dose a 4.3 require a v8 trany. some people told me that it dosent and some tell me it dose. how much hp can you get out of a 4.3?
thnaks

 

yes and no the tranny will be the same with some min. differances shifting rpms. but, mostly it will be the stall on the converter.

 

The 4.3 is a 350 with two cylinders removed (262 CI). That's 3 cubic inches less than the original small block Chevy V8. Theoretically, you should be able to get 75% of the power a 350 can obtain, which is about 120% of the power the original SBC made.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, TBD heads ported & polished, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

 

Are you thinking of going from a 2.8/3.1 to a 4.3? The 4.3 is a 90 degree V6, and holds the bolt pattern for a v8. So, this means a 4.3 won't bolt up to a trans from a 2.8/3.1 V6.


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

Is that the 4.3 V-6 truck motor or the 4.3 V-8 found in the caprice?

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-John
92 RS
-L03 305
-700R4 auto.
-2.73 peg leg
-GMPP open Air Element
-Hypertech Street Runner chip
-Hypertech under drive pullies
-R&R High Flow Catalytic Converter
-Flowmaster Catback Exhaust (with NO tips)
-K&N Crankcase breather
-Kenwood CD head unit
-Kenwood 6x9 speakers in rear.