A fellow member here just swung by tonight and we dialed in the tune on his 86 Z, i figured i would share, it was a bit lean after getting the timing in and now she is spot on adter jetting up the primary a few sizes, it was only a bit rich. The cam is a custom grind 235/239, 110 LSA and .600 lift, milled 243 castings and a over the hill 200K plus 5.3 liter, go LS! Runs fantastic, 750 DP, 74P 78S jets, hawks swap headers with built 700R4, 3.90 gears in a 10 bolts. Has some clean up to do but this is his first time to drive it since the swap, he towed it to my place and drove it home. He had a 6.0, which the replacement pistons let go and now he went this route for temporary till he gets another 6.0 to increase power(or will there be a stroker?).









This thing runs like it should, i will say that!

 

Looks and sounds good.I vote for a nice carb 402/trex when he gets the 6.0 back up for a mild setup lol.

 

Im guessing you ran that MSD controller box?

 

A Trex is not enough to feed a 400ci LS, not past 6400 RPM anyway, last one i helped a friend build was 258/264 @.050, the Trex is 242/248. So custom grind if he does go bigger!


It is in the pic, the 6010 box. Initial is now 20*, then ramps to 35* all in by 2000.

 

What exhaust is on the car? Sounds awesome!

 

Was a blowmaster single in dual out. I don't like them, they sound hollow and holding back. Not bad, but not my preference.

 

I really liked how the single 10 series sounded on your red car!

 

1 chambers are kind of the exception. Not much chamber there to cause that holding back sound I think.

The car in this post has gone 7.4 with a 6.0 now. Same heads and cam the 5.3 used. 5.3 went 7.8s.

 

Do the one chambers drone like hell like most flowmastes do?

 

Pretty much.

 

The only Flowmaster I've ever liked is the Force II I have on the LS1/T56 Berlinetta, and it doesn't even look like they offer it anymore.