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Username Post: 454 into 57 chevy        (Topic#357581)
rockin rebel 
Posts: 93
rockin rebel
Age: 71
Loc: Langley, BC. Canada
Reg: 03-31-11
08-08-19 09:35 PM - Post#2772775    

I know n a 55 you have to dimple the firewall.. how about putting a big block in a 1957 Chevy ???


Posts: 187

Loc: Colorado
Reg: 02-07-05
08-09-19 05:00 AM - Post#2772789    
    In response to rockin rebel

Same deal. A better alternative to BFH damage would be to section in a portion of a steel wheelbarrow.


Senior Member
Posts: 1544

Loc: North Coast, USA
Reg: 12-19-01
08-11-19 06:01 AM - Post#2772948    
    In response to niftyfive

OP has it right, some minor work using a hammer and dolly.

Gold Supporting Member
Posts: 5838
Age: 69
Loc: Everett, Wa.
Reg: 02-26-08
08-11-19 01:41 PM - Post#2772974    
    In response to 55MAS

There is an entire forum related to "BBC into a Tri-Five", on that "other" 55-57 Chevrolet site. There are several different ways of doing the swap, depending on where you want to place the engine, and why. Stock bellhousing with a stick shift limits where it can go, unless several other things are also addressed. Stock location to 2-1/2 inches forward, just to give you an idea. The farther forward, the less firewall work is needed, but header to steering box, cross link in the steering, clutch linkage, all get affected with moving things forward. It seems, the best way to go about it, is to use the Williams setups; motor mounts, headers, etc, but probably the most costly as his parts are't "cheap". I did a BBC into a 56, model 150, Utility Sedan in about 1973, and it was the first time for something like it for me; it went off without a hitch. There was a fair amount of firewall massaging involved, and that was with stock valve covers, the oil pan just "touched" the cross link with far right/left turning of the steering wheel, and the number 5 header tube required just a little dimpling. I had to notch the cross-shaft Z-bar bracket attached to the bell-housing to clear the oil pressure sending unit, and "occasionally", the distributor cap would make contact with the firewall (small diameter distributors/caps were't around then). An automatic transmission would have been easier in several ways. That car eventually became my first dedicated drag car, a Pro Bracket car, and then sold to step up to my front engine dragster. I am Butch/56sedandelivery.
I am Butch/56sedandelivery.


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