305 TBI Head / TPI Head Question
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From: Rhinelander, WI
Car: 89 Formula
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 9 Bolt 3.27
305 TBI Head / TPI Head Question
Does the TPI 305 have larger valves than the 305 TBI? Would the 305 TPI have the 081 heads?
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
3rd gen 305's all had the same size valves from the factory, 1.84" intake and 1.50" exhaust.
'87-up TPI would have 081 heads. '85-'86 TPI would have 416 heads.
'87-up TPI would have 081 heads. '85-'86 TPI would have 416 heads.
Thread Starter
Junior Member
iTrader: (3)
Joined: Jan 2007
Posts: 94
Likes: 0
From: Rhinelander, WI
Car: 89 Formula
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 9 Bolt 3.27
Re: 305 TBI Head / TPI Head Question
That was my first thought but nice to verify. Thanks much.
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