Quote:
Originally Posted by House of Darts
1975 318.
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It doesn't look like the early 318 heads are legal for your 1975 318 combo. The 308 and 576 heads will have more port volume since they are 360 heads. Both are supposed to have a better exhaust port with an improved short side radius.
I think you get a slightly bigger BBD 1-1/4" (so called High Top) with the AFB jets.
I was talking with Tim Ames at Ennis this weekend. He said he had Van Lant do his 340 and picked up about four tenths over his build. And it hasn't broke. Sounds like a good way to go for the money he spent.