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Sammy · 08-25-2014, 08:03 AM

I considered using a 4.3 in my project truck. (It now sits in the corner of my garage taking up space.) Manifold clearance issues n the wire chasing nightmare changed my mind. Sm block towers for mounts appeared to work. The rear side of the block looks to be identical to a V8 also. I can't see using anything but a OD tranny or 6 speed manual behind it. On a good day my 97 blazer could manage 20 MPG if your foot wasn't too heavy. So dunno if there would be much savings in MPG in the swap and worth all the headaches maybe better off just doing a LS1 swap more desirable in the long run and becoming more common now days.

08-25-2014, 08:03 AM	#28
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: Any 4.3 v6 swaps? I considered using a 4.3 in my project truck. (It now sits in the corner of my garage taking up space.) Manifold clearance issues n the wire chasing nightmare changed my mind. Sm block towers for mounts appeared to work. The rear side of the block looks to be identical to a V8 also. I can't see using anything but a OD tranny or 6 speed manual behind it. On a good day my 97 blazer could manage 20 MPG if your foot wasn't too heavy. So dunno if there would be much savings in MPG in the swap and worth all the headaches maybe better off just doing a LS1 swap more desirable in the long run and becoming more common now days. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"