New products from Trick Flow
Teching In
Joined: Jun 2010
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On The Tree
Joined: Feb 2010
Posts: 112
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From: STL
hmm, I am kinda wondering, what kind of numbers tea will get out of the ls7 castings. if you can get similer numbers out of the intake as a set of stockers, and get the increased exhuast flow that t f is known to have over everyone else, they would be a welcome addition to my motor.
Launching!
Joined: Nov 2009
Posts: 245
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From: Illinois
Thread Starter
LS1Tech Sponsor
Joined: Feb 2008
Posts: 300
Likes: 18
Pricing will be available once the heads are in production somewhere at the beginning of March.
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L92/LS3
255 cc
2.100 intake valve
69cc chambers
1.300 dual spring
4" minimum bore
Flow Numbers
Lift Intake Exhaust
.100 72 62
.200 159 117
.300 234 179
.400 292 224
.500 333 240
.600 357 252
LS7
255 cc
2.100 intake valve
69cc chambers
1.300 dual spring
4.125" minimum bore
Flow Numbers
Lift Intake Exhaust
.100 72 62
.200 159 117
.300 234 179
.400 292 224
.500 333 240
.600 357 252
255 cc
2.100 intake valve
69cc chambers
1.300 dual spring
4" minimum bore
Flow Numbers
Lift Intake Exhaust
.100 72 62
.200 159 117
.300 234 179
.400 292 224
.500 333 240
.600 357 252
LS7
255 cc
2.100 intake valve
69cc chambers
1.300 dual spring
4.125" minimum bore
Flow Numbers
Lift Intake Exhaust
.100 72 62
.200 159 117
.300 234 179
.400 292 224
.500 333 240
.600 357 252
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Noted that. But why is one for a 4" bore. Obviuosly something is different. Does it have a smaller exhaust valve? I would think there would be a small difference of at least a few cfm if they are not totally identical.
Thread Starter
LS1Tech Sponsor
Joined: Feb 2008
Posts: 300
Likes: 18
Sorry I have not been on to answer your questions. The heads are still going through our testing on our dynoes. When everything is done I will come back on with full details. Things are always subject to change during testing if we see something we do not like.
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Looks like you also have a lot to offer this site!! 
Your post count is also rather low for the amount of time you've been here. Oh and BTW you are wrong about this site being $$$$ driven. The proof is in the pudding as Mr. Tooley has so kindly pointed out!!
Your post count is also rather low for the amount of time you've been here. Oh and BTW you are wrong about this site being $$$$ driven. The proof is in the pudding as Mr. Tooley has so kindly pointed out!! 
Yes, all of the LS3 and LS7 castings are going to be 6 bolt.
Drilling the bolt holes to 17/32" for the 1/2" head studs and be performed on any LS head for a small fee.
The LS3 is designed for a smaller bore, the exhaust valve is moved in .050" from the cylinder wall compared to stock LS7 and has a .010" smalller valve than stock LS7.
The LS3 is designed for a smaller bore, the exhaust valve is moved in .050" from the cylinder wall compared to stock LS7 and has a .010" smalller valve than stock LS7.
Last edited by Brian Tooley Racing; Feb 10, 2011 at 09:37 PM.
