4.3L vs 5.7L ? ? ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vwdonnyd · 06-04-2009, 12:58 PM

I want to put a 4.3 4spd auto into a 67-72 for my youngest..(already have a "driver w/the 4.3)...what do you think? and someone said go 70/71 for pwr strg and disc brakes....true? help help thanks Don

72BlckButy · 06-04-2009, 02:08 PM

Don, that is correct, you can generally go to a '71-'72 (or even later) to acquire disc brakes for your project. As far as dropping in the 4.3l I don't see a problem doing so, but you can't go wrong with a 5.7l.

But then again, this is for your youngest, so I'd drop in the 4.3l and save the 5.7l for your project.

06-04-2009, 12:58 PM	#1
vwdonnyd Registered User Join Date: May 2009 Location: Sedro Woolley, Wa Posts: 4	4.3L vs 5.7L ? ? ? I want to put a 4.3 4spd auto into a 67-72 for my youngest..(already have a "driver w/the 4.3)...what do you think? and someone said go 70/71 for pwr strg and disc brakes....true? help help thanks Don

06-04-2009, 02:08 PM	#2
72BlckButy Tot Roddin' Join Date: Apr 2005 Location: Mid-MO Posts: 24,461	Re: 4.3L vs 5.7L ? ? ? Don, that is correct, you can generally go to a '71-'72 (or even later) to acquire disc brakes for your project. As far as dropping in the 4.3l I don't see a problem doing so, but you can't go wrong with a 5.7l. But then again, this is for your youngest, so I'd drop in the 4.3l and save the 5.7l for your project. __________________ -Nate 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)



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