Ultimate torque thread?

[Joe-JDC]

I would aim for something in the 210-215 range at .050".  With that low duration you can go tight center without adding a ton of overlap.  I would do a 107-108 LSA.  Need a lazy lobe to help with the cylinder pressure and depending on the valve job, prob around .550" lift.

On the EMC entry of Kaase, the camshaft was in the 184ish degree for low end torque for the dyno pulls.  It was weird to listen to how he had different cam lobes cut for different lifts, different base circle all on the same camshaft. He had custom machined, lengthened lifters all on the same camshaft just to clear the 4.250" stroke in a block that normally cannot accept more than a 3.9" stroke without a girdle/spacer.  The reversion in the exhaust ports and intake ports was terrible, but it made torque at low rpm, and peaked just over 5400 rpm.  On top of all the rules, the fuel requirement was also a player in the competition.   Joe-JDC

[Barry_R]

Kaase "ain't right" when it comes to creativity.
Nobody else comes close..

[FE Jonny]

Hate diesels, we got three and not going there. I am looking at specs for truck towing EFI roller cams and think if I get a custom grind for more cubes I'll get what I am looking for. Also playing with the cam timing will give me more grunt. I do have the advantage of a low geared trans in first.

[Drew Pojedinec]

Diesels are my bread and butter so can't complain about them.  I find them very boring on a whole, but they certainly serve a purpose.
I meant moreso, it seems like you bought a lot of cool parts, and are now trying to make them fit together with a camshaft that will have to make sacrifices to work.

But I'm certainly no expert on the whole thing.  I'll be interested to see how your "no detonation" thing pans out.

Best of luck, please keep us all posted on how it works out.

[FE Jonny]

I did spend a lot, I was going to use the engine for high RPM HP. I had to clean house and sold my Comet, two Jeeps, my 68 Ranger Pickup, a Ranger mini that I ended up putting a 402 cube Cleavor in with a C6. 6 farm tractors and a bunch of implements. I sold a lot of stuff from a previous estimate marriage like furniture and tools. I gave my collection of Power King tractors to my nephew that consists of a 52 foot semi trailer of stuff. Now I have my 83 Jeep Cj7 and a 91 Bronco left. I really wanted to use my FE for something so I decided to keep it and put it in my Bronco. I think if I can get the cam and tuning right it could be a good engine for it. The heads are not overly modified, I was going to do a 325 CFM port but never got that far so they will still work. The intake adaptor is still in the box untouched as is the lower Trick flow intake. The only part that will hurt me at this point is the cam, I also have a set of Jays water pump adapters and the water pump to go with it. A plastic fuel cell to go with E85, regulator, fuel pump and Ford fuel sender to work with my gauge. I have a 90mm Wilson throttle body, EGR spacer that needs to be bored and sleeved but have the sleeve, Fiveology mass air flow kit with Moeat's Quarterhorse and Jaybird. Also have a Moroso road race pan, windage diamond scraper and baffle kit. Forged crank, H beam rods, a set of Barry's forged coated 10:1 pistons and T&D race rockers. I have all the gaskets including Cometic steel .027 multi layer gaskets, roller lifters, a double roller timing chain and ati three ring damper. I guess I may as well use it if I got it.

[TomP]

The 3.70 is nowhere near enough gear! Not for 33" or bigger tires and really those tires should be bigger yet.

I ran 4.88's with a 39" tire on my Bronco and it's highway cruise RPM was way under 3000. You must want to drive really fast.

I would use tires more like 37" and gears more like 4.56.

I didn't think the T19 had a 6 to 1 gear? I have the 4.0 first diesel mid 80's Ford T19 in my ramp truck and I think the gas engine ones were 5. - something.

[FE Jonny]

I had the trans built up with an international gear cluster @ 6.5:1, they actually lad a 7.1:1 in the Fords. I have a 68 Ranger trans with that gear. Maybe I will go with a 4:00, I run my calculations again? I used the Summit ratio calculator and came up with 3000 RPM @ 78 MPH on a 33 tire. I could go 4.00 and that gets me to 70 which is highway cruising speed around here. Some places are 75 up north but most people drive 80 in general. Around here if you drive under 70 the semi trucks run you off the road and people drive past giving you the one finger solute so you had better stay off the highway under 75.

[NIsaacs]

You are confusing me, you mention the T19 in your truck has 6.0/6.5/or 6.7 ratio, what is it? Per Novak's web site, the lowest T19 1st gear is 6.32. The NP435 has 6.68 1st with the older SM420 (GM) having the lowest 1st of all the common pickup trannys at 7.05.

30 mpg with an FE in a pickup truck? Is that a typo?

Nick

[plovett]

I look at torque as the product of displacement, volumetric efficiency (at the rpm you want), and compression ratio.  That's pretty much the same as has already been said.

Only thing I might add is this sounds like a good engine to use aggressive cam lobes.  Two reasons for that.

One is that you want low duration to keep the power band at low rpm, but you'll want a lot of area under the curve to maximize the volumetric efficiency (and torque).

Second, since this is to be a lower rpm engine, it will be easier to control the valvetrain with aggressive cam lobes, without using crazy spring pressure.

JMO,

paulie

edit:  This is predicated on the use of E85 and no detonation issues.

[FE Jonny]

Thanks for all the input, it has given me a lot of stuff to mull over. I definetly agree that the 3:70 should probably go and maybe something I the range of 4:00 is more in line. The first gear cluster I can't remember exactly what he put in there but it was the gas IH low range gearing use in the large trucks, I want to say about 6:50 or so.I'll have to find the receipt but it in the higher 6:00s as I recall. My main concern is what I end up with in 1:1 as I need to make a driver out of it and do not want to have it running 5000 RPM at 75 MPH. Night wise I am going with 4" of lift to keep a stable platform riding on 33/12.50 tires. I have just been throwing ideas out there just to get some feed back on some of you who have had experience with trial and error and found what works and what doesn't. I may later add a gear vendor between the t19 and the transfer case which would effectively not change the overall drivetrain length as I have a pretty big adaptor on there nor as it is that is a factory part. I am also not going to do the E85 right away as it would require more modifications and machine work I do not have the funds for now.

[Qikbbstang]

Re: Drew's "Seems like a compromise engine.......
*cough* get a diesel *coughcough*

How about *Psst*, *Psst*, *Psst* never forget Jay Leno when he was going over his Stanley Steamer stated a steam engine produces Maximum Torque at Zero RPM. He mentioned you had to be gentle on the steam valve to avoid spinning the rims in the tires. Kind of neat when you think about the steam pressure from an external source displaces the piston..........vs internal combustion