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My72BB · 11-20-2007, 01:13 PM

If you are running a stock fuel pump you need to put a return line on your fuel system back to tank. Also, as far as cooling goes...a fan clutch for a 454 like say 77 and up from a 1 Ton will be the thicker heavier duty one that will really make a difference if you have Air Conditioning. NAPA or the dealer are the places I have had luck getting that style...Autozone and Orielly, etc do say theres are heavy duty but are the thin style and not worth a crap.

You also might want to look at your front springs...The Big Block is just a "scosh" heavier than the 307.

Alan

11-20-2007, 01:13 PM	#4
My72BB Registered User Join Date: Oct 2007 Location: Fairfield, PA Posts: 503	Re: SBC to BBC. Who's done it, Whats needed If you are running a stock fuel pump you need to put a return line on your fuel system back to tank. Also, as far as cooling goes...a fan clutch for a 454 like say 77 and up from a 1 Ton will be the thicker heavier duty one that will really make a difference if you have Air Conditioning. NAPA or the dealer are the places I have had luck getting that style...Autozone and Orielly, etc do say theres are heavy duty but are the thin style and not worth a crap. You also might want to look at your front springs...The Big Block is just a "scosh" heavier than the 307. Alan