Picked up a 8.1 today for a steal. It's going into a 67 ss chevelle i had originally slated a 6.0 swap but can't beat cubic inches. Are the 8.1's the standard BBC and port configuration that GM has used forever.

It's hot, it's late and after a long day I haven't gone out to the shop to pull off the manifolds and try the vortec 454 manifolds laying on the floor. Just figured I'd ask to see.

Thanks

 

I am pretty sure they are identical. Did see that Dart makes a regular old carb intake for the 8.1 now? It would make the swap so dang easy to get it running w/just a carb & a distributor (and a cam of course).

 

Sweet, Im going injected with it. I can build the truck harness to fit my car and none of the crankiness of a carb. I'm going to swap the cam in it she's gotta have a bumpity idle to match the SS demeanor. The 6.0 was going in but with such a smoking deal on the 496 I couldn't pass it up. No replacement for displacement.

 

You bought the engine i was trying to buy, I have an 8.1 in a 04 1500. If you need more info about these motors let me know.

 

Whats your 20?^

 

the only way to swap old heads on a 8.1L would be to get different gaskets to redirect the water passages, then you would have to run a manifold for a carb, i guess you gould drill it and install injectors and fuel rail... Way to much work and money for the hp gain.

 

Killeen