Down on expected power?
Thread Starter
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
Down on expected power?
By build:
LS2
402 CID
Wisco pistons, 9.6 cr
Blower cam and springs
ProCharger D1, 4" pulley
FAST 102 w/ stock TB
1 7/8" headers
80 # Marren injectors
A&A fuel system
Comp roller rockers
Car made 611 hp
I was expecting more like 675 ??
Was this expecting too much?
I'm very happy it's the 611. The car is rocket, but more IS better.
LS2
402 CID
Wisco pistons, 9.6 cr
Blower cam and springs
ProCharger D1, 4" pulley
FAST 102 w/ stock TB
1 7/8" headers
80 # Marren injectors
A&A fuel system
Comp roller rockers
Car made 611 hp
I was expecting more like 675 ??
Was this expecting too much?
I'm very happy it's the 611. The car is rocket, but more IS better.
Melting Slicks
Joined: Feb 2013
Posts: 2,034
Likes: 111
how much timing is in it? the aggressiveness of the tune will dictat A LOT. also no mention of meth.
also, if you have siemens injectors it is possibly you are having minor boost leak at the injectors and should get the katech oversized injector or ings.
also, if you have siemens injectors it is possibly you are having minor boost leak at the injectors and should get the katech oversized injector or ings.
Drifting
Joined: Jul 2006
Posts: 1,700
Likes: 60
From: Springfield IL
I bet that thing barely makes 5-6psi. As everyone else said, pulley it to the moon, ditch the lsx intake, and make sure you're packing timing into it. It'll take a bunch of it with the lower compression.
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Drifting
Joined: Jul 2006
Posts: 1,700
Likes: 60
From: Springfield IL
Drifting
Joined: Jul 2006
Posts: 1,700
Likes: 60
From: Springfield IL
With an engine that actually flows, I figured the restriction (psi) would be far less with the amount of air the blower is pushing using that pulley. On the stock size main pulley, he should have enough to drop the blower to a 3.4-3.55" pulley.
Thread Starter
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
I think I will have to pulleyndown the D1 and add meth to get where I want.
The drivetrain is 100% Z06, so I'm hoping this setup will live with 700 whp.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
Could be in the tune and it's just pulling a bunch of timing as the IAT gets higher. At 12psi, your IATs will climb pretty fast without meth. Put a meth kit on it and retune it for that. With 9.6 static compression it should be able to handle a good bit of timing anyway, depending on the specs of your "blower cam".
Last edited by CI GS; Nov 21, 2016 at 08:29 AM.
Banned Scam/Spammer
Joined: Jan 2012
Posts: 3,263
Likes: 342
From: Chicago Il
I have been running a fast 102 no problem for over a year now. Not one issue. Been to the track numerous times, and the car made 649 rwhp. Also have a friend making 1300 hp on a twin turbo set up running a fast. To me it seems that the newer fast intakes have addressed the issues. No real evidence on my part, but for over a year not one issue. My trap speed is consistent 131-132. Best pass was a 10.79 on a stock clutch, stock bottom end launching at 3300 rpm.