mid 80's 400
would a 400 from a '71 firebird fit right in to a mid '80s firebird?
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Yes but not really easy. The 71 400 is a pontiac Big block. The other problem is It will require the proper Bell housing to fit to a trany. Then the next problem will be headers as it will be har to get them to fit. It can be done bit expect alot of work. I also think It would require moving the Motor mounts. It will not be a straight swap.Originally posted by 80TA400
Eric W.
89 Firebird Formula WS6
Accel/Lingenfelter Super Ram
6.2L/382.97 ci
Custom PROM Dyno tuned
WCT-5 speed
BW 9-bolt Posi 3.45
Boss MS 18" Rims
Headman Headers 1 5/8 Ceramic Coated
Custom Dual exhaust
1LE upgrade
Custom Temperature / Navigation Rear View Mirror
In a constant state of upgrade!
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Isnt there a 400 small block? If so, that should bolt right up.No F-Body right nowComment
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Originally posted by 80TA400
A pontiac 400 in a 3rd gen f-body?
That won't just bolt up. It will require a BOP (Buick Olds Pontiac) transmission and possibly some custom motor mounts, a custom length driveshaft and a custom crossmember.
I'm sure it wouldnt be overly difficult if you have some basic fabrication skills.
I'd be willing to bet there is someone somewhere that sells the crossmember and motor mounts. You might want to try asking at www.thirdgen.org.Tracy
2002 C5 M6 Convertible
1994 Z28 M6 Convertible
Current Mods:
SLP Ultra-Z functional ramair, SS Spoiler, STB, SFCs, Headers, Clutch, Bilstein Shocks, and TB Airfoil. 17x9 SS rims with Goodyear tires, 160F T-Stat, MSD Blaster Coil, Taylor wires, Hurst billet shifter, Borla catback with QTP e-cutout, Tuned PCM, 1LE Swaybars, 1LE driveshaft, ES bushings, White gauges, C5 front brakes, !CAGS, Bose/Soundstream audio, CST leather interior, synthetic fluids
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He is asking about a pontiac 400, not a SBC 400. But yes, if he had a 400 Chevy motor it would bolt directly in.Originally posted by Mark BTracy
2002 C5 M6 Convertible
1994 Z28 M6 Convertible
Current Mods:
SLP Ultra-Z functional ramair, SS Spoiler, STB, SFCs, Headers, Clutch, Bilstein Shocks, and TB Airfoil. 17x9 SS rims with Goodyear tires, 160F T-Stat, MSD Blaster Coil, Taylor wires, Hurst billet shifter, Borla catback with QTP e-cutout, Tuned PCM, 1LE Swaybars, 1LE driveshaft, ES bushings, White gauges, C5 front brakes, !CAGS, Bose/Soundstream audio, CST leather interior, synthetic fluids
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