A build of "Atilla's best builds".. I'm starting this build soon... and I wanted to asks for opinions in 1/4 mile time estimation... what do you guys think this torque monster can do with a built T5 (suggest a lighter/better transmission please) and light weight rotary
drivetrain components from pulley to rims on the quarter mile?

The peak numbers are 457 HP and 531 TQ...

Any suggestions on getting to 500HP and 600TQ? That's my goal before considering boost

Here is the power band that Atilla listed

2600 410 203
2800 430 229
3000 475 271
3200 503 306
3400 506 328
3600 514 352
3800 527 381
4000 531 404
4200 524 419
4400 515 431
4600 502 440
4800 487 445
5000 472 449
5200 449 445
5400 432 444
5600 417 445
5800 408 451
6000 400 457
6200 387 457

Obviously the power band has been moved up higher in the RPM Range.
Proper gearing has to be planned in the trans and the rear end

Am I just nuts and dreaming or will this be possible?
Here is a link to Atilla's thread https://www.thirdgen.org/forums/engi...st-builds.html (Look at post 6)

 

I don't think you can push those numbers that much higher, unless you try 14:1 on race gas, then forget adding boost. I note that Atilla specified these qualified as his best builds because they made so much output for their displacements, or some wording to that effect.
Of course you're thinking of a bigger cam, but how is that going to work with the long runners?
Getting an EFI 383 to make 500 / 500 is no challenge if you toss out the TPI.
Just get some good 200 cc heads and have at it.
That new TPI setup from First probably won't add any power to this build, either by itself or with a bigger cam. It probably will hurt torque all the way up to 4000 RPM.
Just my

 

Hmmm I see... I don't think I'll be able to afford race gas. And I rather not use a methanol injection system.. but what do you think something like working the heads for larger valves with a slightly bigger cam would do to the build, I don't want to hurt the torque curve because this is what this build is about...

I know that getting rid of some of the instruments (A/c along with power steering pump and of course the build states the use of an electric water pump. It will free a little power..

I think switching from the twin blade TB to a monoblade that flows hundreds of cfm more will help.


And the boost won't come in a while.. I know dished pistons is a must... and the head chambers to be machined for the adequate compression.. I don't want to go too low either. I live in Albuquerque and we're 5000 in altitude

I like this for build for being stock looking and the torque production has to get a look at.

I did considered the First intake a while ago but I want to stick with TPI

Thank you for your reply

 

My take is AFR's best 180 cc heads, with flat top pistons. And at your elevation, you might actually be best with a slightly smaller TB than specified, since the air is thinner and less dense.
That build may have made 531 ft-lbs corrected to sea level, but corrected to 5000 feet, it's more like 430-440 ft-lbs. Even at 11.5:1, you wont be over 480.

 

Yeah that's being more realistic.. I'm gonna try to get as much torque as possible out of the block. I wonder if a 400 might be cheaper and closer to my torque goals... Balancing everything to the proper level. Consult for the best cam and a good set of lifters.

How do you think the exhaust flow is going to affect the engine's torque curve as I plan to buy the Borla system with a 3inch electric cutout no cat?...

A couple of dyno runs will tell some time next year

 

i recently switched from a ported plenum, ported and siamesed slp runners and ported edelbrock base to a FIRST and the FIRST gave me alot more torque and horsepower in the same rpm range plus allowed me to pull to about 6 grand..... much better system imo....

 

I think the First system is a great option... but in the comparisons and intake system shootouts the large tube runner seems to have the edge (I know they're just mag tests... tests that I will test) but the LTB also moves the power band up if the right components are used without shortening the runners and sacrificing torque for hp production.

I also believe the natural harmonics of the engine are better used with the long tube runners.