Rocker Arms

[james]

Now I know that T&D rocker arms are the best for 482 Fe but which are the second best if you were to choose with the Edelbrock Performer manifold and Edelbrock heads? What about these:  http://www.ebay.com/itm/201954065993?rmvSB=true Or how about these? http://www.ebay.com/itm/Set-Of-FE-Ford-427-Remanufactured-Non-Adjustable-Rocker-Arms-Assembly-/152489360850?hash=item238112fdd2:g:qdIAAOSwuLZY2vJI&vxp=mtr

Or maybe you have another choice? Thanks!

[blykins]

The factory rockers work exceptionally well for mild cams. 

[TJ]

First two pages are informative for your question.  Skip pages three and four. Page five is funny.

http://fepower.net/simplemachinesforum/index.php?topic=4493.15

[Drew Pojedinec]

Mr Lykins has lost a ton of hair since that picture was taken..... He mistakenly bought "Nogaine" instead of "Rogaine."  Although he often pines for lost plumage, the engine community rejoices in the clean, hairless, high quality engines he produces en masse.

[scott foxwell]

First two pages are informative for your question.  Skip pages three and four. Page five is funny.

http://fepower.net/simplemachinesforum/index.php?topic=4493.15

Well THAT was a good laugh.
Does anyone understand proper rocker GEOMETRY because with all this tech talk about rockers, I didn't see it mentioned once.

[blykins]

I don't think there was much tech in that thread other than another forum member trying to take pot shots at me because he couldn't read and interpret the T&D website......

[scott foxwell]

I don't think there was much tech in that thread other than another forum member trying to take pot shots at me because he couldn't read and interpret the T&D website......

I read a bunch of stuff about ratio, fulcrum length, lift, lift in regards to ratio, rocker design, loss of lift, and even a pic of some pretty fancy measuring and mock up...but nothing about geometry. If the geometry isn't right, you can talk about all that other stuff till the day is done; it's pretty much pointless because geometry affects it all.

[blykins]

True, but that thread didn't start out as being an informative post. It started out as being a "which rocker arm" thread. It wasn't until one of the members mis read one of the dimensions on a website and then we had to measure the fulcrum length of some other rocker arms to explain it to him.

I fully agree with you, geometry is extremely important, and even in the post where the member showed some "fancy measuring techniques" his rocker arm adjuster was totally in the wrong spot…which kind of makes the pushrod end look like a conductors baton…

[scott foxwell]

True, but that thread didn't start out as being an informative post. It started out as being a "which rocker arm" thread. It wasn't until one of the members mis read one of the dimensions on a website and then we had to measure the fulcrum length of some other rocker arms to explain it to him.

I fully agree with you, geometry is extremely important, and even in the post where the member showed some "fancy measuring techniques" his rocker arm adjuster was totally in the wrong spot…which kind of makes the pushrod end look like a conductors baton…

Yep. Big pet peeve of mine.
Carry on. 

[james]

The factory rockers work exceptionally well for mild cams.

Thanks for your answer but the problem is I don't have a mild cam. What about the com rockers or do recommend something else? Btw, this thread got out of hand on this geometry business which really didn't address my question?

[blykins]

Ok, what cam do you have? 

[james]

Ok, what cam do you have?

Comp cam 33-247-4 valve lift .640 duration @50 is 260i and 260e Thanks again.

[blykins]

Were you the guy on the other forum with the Falcon?  To be honest, I don't think you'll like that cam if you're gonna run a 3.50 gear. 

I had a customer with a Cobra replica that I built a 482 for.  It had a similar camshaft and the car was a 5-speed with a 3.50 rear gear.  Even at 2400 lbs weight, he wasn't happy with the powerband as it was pretty soggy down low and then just came on hard at the top.  We ended up changing to another solid cam that was about 20 degrees @ .050" smaller and it made the car much more enjoyable for him. 

At the very least, I would consider a custom camshaft.  In applications like this, the engine would benefit from more exhaust duration (6-8°) and to be honest, I would drop the overall duration down and tighten the lobe centers up.  If you're for sure going with a 3.50 gear, that would help the engine be more "helpful" at lower rpms while still sounding mean.

To answer your question though, with the spring pressure you'll need and the lift that the cam has, I'd go with something like a T&D street.  There are other options available of course, but I consider T&D to be one of the best out there.

[MeanGene]

I have two sets of the wide-body Dove HDs with the head stud end stands, probably second best as you put it, I am told they are pretty bulletproof up to about .700, pretty strong setup. One set is new, the other is a nice takeoff I got from Barry. If you're interested, we can talk

[james]

Were you the guy on the other forum with the Falcon?  To be honest, I don't think you'll like that cam if you're gonna run a 3.50 gear. 

I had a customer with a Cobra replica that I built a 482 for.  It had a similar camshaft and the car was a 5-speed with a 3.50 rear gear.  Even at 2400 lbs weight, he wasn't happy with the powerband as it was pretty soggy down low and then just came on hard at the top.  We ended up changing to another solid cam that was about 20 degrees @ .050" smaller and it made the car much more enjoyable for him. 

At the very least, I would consider a custom camshaft.  In applications like this, the engine would benefit from more exhaust duration (6-8°) and to be honest, I would drop the overall duration down and tighten the lobe centers up.  If you're for sure going with a 3.50 gear, that would help the engine be more "helpful" at lower rpms while still sounding mean.

To answer your question though, with the spring pressure you'll need and the lift that the cam has, I'd go with something like a T&D street.  There are other options available of course, but I consider T&D to be one of the best out there.

Yes, I am that guy. So let me ask you this? What if I put say 370 or 373 lower gears in the car? Would that be sort of a happy medium? Secondly, I decided to go with the T&D street rockers and be done with it. Thanks again!