2011 Camaro, LS3, 260cc AI heads, Fast 102/90, LS3 Street Heat Stage 2/Kooks/GMPP

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12-17-2012, 10:18 AM

#21

Sales@Tick

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Quote:

Originally Posted by Tainted

Its the tsp small bore ls3 heads im referring to. I originally asked comparing between the prc 237 and the tfs 235, and then I asked about the 250 ls3 heads, and he said he prefered those to the trick flow. I didnt heckle him anymore beyond that. Im filling out the sheet for his cam spec so that will be based off which heads. I really think the 255s may be the ticket but I always love getting multiple opinions from knowledgeable people.

I really like the TFS heads with the bore size that your engine has. With a 4.030" bore the large valve of the LS3 heads begins to be shrouded by the cylinder wall between .300"-.0400" of inch lift. Of course that is usually right in the meat of the lift curve and where most heads reach peak acceleration, or at least heads that have been optimized for a hydraulic roller in a street application.

I really like a 2.08-2.10" intake valve diameter for the 4.030" bore, but the 2.16" stuff can still make good power it just needs more attention to the camshaft specs as they are more finicky to valve events and overlap.

Quote:

Originally Posted by therat1989

Nice job tick. I cant believe the power output these LS3s make. My poor little LS2.... Got any idle videos of the car? Im sure tge owner wouldn't mind.

I was going to take my tablet from home to video a clip of the idle, but I forgot to bring it and they actually picked the car up this morning...sorry buddy.