Quote:
Originally Posted by b-man
The ‘66 389 is far from an ideal platform for a blown street cruiser.
Thin bores which are a known issue with the 1966 block castings and heads with press in studs and small high compression combustion chambers are not the best way to start out.
I think you’re underestimating the difficulty of making the accessory drives work with the blower drive belt setup, packaging everything in front of the engine and behind the radiator is not a slam dunk.
For the cost of just an 8-71 blower and everything needed to make it work on any Pontiac engine you could build a nice 400-based stroker or 455 with a much easier to manage and tune 4-barrel carb and have an easy 450 to 500 horsepower.
If you’re wanting to build a reliable street blower engine be prepared to crack open your wallet to the tune of 10 to 15 grand, and quite likely more than that. A nice naturally-aspirated Pontiac engine built off of a much more solid pre-‘75 400 or any year 455 instead of a 389 will be around half of that.
Learn more about Pontiac engines and make a solid plan before diving in, it’s not a simple thing to put a roots blower on a V8 of any kind and expect to drive it anywhere and everywhere.
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... So would all of my accessories bolt up to a 400 or 455?