67Firebird455

iTrader: (27)

That is AWESOME man... you're already puttin down some serious numbers... Can't imagine that kind of boost at this point since I've only experienced an "un-tuned" 7psi. What is the thickness of the MLS 6.0L gaskets?

chriswtx

iTrader: (5)

"The stock 6.0L MLS truck block cylinder head gasket is 0.038-inch thick and displaces 11 cc's" found on the net..but who knows for sure??I also found that they may be .060 compressed...also found Stock compressed 6.0L thickness is .055" with a bore of 4.080".

67Firebird455

iTrader: (27)

Wow, HUGE difference between .038 and .060! #317 heads with stock displacement and -9cc mahles, just need the head gasket to get it as close to 8.5 as possible! Chris, have you run your C5 at the track this season?

chriswtx

iTrader: (5)

Yeah, I'm traping 11.4-11.6@130mph with the 19" CCW wheels and street tires. Spinning the tires 1st-3rd gear I think they updated the head gaskest in 2002 an now they are all .55 or so

67Firebird455

iTrader: (27)

That is absolutely sickening man. I would LOVE to hit 130mph in the 1/4! I'll have to look into the gaskets, 8.5:1 should do the trick and run great. Did you get the mahle/hbeam package from racerparts? *jealous of your C5*

chriswtx

iTrader: (5)

No, not yet. I was not sure of the quality of the rods on the raceparts kit. I was going to see if TSP could price match and put a package together if I bought all the parts from them including the block...

chriswtx

iTrader: (5)

Thanks, its a work in progress. It made better numbers than I expected. I had only the 3rd or 4th Paxton Novi 2000 kit from ECS, so I wasn't real sure of what it would do. Made those numbers running pig rich at 10.5/1 AFR and 14-16* timing trying to not pop the stock pistons... The same blower and intercooler they run on there 402 shop car that runs 9.33@149mph. Doug at ECS says if I want to step up the the 402 and 15psi I can make 900+rwhp. I just laughed. I will be happy with my little 346ci and 14-16psi and making 750-825rwhp... As long as I dont do anything wrong. I do all my own work, tuning and engine builds. Weekend warrior Ok, I'm just to broke to pay anyone to do it...

Josh@KY-Turbo

iTrader: (120)

Raceparts kits use CAT Power rods last I checked. Those rods have been used in several 800+ rwhp builds. I am ordering that kit with the -16cc pistons for my build.

67Firebird455

iTrader: (27)

Yeah, I have CAT's in my 464ci Pontiac, and they've held up at 7200 rpm on a long stroke (4.210") just fine. LOL

80superbu

iTrader: (8)

What are you guys using for a compression calculator? I found this one. I Think it's working good.
http://www.angelfire.com/fl/procrastination/motor.html

67Firebird455

iTrader: (27)

I was using the one www.classicalpontiac.com under restoration. Had been using it for years and years right after I got my 67. Thanks for that link though, basically does the same thing but metric also.

NAVY

I was using this one http://www.racecars.net/calculators/...alculator.html