307 olds to sbc or bbc

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Anthony19877

Not-quite-so-new-guy
Jun 20, 2015
21
2
1
College Station tx
hello i was wondering if anyone could tell me what would need to be done to swap my 307 for a small block chevy or big block chevy. i am trying to get a game plan together for my build i am saving for. any info would be great thank you
 

pencero

Royal Smart Person
Feb 20, 2008
1,466
25
38
Ind.
All you really need is the clamshell mounts and a 200r4. The new radiator and fans set up is common sense. If you use a different trans the parts list gets a lot bigger with the driveshaft / flexplate / torque converter then. If you have the 3-speed that sucks b/c most people don't end up liking the trans-dapt kit very much. Deciding whether to go EFI vs. carb'd and whether you really need a/c are the two biggest decisions that can push a lot of people over-budget or over-time (as in it's taking too long to finish between life) decisions you would have to make at some point.
 
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