500 horses at the rear wheel

[Wildeone]

I am sure this has been discussed, I did a search and didn't see anything, so here it goes. I would like to see 500 horses at the rear wheel of my 87 gn. I will give you my set up and would like opinions as to the most reasonable way to get there. Also, recently I had it dynoed and it made 365 with 470 torque. I think there is more in the combo, but not enough to get to 500.

stock block .030 over bore
stock crank
speed pro pistons
can't remember the specs on the cam, but at the time it was more than what I needed, if vital I can look it up.
good rods (can't remember the name currently).
ta-49
stock intercooler with duttweiler neck
champion irons
champion intake
walbro 340 (hotwired)
3200 stall convertor
50 lbs injectors
red's chips
translator and lt1 maf
power plate
20lbs boost on 94 octane
3" DP
Hooker exhaust system 2'5"
atr headers

I am sure I am missing something, but keep in mind I have limited access to race gas. I know everyone says put some c16 and turn it up, but I don't have access, I can get cam2, but that is it.
Thanks for your ideas.

John Wilde

 

[azgn]

better fuel (even Cam2) and more boost will produce what you want easily.....you didn't say which version of Red's chip you are running?

 

[Dan Thompson]

Could a Alky kit get him there?

 

[zam70]

Switch to alcohol and you're there. Race gas is to much of a PITA and doesn't get you much more than alcohol. The alcohol is available at your local hardware store.
You're going to have to turn up the boost - period
To get there even better - dump the trans system and go with a MaxEffort

 

[Wildeone]

I want to say it was reds 92 chip, I tried the race chip, but couldn't get the car to start. I need to send it back. What chip should I use if I go to alky, and what is MaxEffort? I probably should know, but right now I am drawing a blank. Thanks

 

[John Wilde]

Nice name.

I would consider a larger turbo and intercooler!

 

[progress1vebmx]

TE-45a big shaft turbo =D.

 

[gokada]

Originally posted by Wildeone


stock block .030 over bore
stock crank
speed pro pistons
can't remember the specs on the cam, but at the time it was more than what I needed, if vital I can look it up.
good rods (can't remember the name currently).
ta-49
stock intercooler with duttweiler neck
champion irons
champion intake
walbro 340 (hotwired)
3200 stall convertor
50 lbs injectors
red's chips
translator and lt1 maf
power plate
20lbs boost on 94 octane
3" DP
Hooker exhaust system 2'5"
atr headers

I am sure I am missing something, but keep in mind I have limited access to race gas. I know everyone says put some c16 and turn it up, but I don't have access, I can get cam2, but that is it.
Thanks for your ideas.

John Wilde

I did 480 rwhp and 580 torque with 40lb injectors, and a te 62 @ 21 lbs. You should be there with some race gas. Good luck

 

[azgn]

Originally posted by zam70
Switch to alcohol and you're there. Race gas is to much of a PITA and doesn't get you much more than alcohol. QUOTE]


uummm, that is a bit of a stretch....race gas will always be better than alky, however, if 100 octane meets your needs, alky is certainly viable

if you were running a 92 chip, you need to upgrade to at least a 100 octane chip with Red

good gas, more boost, better chip......

 

[Wildeone]

So am I getting this right. My setup should get me there with race gas and or a bigger turbo and a better chip. I don't have access to anything better than cam 2, will that do it? If I get a bigger turbo, do I need a bigger wastegate. I am using the stock one currently. Thanks for all the ideas guys. Some real world setups would help. Keep them coming.

 

[progress1vebmx]

IMO, race gas or ALKY definitely won't get you to 500HP. You need a bigger turbo... and you can get the hd acuator with it..

Anything like the 62 or 63 series turbo should do you fine, or even a te-45a =0.

Stepping up to 55 or 72# injectors would help with that turbo, and maybe a double pumper.

 

[gokada]

If I were you, I'd leave the waste gate alone for now. Start with a good race chip. Then making sure you monitor the 02s, carfully bring the boost up to about 24 lbs. Also make sure to check for knock. Try to shoot for an air/fuel of about 12:1. You should be able to see the limits of your mods around there. For example, if you go up toward 24 lbs. of boost, and your fuel psi is lets say 45 lbs, and your air/fuel is around 14:1-15:1, that would indicate your fuel reaching its limits. The same goes for the turbo. If you have to bring the boost up past 25 or so with no positive results in the air:fuel. That would indicate you've reached the limits of your turbo.

Now some might say that "I've brought the t-44 up to 30 lbs with no problems", but if it were me, I'd like to er on the safe side and keep my pistons and heads were they belong.

Another thing I forgot to mention, Change your plugs, oil, and filters prior to the dyno. Should save you some money in dyno time.

Good luck!

 

[John Wilde]

John,

He is real world dyno #s from Ed Valvo.

87' T-top GN, 3800 lbs w/driver, best ET is 11.51 and best mph is 119.5 (Different runs on different days), stock heads w/LT1 valve springs, stock cam, stock bottom end, (original untouched engine) PTE 50# injectors, PTE T64E w/PTE .63 exhaust housing, 3" MAF, MAF translator and Extender chip, Walbro 340, Ramchargers volt booster, Terry Houston 3" DP, Torque Tech 3" dual exhaust, PTE FM IC, 9/11 Torque Convertor and 2004R Transmission by Bruce Toelle.
527 RWHP, 660 RWTQ on dynojet dyno with locked convertor.


I know the tune that was on this car.
I do not think you can get 500RWHP
with a 49 and stock intercooler with stock heads.
You might be able to with your ported.
I think you will run out of turbo EI not be able
to run more than 25psi. Watch out for you IAT numbers.
Pushing that turbo hard with that intercooler is going
to make you run hot!

 

[GN SBS]

I made 507 hp and 522 ft-lbs with the combination in my sig at 22psi and 24* timing with the converter locked. Unlocked it was 483 hp. This was after about 8 other pulls and tinkering and the car was pretty hot at the time.

Did this with C16 as a safety because the spool fuel setup of ME isn't conducive to 3rd gear dnyo pulls (goes to the leaner spool curve when you jump on it rather than the thumbwheel setting). This is a new motor and I wasn't going for broke, as you can see by the boost settings.

Scott

 

[ijames]

You've got to flow more, cooler air, and the fuel to match. At least a good stock location intercooler, or a front mount, and a 61 or bigger turbo will get you to the low 400's on pump gas (based on mph, 111.0 at 4060 lbs, I got about 425 rwhp with a V2, stock heads, and PTE54 on 93 octane and no alky). Good ported irons or as-cast GN1's should get another 50-75 hp, or race gas or alky to turn the boost on up some more and crank up the timing should get (guessing somewhat here) about the same. That will get you close to 500 rwhp, and both should put you there for sure. Oh, you need more fuel with lower octane than with race gas so I think you need much bigger injectors, like 65's or 72's, or you can crank up the alky flow to provide the extra fuel that way.

 

[salvageV6]

Any of you read his combo.???

He's got a cam.

He's got champion iron heads.

He's got a champion intake.

He needs a real turbo.

Should be able to do 500 on race gas I would think maxing out the 49 now with a good race chip.

After the new turbo and injectors should be able to do it easier.

I'd re-dyno with a good race chip good gas and try to hit 25-26psi with the 49.

 

[matt87]

slap a 70 turbo on there with correct stall, beef up your fuel system, get a real intercooler and go get your dyno numbers. you got everything else.

 

[Wildeone]

Update

Well I thought I would update you on my quest. I bought the
62 te and the THDP and put them on and 116 race gas. I took it to the dyno and made 400 hp and 533 tq. My a/f was 16.5 to 1 so I did not make another run. I had Joe burn me a race chip and installed it as well. If you follow the previous posts, this is only a marginal gain over my previous best with a 49 ta and Poston down pipe and Red's chip. My a/f under the previous combo was 12.7 to 1. So what gives, my boost under the new turbo was 21 and with the 49 it was 24. Thanks for your ideas.

John Wilde

 

[gnxis]

sounds like your running out of injector.

 

[Ed Valvo]

Ported heads would have made it a lot easier. To do it with stock heads, I had to run boost levels close to 30 PSI. I was using C-16. Timing was 23 degrees via extender chip and I locked the convertor. That was worth around 50 HP. I love those chips! I also ran out of fuel. Went static at 4200 RPM! I really ought to learn how to lift.......