500+ Rwhp
#16
Re: 500+ Rwhp
Thank you. The only thing stopping it from being a true street car is the compression. Another member built a motor similar to this with about 10.5-1 and it makes the same power with the same heads although his heads are worked quite a bit more than mine. In terms of idle quality and driveability, I would put this up against many of the motors guys have in "street cars".
I think that 450-480 rwhp mark is about it for n/a LTx based motors on a budget. The head flow just ins't there without going big bucks.
I think that 450-480 rwhp mark is about it for n/a LTx based motors on a budget. The head flow just ins't there without going big bucks.
#18
Re: 500+ Rwhp
Originally Posted by amean94ta
well i am gonna try to do good.
solid roller this year.
next year hogan/dfi/afr's
but i am also gonna use n20 so im kinda cheating but i wonder whats the most power made from a lt1 block?
solid roller this year.
next year hogan/dfi/afr's
but i am also gonna use n20 so im kinda cheating but i wonder whats the most power made from a lt1 block?
What did you run on last years combo?
#20
Re: 500+ Rwhp
Originally Posted by fireman
What kinda flow can you get out of ported Trickflows?
#21
Re: 500+ Rwhp
I know I will not make 500rwhp, but we will se what ye old trickflows can do. Building a fully forged 383 (4340 crank, 6" H-beams, -5cc srp flat tops) with Lloyd ported trickflows, and the matching cam. We will just have to see the end of this month what it puts down with the cutouts open.
#23
Re: 500+ Rwhp
Originally Posted by aggiez28
i have a motor for sale that will put down 550 na
396 with pro action heads and a super victor. nice solid roller setup too
if anyones interested email me
brook
396 with pro action heads and a super victor. nice solid roller setup too
if anyones interested email me
brook
Originally Posted by racerdude
On a 383 ya need a set of heads that flow in excess of 330CFM. An intake that looses no more than 3% of that flow. The compression and mech roller cam and a good intake tract.
Bret
#25
Re: 500+ Rwhp
Yeah it's alot easier to make 500+rwhp with a blower, trubo or n2o. I would say that around 450-470rwhp is the limit before getting redicuosly expensive and radical for a steetcar with a LTX based engine. But there are a couple people who have done 450rwhp inexpensively. Steve(Sar2k) built his stock bottomend LT1 with ported LT1 heads/intake and made 450rwhp thru a 4l60e which was very impressive and Gary's streetcar did 452rwhp (M6) with Joe O's AFR head/cam package with a 355" LT1. My car should make upwards of 450rwhp N/A and my setup is far from exotic or really expensive. Later Clint
#26
Re: 500+ Rwhp
Originally Posted by SStrokerAce
Dam old guy, you don't need 330cfm to make 600hp even with a small cam. That's a really inefficent use of all that airflow to only get 600hp. 290cfm and a well matched setup can do it easy. 330cfm should make 660hp easy.
Bret
Bret
330 CFM from a "happy bench"--- minus 10% for a GOOD intake(most don't have those) minus another 3% for a screwed up CAI now ya have*drum roll please*287CFM that leaves ya in the 590FWHP range=531 to the tire with a M6. As I understood the original post it was 500+RWHP.
Besides I like to do it the easy way.
Last edited by 1racerdude; 02-08-2006 at 10:46 AM.
#27
Re: 500+ Rwhp
why is it so easy for an ls1?
theres a local guy running a 408 with a hydrolic cam, head that flow less then 300 cfm and he's pushing 530
i know he has more ci, but his last combo 382 was still in the 500s
guess theres more then flow numbers.
theres a local guy running a 408 with a hydrolic cam, head that flow less then 300 cfm and he's pushing 530
i know he has more ci, but his last combo 382 was still in the 500s
guess theres more then flow numbers.
#28
Re: 500+ Rwhp
Originally Posted by blkchevyz
why is it so easy for an ls1?
theres a local guy running a 408 with a hydrolic cam, head that flow less then 300 cfm and he's pushing 530
i know he has more ci, but his last combo 382 was still in the 500s
guess theres more then flow numbers.
theres a local guy running a 408 with a hydrolic cam, head that flow less then 300 cfm and he's pushing 530
i know he has more ci, but his last combo 382 was still in the 500s
guess theres more then flow numbers.
#29
Re: 500+ Rwhp
Yeah LS motors have a intake that helps a ton, not like the LT intake. Why do you think I build single plane intakes for these things?
Larry, I dont have a happy bench so I guess thats where I'm coming from. I've seen motors with less than 270cfm make 600hp.... just depends how efficient the package is.
Bret
Larry, I dont have a happy bench so I guess thats where I'm coming from. I've seen motors with less than 270cfm make 600hp.... just depends how efficient the package is.
Bret
#30
Re: 500+ Rwhp
Originally Posted by SStrokerAce
Yeah LS motors have a intake that helps a ton, not like the LT intake. Why do you think I build single plane intakes for these things?
Bret
Bret
when does the lt1 intake become a restriction?