You really need to know what valve body is used in the Tranny. Strange TCI could not give you an answer. If you remove the tranny pan, there is usually a number on the valve body for reference. I just went to TCI website and was looking at Part # 221580 valve body, and could not locate the installation instruction. Hmmm, that's frustrating. Any wonder they can't help you.
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68 Firebird. IA2 block, 505 cu in, SD Performance E-head, Solid roller 3600 weight. Reid TH400 3:90 gear. 28" slick.
Best so far 9.95@135 mph. 1.39 60 ft.
76 Trans am, TKX .81 o/d, 3.73 Moser rearend,
468 with KRE D-ports, Doug headers, 3" Exhaust
950 Quickfuel.
Last edited by chuckies76ta; 03-25-2026 at 07:03 AM.
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