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#1 |
Registered User
Join Date: Dec 2001
Location: Manteca, Ca USA
Posts: 305
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SB to BB conversion?
I'm about to drop a big block in my 71, which originally (and currently) has a small block in it. Do I need to change the frame mounts or move them? An old guy around the corner from me said that A-body headers fit better than truck headers. Anybody have any expierence with chevelle headers??
Thanks!!
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'71 Chevy 3/4 Ton Longbed '22 Chevy Tahoe RST '67 Firebird- 8 sec street car '24 GMC CC 4x4 Duramax Dually |
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#2 |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: SB to BB conversion?
When we did mine we had to use newer big block mounts and towers, I think they are the ones that came with the '73 454 to be able to use the unknown hooker headers I picked up at a swap meet.
I have a '71 C-10 that has a granny low 4 speed and did not want to move the transmission because I did not want to have to change the length of the driveshaft. We lowered the engine in and mated it up with the transmission and let it settle in then drilled new holes on the frame. It worked out real good with plenty of clearance at the firewall and just the right amount of distance between the fan clutch and the radiator.
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'67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E. |
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