IM Thinking about a 800+HP LT1 turbo build
09-26-2010, 02:24 PM
#102
Heads should be ported. Boost is boost, nothing more than a measure of restriction. Turbos just get their power from a different source, yet deliver it to the same place. The more headflow you have, the more power you will make whether it means NA, turbo, SC, nitrous. You might make 600rwhp @12psi on stock heads, but make the same power on ported heads @9psi. More cfm means more power PERIOD. SC or turbo, it makes no difference what-so-ever. Exhaust is just as critical on a turbo car also. Just because it has backpressure, that doesn't mean its not moving really fast, its just pressurized. Same concept yet again, more flow, the more it will support. Exhaust makes a difference in how fast it spools also, hence why my intake duration is 212 and exhaust is 226. Good luck getting 800rwhp out of stock heads without running a ton of boost. I think I'll get some ported AFRs and crack off 800rwhp at about half the boost it would take to make stock un-ported castings. Not to mention the down low out of boost power you'll get. That 88mm Garrett doesn't hit even 1psi until 4200rpm.
Silas, I tihnk this is the first time I'm going to disagree with you, that's on the ported head thing. They most definitely should be ported. Boost = restriction. Ported heads = lower "seen" boost but more air movement which = more power and easier on the motor because you're not trying to force the air in as hard.
09-26-2010, 02:28 PM
#103
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8.9cr, built 383, BBK headers, 2.5" merge pipes, dual 40mm JGS WGs, Garrett GT-88, 4" downpipe out the fender/nose, Motron 80lb injectors, Devils Own Alky/meth, 24x12x4" IC, Tial BOV, 58mm TB, etc. She's been a fun one
09-26-2010, 02:30 PM
#104
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Under any other given circumstance I'd agree w/ everything posted above. But I know a guy w/ a TPI Vette w/ only a forged crank, IRON heads untouched, a baby cam in 210 range w/ a 2.56 gear bust a 115mph on a 1/8the mile track all day long...oh turbo is a 76mm and 14psi. The guy is legendary around these parts and builds turbo cars like nobody's business and is quick to say leave the heads alone.
09-26-2010, 02:32 PM
#105
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09-26-2010, 02:39 PM
#107
So you've started with a stock car, added nitrous and are running what these guys are? Doesn't sound like your story to me. You're leaving out everything you've already done and comparing one single part of your build to their ENTIRE build.
09-26-2010, 02:41 PM
#108
As a comparison, what kind of power is Tony Sheppard putting down compared to them, and how much has he invested. I'd say that's a comparison. You're car isn't even close to their league.
09-26-2010, 03:52 PM
#109
They are talking about a turbo set up not a chassis set up. Id have to rebuild the entire motor and get all the Turbo parts, fuel system, tune etc. It would cost a **** ton to convert.
BTW Im about 600+hp on spray(200shot) so Im not that far off the 800hp goal the OP has and Ive put about 20k into the car already. Just about EVERY SINGLE PART has been changed in my car.
BTW Im about 600+hp on spray(200shot) so Im not that far off the 800hp goal the OP has and Ive put about 20k into the car already. Just about EVERY SINGLE PART has been changed in my car.
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09-26-2010, 04:26 PM
#111
They are talking about a turbo set up not a chassis set up. Id have to rebuild the entire motor and get all the Turbo parts, fuel system, tune etc. It would cost a **** ton to convert.
BTW Im about 600+hp on spray(200shot) so Im not that far off the 800hp goal the OP has and Ive put about 20k into the car already. Just about EVERY SINGLE PART has been changed in my car.
BTW Im about 600+hp on spray(200shot) so Im not that far off the 800hp goal the OP has and Ive put about 20k into the car already. Just about EVERY SINGLE PART has been changed in my car.
09-26-2010, 04:48 PM
#112
09-26-2010, 05:27 PM
#113
LSWHO what are you even talking about??? Im not trying to make a compairison. Im saying it would cost big bucks to convert, more bucks than I have to spend. So Ill stay with spray.
SD24 I know 600 isnt 800 but could be a $500 DP set up away. Not a full FI rebuild away.
SD24 I know 600 isnt 800 but could be a $500 DP set up away. Not a full FI rebuild away.
09-26-2010, 10:08 PM
#115
I dont see why not. Chassis is pretty much done, I have a built th350 and the only part of my engine Id worry about in the factory rods which do have arp hardware so It might last a while it might not. In the mean time i have a nice 4bolt block and cola crank that just need some pistons and rods. Vtechs car seems to do fine on a factory shortblock
Also if I remember right my car has gone quicker than yours has ever, and has every single time out, until I changed it.
If your referring to my 12sec pass at the shootout(which by the way you werent there) anyone who knows **** about cars knows my car is not set up to run NA at the moment and I had a bad day driving the first time out with the new set up.
Also if I remember right my car has gone quicker than yours has ever, and has every single time out, until I changed it.
If your referring to my 12sec pass at the shootout(which by the way you werent there) anyone who knows **** about cars knows my car is not set up to run NA at the moment and I had a bad day driving the first time out with the new set up.
09-27-2010, 05:31 PM
#116
This is what I'm talking about:
Now you say:
That's nothing like what you said... at all.
You made a comment about how cheap nitrous is, yet you are not in the same league as their turbo car. When at their power level it's all preference. The builds are going to be very similar in costs, not as you said.
Now you say:
You made a comment about how cheap nitrous is, yet you are not in the same league as their turbo car. When at their power level it's all preference. The builds are going to be very similar in costs, not as you said.
Last edited by LSWHO; 09-27-2010 at 05:36 PM.
09-27-2010, 05:34 PM
#117
Isn't the general rule that you can spray about half the power you make NA?
You're telling everybody here that you want to spray enough to DOUBLE your power and you think it's safe?
You're telling everybody here that you want to spray enough to DOUBLE your power and you think it's safe?
09-27-2010, 05:46 PM
#120
A junkyard build can keep up with your car. (fyi a junkyard turbo build is cheaper than your build)