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I'm not sure if Trick flow makes twisted wedge heads for SB chev......they were originally a Ford aftermarket head company, and then branched into Chevy. I think I remember some early twisted wedges (Chevy), but don't see them advertised anymore. Maybe someone knows more......
I've had Trick Flow Twisted Wedge heads since the second generation were first introduced. Some of the early TW had some guide issues, mine have been trouble free and flow very well.....I would buy another set if I could.
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
I have had a set of Trick Flow heads on my vette for about 5 years or so. I don't really know how to tell the difference between Twisted Wedge or the plain vanilla ones. I believe mine are the plain vanilla ones. My valves are straight up and down just like standard chevy heads.
The intake valves on the TW heads are angled 13*, the exhaust are at the standard 23*. You can't miss them....Cam selection is limited because the valve no longer matches the pocket in the piston. If I remember correctly, something around .512 and 238*@ .050 on 106 lsa is about max.
Trick flow quit making these for Chevrolet small blocks because the geometry on the pushrod is incorrect and they were prone to bending pushrods, eating valve guides and problems thoughout the valvetrain. You need special pistons ( i think they were called G2) with higher lift cams or dome pistons and Trickflow twisted wedge rockers. They do flow very well but I would avoid them. AFR , Brodix, Dart are better options. If they were that good they would still be making them!
I have the Trick Flow 23* heads for SBC on my 383. They perform well, and they are a good value for the $$$$$. If you want to spend more money, you can get the AFR's, but the TF's are a good head.