Supercharged LT1... what spark plugs and gap do you guys prefer??

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05-18-2007, 09:24 PM

#21

Jon@BruteSpeed

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Quote:

Originally Posted by onefastbird95

Have you run 9psi on your stock bottom end or did you build it up? I have been told 9psi is a bit much for stock, people say to bump it down a couple psi... not sure the best route to go

100 Stock bottom end, haven't even had the heads or intake off yet. Like Call911 said, you need a good tune. I am even running a little leaner than most tune at, she is at 12.0 across the board. If the car sits for awhile, I will pump the fuel out and put fresh in. I run 93 with Torco Accelerator additive, about a can to every 10 gal.

Before the supercharger, I did a dyno test with old fuel and then new fuel...19 hp. I got 14 back with NOS octane boost. And by the way, you can't keep the Torco stuff from season to season....she goes bad!!

Fuel system, no matter what boost....get a good pump in there.

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05-18-2007, 09:32 PM

#22

Jon@BruteSpeed

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Quote:

Originally Posted by CALL911

9psi is about the most I would run. Even with 9#'s, you better have a top notch fuel system, along with either a large intercooler or a methanol injection setup, not to mention a great tune.

Safely with a stock bottom end, and everything I listed above, I wouldn't go above 6#'s unless you are ready to buy a new block if the stock one goes.

Just my .02 cents. Everyone has their own opinion on this.

When I get her back together(doing the lightening mods), I may play with meth. I still have the twin 3.5" intercoolers, and they are not the best. They are hot even after the burn out, I should pick up quite a bit in the quarter going with it. I'm not data logging so don't ask the IATs. Since this is becoming primarily a drag car, air to water is starting to become an option...

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05-19-2007, 12:46 AM

#23

onefastbird95

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Quote:

Originally Posted by silver95

pmed you back to get a little more info! thanks for all advice, I am trying to read up and learn as much as I can while I am installing this supercharger. It is all new to me and I want to educate myself the best possibly way I can!