Head Choice on LQ4 408 Stroker
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Staging Lane
Joined: Oct 2010
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Head Choice on LQ4 408 Stroker Hey all, I just got my Forged 408 LQ4 back from the builder. My question is in regards to piston to valve clearance. Now, before I go any further with my post, I want to say that I will be measuring for P to V in accordance with Tony @ AFRs post, using the clay method and solid lifters (couple of donor hydro lifters). The point of this post is to simpily make an educated guess as to whether or not p to v will be a concern using LS7 lifters.
I'm looking at purchasing the SDPC LS3 heads with the Ferra Valves. Pistons are k1 -3 cc. SDPC says their LS3 heads are 70cc (+/- 2cc) combustion chambers. Cam specs are:
247/253 .623 .623 114 LSA
Valve Timing @050 INT: 9 BTDC 57 ABDC
EXT: 63 BBDC 15 ATDC
I'm looking at purchasing the SDPC LS3 heads with the Ferra Valves. Pistons are k1 -3 cc. SDPC says their LS3 heads are 70cc (+/- 2cc) combustion chambers. Cam specs are:
247/253 .623 .623 114 LSA
Valve Timing @050 INT: 9 BTDC 57 ABDC
EXT: 63 BBDC 15 ATDC
Last edited by zman1; Feb 16, 2012 at 09:07 PM.
