My LS-Coupe Turbo Build

[TTls1coupe]

Dont the L92 head need to be ran on a 4" + bore? I know the 5.3 bore aint 4 inches

5.3 is not a 4" bore. And I'm not going to make it a 4" bore it will be stock. I'm not going to tell how I do it to sorry but it works just fine

[sosoe]

5.3 is not a 4" bore. And I'm not going to make it a 4" bore it will be stock. I'm not going to tell how I do it to sorry but it works just fine

GMPP small bore l92 heads?

[dville_gt]

5.3 is not a 4" bore. And I'm not going to make it a 4" bore it will be stock. I'm not going to tell how I do it to sorry but it works just fine

Small bore l92's and a bored 5.3 out to 3.90"?

[OrangeChevyII]

My guess is he won't say.

[Cmarsh]

Trying to get the power back with timing is asking for trouble. And based on what i have seen from your tune(what you have posted), you dont have alot left in that area. Id go 11:1, e85 and let it make real power.

[80coupe]

anyone see this on yellowbullet.

http://www.yellowbullet.com/forum/showthread.php?p=8939499#post8939499

[TTls1coupe]

GMPP small bore l92 heads?

No l92,ls3 head.

[TTls1coupe]

Small bore l92's and a bored 5.3 out to 3.90"?

No like I said stock bore 5.3 I will give u a clue GM use to do it from the factory.

[dville_gt]

Trying to get the power back with timing is asking for trouble. And based on what i have seen from your tune(what you have posted), you dont have alot left in that area. Id go 11:1, e85 and let it make real power.

I'm not going to increase timing, just stating that some folks actually make more power on less boost via more timing that can be achieved with lower compression. I am going to stay on pump and add another large meth nozzle to the mix. Motor should only lose ~3-5% with the 1 point drop and I'll more then make that up with boost. Everyone can have their own theory on why my piston broke a ring land. I don't think the tune up was to blame. The stock parts lasted a lot of passes on pump gas. Not willing to throw in the towel on it yet.

[TTls1coupe]

I'm not going to increase timing, just stating that some folks actually make more power on less boost via more timing that can be achieved with lower compression. I am going to stay on pump and add another large meth nozzle to the mix. Motor should only lose ~3-5% with the 1 point drop and I'll more then make that up with boost. Everyone can have their own theory on why my piston broke a ring land. I don't think the tune up was to blame. The stock parts lasted a lot of passes on pump gas. Not willing to throw in the towel on it yet.

It's not that we have our theory it's that me Sam and Chris have been doing this for 10 + years and have seen that same thing happen to ur piston 1,000,000 times and it detonation. Im not being a puck but just telling you what it is. The truth hurts something sorry bro.

[OrangeChevyII]

You destroked a 327 (5.3) to a 302 CI motor!!! They were running little bastards. Turned nearly 8,000 rpm. Damn Chevy!!!

[sosoe]

5.3 AL block, stock rods, stock bore and a 4.8 crank. I think ive read it on a carcraft magazine one time. i might be wrong though

[FRANCISCO308]

I doubt it, have you ever known me to have a slow car? Much less a slow truck?

Only a few

[Sam88gta1]

I'm not going to increase timing, just stating that some folks actually make more power on less boost via more timing that can be achieved with lower compression. I am going to stay on pump and add another large meth nozzle to the mix. Motor should only lose ~3-5% with the 1 point drop and I'll more then make that up with boost. Everyone can have their own theory on why my piston broke a ring land. I don't think the tune up was to blame. The stock parts lasted a lot of passes on pump gas. Not willing to throw in the towel on it yet.

A fool you have turned out to be. If you dont think it was your tune that broke the piston you are learning nothing from your mistakes. That is the first sin of tuning.


Only a greenhorn would try to make power with timing over boost. This is why real tuners (like myself) get paid the $. Something has to seperate us from fools like you.

[Sam88gta1]

Trying to get the power back with timing is asking for trouble. And based on what i have seen from your tune(what you have posted), you dont have alot left in that area. Id go 11:1, e85 and let it make real power.

17lbs and 15 degrees of timing isnt safe?

But he has the home made meff system!