FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: plovett on November 13, 2020, 12:42:01 PM
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What's a good 600 hp solid roller street cam? ~450 cubes, 315-320 cfm heads, just under 11:1 compression, 400+ cfm intake manifold. 2" headers. "Enough" gear and stall. 7000 or less rpm. Bushed lifters.
I don't want huge spring pressures, even with bushed lifters. I will give up some hp for street use and longevity.
thanks,
pl
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My humble opinion, there is no cam currently sitting on the shelf for your needs. Have one of the gentleman of this forum get one custom ground to your needs. It could make way more difference than you imagine.
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There are plenty of "on the shelf" cams that can make over 600 hp. Still, a custom grind is almost a given. There is no downside. So your point is well taken. However, I am looking for rough numbers.
I am thinking 250-254 degrees on the intake with .650-.675" gross lift, on a 108 to 110 LSA. ~8 degrees more duration exhaust. Just a ball park guess.
Anybody have any combos they could share?
thanks,
pl
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Lunati part number 16463. Is just about what you described.
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I meant to say Crower
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Comp has one that’s 262 262 .670 .670. I have one on the shelf but never used it. Pretty sure Jay made 650hp with it in one of his 500” edelbrock headed engines. So I bet it would get you there.
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I'm using a Custom Comp 254/260 695 lift 110 LSA solid roller in my street 465. Barry spec'd it for me a while back when he built the short block. 11:1 CR flat tops, Blairs street pro-ports. It's a little rowdy, but pulls strong up close to 7K, idles around 1k.
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252193-08 Howards
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Plovett I have the first solid roller we used when Brent and I were doing a few Tunnel Port builds. It was 465 cubes and made 600hp
with unported heads. There is one dyno session on the cam and springs
It's a Bullet custom solid roller Duration @50 Intake 260 Exh 270, Gross lift Intake 616, Exh 660 ICL 104
I also have the springs we used and if I recall they were around 630-640 open pressure.
If it's something you could use send me a pm.
This needs a new home.
garyv
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Thanks guys! Keep it coming. I am digesting this so far............
paulie
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I would suggest calling Blair and getting the cam he used in the '19 EMC. With that, he got 600 hp from less than 400 ci and his heads flow is similar to yours.
I don't know the cam specs of that cam but, I don't think it was much more than .600 on the lift and still in the 240's @ .050 for the intake lobe.
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Lunati part number 16463. Is just about what you described.
Yes, I think that is close. I already have a Crane 246/254, .637"/.658" 108LSA cam, but I think it is a little too small for the goal.
thanks,
pl
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I'm using a Custom Comp 254/260 695 lift 110 LSA solid roller in my street 465. Barry spec'd it for me a while back when he built the short block. 11:1 CR flat tops, Blairs street pro-ports. It's a little rowdy, but pulls strong up close to 7K, idles around 1k.
That sounds good. How did you decide on a 110 LSA? Does it need idle quality? Just wondering. What do you think you are making hp wise? Run okay on high octane pump gas?
thanks,
pl
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252193-08 Howards
That looks like it is in the ball park of what I am looking for.
Lift: .656 / .656, Duration @ .050: 249 / 255, Centerline: 104, Rough idle, Pro street/bracket, Good mid-range torque, 11.0:1+ compression & 3500+ stall converter.
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Plovett I have the first solid roller we used when Brent and I were doing a few Tunnel Port builds. It was 465 cubes and made 600hp
with unported heads. There is one dyno session on the cam and springs
It's a Bullet custom solid roller Duration @50 Intake 260 Exh 270, Gross lift Intake 616, Exh 660 ICL 104
I also have the springs we used and if I recall they were around 630-640 open pressure.
If it's something you could use send me a pm.
This needs a new home.
garyv
I dunno Gary,
That looks pretty dang big for my application. Do you remember the rpm the peaks occurred at?
thanks,
pl
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I would suggest calling Blair and getting the cam he used in the '19 EMC. With that, he got 600 hp from less than 400 ci and his heads flow is similar to yours.
I don't know the cam specs of that cam but, I don't think it was much more than .600 on the lift and still in the 240's @ .050 for the intake lobe.
Blair doesn't post on here much anymore, for some reason. Plus, I think any EMC cam would be too aggressive for my street engine.
thanks,
pl
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Don’t disrupt Blair right now. He’s helping me twist my Fairlane in half. :)
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Comp has one that’s 262 262 .670 .670. I have one on the shelf but never used it. Pretty sure Jay made 650hp with it in one of his 500” edelbrock headed engines. So I bet it would get you there.
I am not sure what to think about that one. VERY gentle lobes, even though I said that is one of things I want. I do want to take advantage of the roller lifter to gain some area under the curve. That one may be too gentle. I am not sure. Then, so much duration @ 0.050". I dunno. Just thinking.
thanks,
pl
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Don’t disrupt Blair right now. He’s helping me twist my Fairlane in half. :)
WILCO on that. :)
pl
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Give him a call. He's VERY easy to talk to, and when I called him, recently, about doing a EMC port job, he took a long time talking to me and wasn't in any hurry to end the conversion until, someone came in he needed to talk to.
It seems like his EMC cam was pretty mild, I thought for what he got out of it. I think it was a HRC with solid lifters?
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Give him a call. He's VERY easy to talk to, and when I called him, recently, about doing a EMC port job, he took a long time talking to me and wasn't in any hurry to end the conversion until, someone came in he needed to talk to.
It seems like his EMC cam was pretty mild, I thought for what he got out of it. I think it was a HRC with solid lifters?
What is "mild"? It doesn't necessarily mean easy on the valvetrain. It could mean that, or it could mean low duration. It could mean anything. I am not looking for a hydraulic roller anyway. What is a good 600 hp pump gas street solid roller?
thanks,
pl
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I ran a Comp 308R on the street for a while before I built my blown motor. My Mustang ran high 10's with it and had no troubles driving in traffic or highway. I was running a 454 incher with ported Edelbrock heads.
I didn't run super high spring pressure, 200 seat and a little over 500 open. It pulled to 6500 fine.
The K-Motion 1100 spring works well with the 308R. I ran the regular Comp non-oiling roller lifter. The Comp roller lifters now have pin oiling and are a lot cheaper than the Crower hippo lifters...but I'm sure the Crower lifter is an outstanding piece.
My advise if you're going to run a solid roller on the street. Keep an eye on the springs. When they "go away" things bust. New springs every winter, new lifters every third year.
BTW, the 308R is .675 gross lift, 260@.050 duration on 110 lobe separation. A very old school mild ramp roller that's easy on parts.
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I ran a Comp 308R on the street for a while before I built my blown motor. My Mustang ran high 10's with it and had no troubles driving in traffic or highway. I was running a 454 incher with ported Edelbrock heads.
I didn't run super high spring pressure, 200 seat and a little over 500 open. It pulled to 6500 fine.
The K-Motion 1100 spring works well with the 308R. I ran the regular Comp non-oiling roller lifter. The Comp roller lifters now have pin oiling and are a lot cheaper than the Crower hippo lifters...but I'm sure the Crower lifter is an outstanding piece.
My advise if you're going to run a solid roller on the street. Keep an eye on the springs. When they "go away" things bust. New springs every winter, new lifters every third year.
BTW, the 308R is .675 gross lift, 260@.050 duration on 110 lobe separation. A very old school mild ramp roller that's easy on parts.
Thanks Tommy!
I have Morel bushed lifters, but I still don't want a lot of spring pressure. I am thinking of using spring pressures similar to what you mentioned. I know it won't be a no maintenance beast, but a relatively low maintenance beast would be nice. I expect to give up 20-30+ hp compared to a more modern aggressive lobe. I'd still like to breach 600 hp. I figure a less aggressive lobe will hurt more in the low-mid range rpm, but also some at high rpm. I am not sure about that, but that is what I think.
Thanks,
pl
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plovett,
It actually made 605hp588tq. 600hp @ 6400 rpms and 605@6900 rpms Peak tq @4700 rpms.
If this won't work give Brent a call and he can spec you something out.
I have another SR cam but it's a tad more radical ;D
garyv
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I'm using a Custom Comp 254/260 695 lift 110 LSA solid roller in my street 465. Barry spec'd it for me a while back when he built the short block. 11:1 CR flat tops, Blairs street pro-ports. It's a little rowdy, but pulls strong up close to 7K, idles around 1k.
That sounds good. How did you decide on a 110 LSA? Does it need idle quality? Just wondering. What do you think you are making hp wise? Run okay on high octane pump gas?
thanks,
pl
Barry did the details of the cam. Runs on pump 91 all day, went 11.41 with full exhaust and street tires. Pulled 15mpg on a road trip (with the benefit of a TKO O/D)
https://youtu.be/DpB73U7_kzg
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I'm using a Custom Comp 254/260 695 lift 110 LSA solid roller in my street 465. Barry spec'd it for me a while back when he built the short block. 11:1 CR flat tops, Blairs street pro-ports. It's a little rowdy, but pulls strong up close to 7K, idles around 1k.
That sounds good. How did you decide on a 110 LSA? Does it need idle quality? Just wondering. What do you think you are making hp wise? Run okay on high octane pump gas?
thanks,
pl
Barry did the details of the cam. Runs on pump 91 all day, went 11.41 with full exhaust and street tires. Pulled 15mpg on a road trip (with the benefit of a TKO O/D)
https://youtu.be/DpB73U7_kzg
That cam is a Comp XR292R.
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Maybe consider Blairs baby solid roller. My 416ci motor made 600hp with it. With the rocker I was using it only had .525 intake lift and .500 exhaust lift. duration is something like 265/270 @.050. My open spring pressure is 550lbs. It is a tight lash cam and would be streetable in a larger ci motor. Jim
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I'm using a Custom Comp 254/260 695 lift 110 LSA solid roller in my street 465. Barry spec'd it for me a while back when he built the short block. 11:1 CR flat tops, Blairs street pro-ports. It's a little rowdy, but pulls strong up close to 7K, idles around 1k.
That sounds good. How did you decide on a 110 LSA? Does it need idle quality? Just wondering. What do you think you are making hp wise? Run okay on high octane pump gas?
thanks,
pl
Barry did the details of the cam. Runs on pump 91 all day, went 11.41 with full exhaust and street tires. Pulled 15mpg on a road trip (with the benefit of a TKO O/D)
https://youtu.be/DpB73U7_kzg
That cam is a Comp XR292R.
Thanks David and Brent. Do you know how much spring pressure you are using with that one, David?
I don't think I will ever get 15 mpg with my C6. :)
pl
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plovett,
It actually made 605hp588tq. 600hp @ 6400 rpms and 605@6900 rpms Peak tq @4700 rpms.
If this won't work give Brent a call and he can spec you something out.
I have another SR cam but it's a tad more radical ;D
garyv
That sounds like an interesting cam. I think it is a little big for my combination. Plus, I am guessing Brent spec'd it specifically for the Tunnel Port heads. I think they flow great, but taper off at higher lifts? Super cool heads, but different flow characteristics than a typical "medium riser" type FE head.
thanks,
pl
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Maybe consider Blairs baby solid roller. My 416ci motor made 600hp with it. With the rocker I was using it only had .525 intake lift and .500 exhaust lift. duration is something like 265/270 @.050. My open spring pressure is 550lbs. It is a tight lash cam and would be streetable in a larger ci motor. Jim
Was that for a specific class or something? No way would I run that low of a lift unless I had to. Sounds like it made some power, though. Interesting.
thanks,
pl
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That cam is a Comp XR292R.
It is "now"..
Did not have a marketing name back when Chris P and I were working up a list of them back several years ago. Remains a pretty nice street racer stick.
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I ran a Comp 308R on the street for a while before I built my blown motor. My Mustang ran high 10's with it and had no troubles driving in traffic or highway. I was running a 454 incher with ported Edelbrock heads.
I didn't run super high spring pressure, 200 seat and a little over 500 open. It pulled to 6500 fine.
The K-Motion 1100 spring works well with the 308R. I ran the regular Comp non-oiling roller lifter. The Comp roller lifters now have pin oiling and are a lot cheaper than the Crower hippo lifters...but I'm sure the Crower lifter is an outstanding piece.
My advise if you're going to run a solid roller on the street. Keep an eye on the springs. When they "go away" things bust. New springs every winter, new lifters every third year.
BTW, the 308R is .675 gross lift, 260@.050 duration on 110 lobe separation. A very old school mild ramp roller that's easy on parts.
Do you remember the compression ratio you ran with that combo, Tommy?
thanks,
pl
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I'm using a Custom Comp 254/260 695 lift 110 LSA solid roller in my street 465. Barry spec'd it for me a while back when he built the short block. 11:1 CR flat tops, Blairs street pro-ports. It's a little rowdy, but pulls strong up close to 7K, idles around 1k.
That sounds good. How did you decide on a 110 LSA? Does it need idle quality? Just wondering. What do you think you are making hp wise? Run okay on high octane pump gas?
thanks,
pl
Barry did the details of the cam. Runs on pump 91 all day, went 11.41 with full exhaust and street tires. Pulled 15mpg on a road trip (with the benefit of a TKO O/D)
https://youtu.be/DpB73U7_kzg
That cam is a Comp XR292R.
Thanks David and Brent. Do you know how much spring pressure you are using with that one, David?
I don't think I will ever get 15 mpg with my C6. :)
pl
Springs were a NASCAR one-race deal that I found on ebay. I don't recall the numbers, but they aren't crazy big. The Jesel rocker arms on that engine have never complained.
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I have Blairs Pro port heads on my 416. They flow over 300 at 500 lift. They do flow more at 600 lift but not a huge amount so why stress the valvetrain with 600, 650 or 700 lift numbers when there isn't a ton to be gained? It is an aggressive cam profile but the tight lash and low lift allow for less spring pressure which makes sense on a street motor. This motor was making over 500 ft lbs as low as Jays dyno could pull it down (3500 rpm ish). I think this cam in a 450ci motor would be very good on the street. Jim
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I ran a Comp 308R on the street for a while before I built my blown motor. My Mustang ran high 10's with it and had no troubles driving in traffic or highway. I was running a 454 incher with ported Edelbrock heads.
I didn't run super high spring pressure, 200 seat and a little over 500 open. It pulled to 6500 fine.
The K-Motion 1100 spring works well with the 308R. I ran the regular Comp non-oiling roller lifter. The Comp roller lifters now have pin oiling and are a lot cheaper than the Crower hippo lifters...but I'm sure the Crower lifter is an outstanding piece.
My advise if you're going to run a solid roller on the street. Keep an eye on the springs. When they "go away" things bust. New springs every winter, new lifters every third year.
BTW, the 308R is .675 gross lift, 260@.050 duration on 110 lobe separation. A very old school mild ramp roller that's easy on parts.
Do you remember the compression ratio you ran with that combo, Tommy?
thanks,
pl
I was running the old TRW L2298 domed pistons, Le Mans rods, and a 1UB crank. Pretty old school, I think compression was about 12:1. That motor is still on a stand in my garage.
BTW, I coated the tops of the pistons here at home with the Tec-Line do-it-yourself stuff. The slugs still look good on top and none of the coating flaked off. I'm impressed with this product.
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I ran a Comp 308R on the street for a while before I built my blown motor. My Mustang ran high 10's with it and had no troubles driving in traffic or highway. I was running a 454 incher with ported Edelbrock heads.
I didn't run super high spring pressure, 200 seat and a little over 500 open. It pulled to 6500 fine.
The K-Motion 1100 spring works well with the 308R. I ran the regular Comp non-oiling roller lifter. The Comp roller lifters now have pin oiling and are a lot cheaper than the Crower hippo lifters...but I'm sure the Crower lifter is an outstanding piece.
My advise if you're going to run a solid roller on the street. Keep an eye on the springs. When they "go away" things bust. New springs every winter, new lifters every third year.
BTW, the 308R is .675 gross lift, 260@.050 duration on 110 lobe separation. A very old school mild ramp roller that's easy on parts.
Do you remember the compression ratio you ran with that combo, Tommy?
thanks,
pl
I was running the old TRW L2298 domed pistons, Le Mans rods, and a 1UB crank. Pretty old school, I think compression was about 12:1. That motor is still on a stand in my garage.
BTW, I coated the tops of the pistons here at home with the Tec-Line do-it-yourself stuff. The slugs still look good on top and none of the coating flaked off. I'm impressed with this product.
Tommy, do you remember what you were using for fuel with that engine? I won't go to 12:1, but I might try 11:1 on high octane pump gas. I can get 93 octane here, but 91 is much more common.
WILCO on the solid roller spring inspection and replacement. I think with bushed, pressure fed lifters and a fairly mild cam profile, it will last pretty well. I will keep an eye on it, though. Springs are cheap and easy compared to other parts.
thanks,
pl
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For normal cruising I was using 100LL AVgas cut 50/50 with pump premium. If I was expecting an "encounter" or going to the track I'd run straight AVgas. It's available here locally for $5 a gallon and worked well for me.
Nowadays, with the availability of Octainium or Race Gas concentrate a 12:1 street motor is easier than ever. A $20 bottle of juice in 10 or even 15 gallons of pump gas and you're ready to go.
Compression is your friend.
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Thanks Mr T!
I will look into gas "supplements". I do live near an airport.
pl
Mr T. says, "I pity the fool with low octane!"
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n/m
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I really liked the Oregon 175 grind... in the 454 inch stroker deal I did for a truck pull. Ran pretty good in my f100 also. It isn’t a roller but pushed my truck to low 11’s at 118 mph... its 259/267 @0.050 lift was 0.650ish. Iron heads, stock rockers, c8ae-h heads and 428 CJ intake on it lol. My Blair cammed engine is .695 lift roller and has been trouble free so far lol.