ragtopz28

iTrader: (57)

I was thinking the same thing...SBE

Petey-Pop-383

I made about 6-8 passes on a 175 jet, and 20-22 on the bigger jet.

Compression test and leak down after every track date, same numbers every time.
5000rpm on the 2step, all in on the release of the trans-brake no progressive controller used, shift at 7000-7200rpm, 7400-7500rpm at the stripe.

ragtopz28

iTrader: (57)

And what vehicle is this "anomaly" in??

speedtigger

iTrader: (16)

I would not be so quick to call it an anomaly. Maybe an exceptional example, but these engines can run that number at his weight on a 93 jet when everything is well sorted out.

Petey-Pop-383

Haha I had to laugh at this, as it's the same reaction I get when I run similar numbers to cars with fully built motors/forged this/solid roller that/high compression/etc etc etc.
It's ok I take no offence to my well put together combo.

Below is the video, and this season it will have a moly cage to replace the 12 year old dated 6point DOM steel roll bar and weigh 150lbs less.
Unfortunately the results won't be nice for the ego's of the luddites in the drag racing world.

Sorry.....but not really.

ragtopz28

iTrader: (57)

All I'm saying is your tune must be SPOT ON. Hell there is another thread on here where I guy is hittin a 400 shot to SBE...I don't have the ***** to go more than a 62 on my SBE

fastraiderX

thx for the info ill most likely will use the ls3 heads n have them ported n go with the 615 lift thx again ill post pics soon n also pics of the bigblock im sellin

dogsballs

I wouldn't waste my time and money porting ls3 head for only 615 lift. From factory with 2.165 intake valve will flow ~310-315 cfm @600 lift

Very delicate intake when you have only 6.0 because they are soo big. If you had monster cam or bigger cubes, then porting would benefit

fastraiderX

my friend told me to use this cam that he has in his 6.0 his has square port heads 231/247@.050 .617/.624 on 110 ctr mine has cathedral heads but found ls3 heads fully ported complete valves,springs etc on sd parts for a good price or stay with 317 heads that came with the motor and also run nos 150-200 hp

fast89stang

iTrader: (2)

I would use the square ports if they are a good deal. Better than the 317s for sure.

speedtigger

iTrader: (16)

That sounds like a good setup. Just keep an eye on your valve clearance.

He ^^^ knows. His combo works as good as any mild 6.0 out there.

fastraiderX

K thx I'll be sellin those heads when I get the motor also he told me to change all bottom end bolts with arp bolts

speedtigger

iTrader: (16)

What year is your Engine? Mine is a 2004 LQ9 and I chose not to change my rod bolts.

fastraiderX

2003 6.0 lq4 317 heads

greasess

iTrader: (1)

Ported LS3s are a lot of head for a 364 inch motor. I have seen a 500 cube LS2 based motor with ported LS3s (school of automotive machinists build)