I need advice on my next setup..
Thread Starter
Joined: Nov 2001
Posts: 8,259
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From: Valrico, Florida
Re: I need advice on my next setup.. Maybe I am going about this all wrong.. Instead of looking at a horsepower #.. Maybe I should be looking at a setup that would beat a crazy powered Single Turbo car from 30mph to 160mph.. Thats a 130mph sprint.. With that in mind guys. What would do it..? I want specifics.. Like gearing, engine, supercharger or turbo.. My current setup at 3800lbs beats Supras that dyno between 450rwhp to 500rwhp from a dead dig to 120mph on the street. Even from a 30mph roll I can hold them off to 130mph.. If I did not have 4.10's that would not be possible.. With this new information.. Shoot..
Re: I need advice on my next setup..
Yes, if you fall short you could always do a 50-100 shot as well for highway supra races.
TECH Addict
Joined: Jun 2002
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Re: I need advice on my next setup.. vince going on what I have done and on what chris said, I would keep the set up that you have and boost it. There is alot that you can do and not have to go with nitrous at the same time. With my 3.55 gears i would run a lot of people from 30-130. My buddy's supra made 680 and he went 133 mph in the 1/4. I think boosting is the way to go with the short block you have but get the heads done to lower the compression. Also if you plan on making power up near myself or harlan you will have to look at a programming issue. I went with FAST, there are other options but I think that FAST might be the best way to go. Have you thought about all of the other things you will have to do to go with your new set up?
Thread Starter
Joined: Nov 2001
Posts: 8,259
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From: Valrico, Florida
Re: I need advice on my next setup.. Scott I have thought about a lot of stuff.. The thing is I am going to let Futral Motorsports build it. The question is should I go 397ci or keep my current shortblock and drop the compression.. I want to go turbo, but some say I should go supercharger for the ease of tuning and it is all you need for the type of racing I do.. I want MPH..
TECH Senior Member
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Re: I need advice on my next setup.. Vince,
If your target is 800RWHP or under I think the block you have now with a good rod will be fine.
A D1SC "should" be enough blower for you but you may want to consider a F1.
With the right intercooler/aftercooler or water/alky injection, blower ported heads, headstuds, and good gaskets you should be able to run 20#'s on 110unleaded.
(~12#'s on 94 octane)
That should give you 9's@140-145mph in the 1/4 with a good trans and decent raceweight.
You need to take a ride in a car that does 140-150mph in the 1/4. It is absolutely crazy
If your target is 800RWHP or under I think the block you have now with a good rod will be fine.
A D1SC "should" be enough blower for you but you may want to consider a F1.
With the right intercooler/aftercooler or water/alky injection, blower ported heads, headstuds, and good gaskets you should be able to run 20#'s on 110unleaded.
(~12#'s on 94 octane)
That should give you 9's@140-145mph in the 1/4 with a good trans and decent raceweight.
You need to take a ride in a car that does 140-150mph in the 1/4. It is absolutely crazy
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SSU Moderator
Joined: Nov 2001
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From: Austin, TX
Re: I need advice on my next setup.. you're all crazy. you won't hit the power you want with that PCM or MAF. talk to scott, he knows. A turbo would be better (hypothetically) but tuning is more of a concern here, and I don't think the 76 will get you where you want if you are trying to lay down big hp supra's. id say stick with 346 for the simple fact that its cheaper, you can far exceed the PCM with those cubic inches, much less a 397. and i vote supercharger, again because it will be cheaper and easier to tune.
TECH Senior Member
Joined: Nov 2001
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Re: I need advice on my next setup.. He is asking about engine combo not PCM/tuning
If he is shooting for 750-800RWHP then of course he'll need fully custom fuel system, FAST or some other management.
He can run about 600RWHP no problem with the factory PCM and 50# injectors with LS1 edit. Have to scale the MAF and watching fueling past Maxed MAF reading carefully but it can be done
Cheers,
Chris
ps- I agree a blower would be easier to tune.
Big front mount intercooler, water/alky setup and a D1SC or F1 ATI blower would work very well
If he is shooting for 750-800RWHP then of course he'll need fully custom fuel system, FAST or some other management.
He can run about 600RWHP no problem with the factory PCM and 50# injectors with LS1 edit. Have to scale the MAF and watching fueling past Maxed MAF reading carefully but it can be done
Cheers,
Chris
ps- I agree a blower would be easier to tune.
Big front mount intercooler, water/alky setup and a D1SC or F1 ATI blower would work very well
TECH Addict
Joined: Jun 2002
Posts: 2,920
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Re: I need advice on my next setup.. like I was saying stay with the 346. Im running conservative timing and tune right now till I get the front mount and I am making big power through a non lock up t400. what kind of tranny are you going to run because if its a t56 then my set up with make about 700-750 through a t56. and im only runnng 15 psi.
wow i cant wait for the innercooler so I can run 22 psi..lol
wow i cant wait for the innercooler so I can run 22 psi..lol
Thread Starter
Joined: Nov 2001
Posts: 8,259
Likes: 4
From: Valrico, Florida
Re: I need advice on my next setup.. Scott I am running through a T56. What compression are you running again. I know you told me, but I want to make sure.. Also how much timing and I am curious of what lsa you are running on your cam.. I have 114 lsa on my current cam and I was thinking of keeping it if I stay with the 346ci.. How much is the fast system?
Thread Starter
Joined: Nov 2001
Posts: 8,259
Likes: 4
From: Valrico, Florida
Re: I need advice on my next setup.. One thing I have decided is to go TURBO.. I will stay with my shortblock, but I will go with better rods.. Now I just have to decide whether to go big single or twins..
SSU Moderator
Joined: Nov 2001
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From: Austin, TX
Re: I need advice on my next setup.. its not the size of the 76 that bothers me, i don't recall seeing but like 1 or 2 cars that run super good with them. rob is using the PTE74 w/ a q-trim (.81AR??) housing for a reason, that would probably be your best bet. learn some about water/alky injection and forget in intercooler, it will be easier to plumb and route w/o it.
Re: I need advice on my next setup..
its not the size of the 76 that bothers me, i don't recall seeing but like 1 or 2 cars that run super good with them. rob is using the PTE74 w/ a q-trim (.81AR??) housing for a reason, that would probably be your best bet. learn some about water/alky injection and forget in intercooler, it will be easier to plumb and route w/o it.
http://www.ls1motorsports.com/Project-Camaro.asp
Even though Rob's single turbo was super-bad and very well sorted, he still 'only' dyno'd 707rwhp and went 136mph in the 1/4.
Don't get me wrong, I am far from putting down that beast, but if I'm right you want performance that is a notch above that, right?
Re: I need advice on my next setup.. I vote for keeping the shortblock you have... Sounds like you have stock compression JE flattops.
If you are 10.7:1 now with 5.7 heads, I am guessing they are milled .050 - .060.
So you are at like a 62cc chamber. A 6.0 head is ~70cc stock so 9.5:1 is attainable with more bowl work.
I'd also go to a 3.55 gear if you like to run from a roll.
I'm guessing your 397ci would be a big bore motor, I bet it would be hard to hook and believe me you don't want more low end if you race on radials.
I'd like to see more folks build 346ci - 348ci FI motors I think we can do a lot with these motors, the mod 4.6 stangers are running 8's and 9's and they also have a 3.900 bore.
If you are 10.7:1 now with 5.7 heads, I am guessing they are milled .050 - .060.
So you are at like a 62cc chamber. A 6.0 head is ~70cc stock so 9.5:1 is attainable with more bowl work.
I'd also go to a 3.55 gear if you like to run from a roll.
I'm guessing your 397ci would be a big bore motor, I bet it would be hard to hook and believe me you don't want more low end if you race on radials.
I'd like to see more folks build 346ci - 348ci FI motors I think we can do a lot with these motors, the mod 4.6 stangers are running 8's and 9's and they also have a 3.900 bore.
On The Tree
Joined: Dec 2001
Posts: 167
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From: FFX, VA
Re: I need advice on my next setup.. My vote is for keeping the current block. Mostly for Johns reasoning, which is also one of the reasons I'm doing mine that way. Or if your looking for something even more different than the rest of the crowd you could try one of the TSP offset strokers 