400 RWHP With Stock Heads?

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Jul 28, 2003 | 11:46 AM

Wease

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From: Delaware, OH

400 RWHP With Stock Heads?

OK, this is in continuation of a thread I had last week, but now a bit of a change. I dyno'd 371/371 with the following mods: C1 cam, ASP pulley, lid, Hooker LT's, ORY, GMMG Exhaust, and some LS1-Edit tuning. I'm going to be adding the following mods/tune to the car within the next two months:

1. LS6 Intake
2. Ported TB
3. 85 mm MAF (or should I stay with the stock one?)
4. True duals via x-pipe
5. Short belt
6. Better LS1-Edit tuning (should be ~5 RWHP)

What are the chances that I could gain that extra 29 RWHP and hit 400?

Thanks to all that reply...

Jul 28, 2003 | 01:06 PM

SouthFL.02.SS

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From: Miami

Re: 400 RWHP With Stock Heads?

Should be close. Let us know.
MAF is such an X-faxtor. Tuners like the stocker.

My guess would be a gain of 20hp with the list.

Jul 28, 2003 | 01:29 PM

Wease

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From: Delaware, OH

Re: 400 RWHP With Stock Heads?

Quote:

MAF is such an X-faxtor. Tuners like the stocker.

Yes, I've heard that too. I might see if I could borrow a local one and see for sure when I get it dyno'd/tuned.

Thanks for your input. I will disagree with you though on the 20 HP. I think it will be at least 25. The LS6 intake should be 15 right there. 5 HP gain with everything else might be a bit low. But no problem, just a friendly disagreement. I hope to prove you wrong...

Jul 28, 2003 | 01:35 PM

SouthFL.02.SS

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From: Miami

Re: 400 RWHP With Stock Heads?

Quote:

...I hope to prove you wrong...

I hope so too...

Jul 28, 2003 | 01:42 PM

deviate42

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From: Houston, TX

Re: 400 RWHP With Stock Heads?

its gonna be really close. I think you could pull 25 off.
Keep us posted

Jul 28, 2003 | 04:16 PM

Wease

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From: Delaware, OH

Re: 400 RWHP With Stock Heads?

Quote:

I think you could pull 25 off.

That's what I think, at least that much. Hey, I already have my GMMG and coated y-pipe sold (took all of like 5 hours), which will more than fund the true duals and LCA's I had planned next...

Jul 28, 2003 | 06:58 PM

99 Black Bird T/A

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Re: 400 RWHP With Stock Heads?

Quote:

and some LS1-Edit tuning. I'm going to be adding the following mods/tune to the car within the next two months:

1. LS6 Intake
2. Ported TB
3. 85 mm MAF (or should I stay with the stock one?)
4. True duals via x-pipe
5. Short belt
6. Better LS1-Edit tuning (should be ~5 RWHP)

What are the chances that I could gain that extra 29 RWHP and hit 400?

Thanks to all that reply...

I don't think the 85mm MAF will be worth more than 1rwhp with good LS1-Edit tuning.

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