The Chevy 4.3L V6 as well all know is basically 75% of a Chevy 350 so it only makes sense that there would be a market for speed parts for these engines but we never knew the extent that Chevy went with them as evidenced by this wild set of canted valve cylinder heads designed for the mill. Designed to be used in all-out racing applications, these heads (according to the seller and what we have been able to dig up) are exceedingly rare and can move enough air to support up to and maybe over 700hp in engines that can turn 10,000 or more RPM. Can you say NHRA comp eliminator?
We found plenty of examples of 90-degree V6 aluminum heads for sale on eBay but no others that carried this specific part number and no others that had canted valves like this. Every other set of heads we saw had the traditional inline valve layout that you are used to seeing in a small block Chevy style engine. The ports in these babies are huge. We have no measurements nor could we find any but their shape and the eyeball impression we get is that they can really move for air when given the chance with lots of cam and lots of revs.
Were these heads used outside of drag racing? Were they used in stock car racing at any time? Busch cars had V6 Buicks for a while, right? Did they ever run Chevrolets? Anyone have any experience with these bad boys? Spill the beans!
CHECK OUT THESE HEADS AND THEN HIT THE EBAY LINK AT THE BOTTOM –
CLICK HERE TO SEE THE EBAY LINK FOR THESE 4.3L CANTED VALVE CHEVY V6 HEADS
Didn’t the Corvette GTP (Rick Hendrick ) raced in Imsa in the mid-80s use a turbo 4.3 for a while ?
Those used Turbo Buick 3.8Ls if I recall.
ASA ran a V6 series here in the midwest, in the 80’s also. I just don’t remember if they used those heads.
Would these use BBC valvetrain bits I wonder?? Neat pieces for sure.
I don’t have the answer to your question, but they sure do look to be patterned from BBC heads.
They could be from the Cars & Concepts Beretta Trans-Am program of the early 90s. Those were V-6 cars and pretty quick to boot.
If those heads are rare, might even harder finding the intake for it!
Perhaps they are off of the Baja S10 trucks. Chevy ran 400hp 2.8L v6’s until the new body style trucks came out in 1994. They had 4.3L v6’s in s trucks since 1987. If they were getting 400hp out of 2.8L’s I can only imagine what kind of power and what hardware they had in the 4.3
Oh look, tiny 351 Cleveland heads.