ThreePeaks,
I already have the heads.
The story behind it is: the dealer were I bought the Superformance Cobra replaced the engine (due to some sort of failure). The old engine was a 351W stroked to 427 cid and tuned to top end HP. The "new" engine ('69 351W block) is a 393 stroker with another camshaft. They used the old Edelbrock heads and Edelbrock ProFlo fuel injection (including the manifold)
In such a setup it is essential that the Eprom in the ProFlo is programmed for the specifique camshaft that is used. The engine will not run well or not at all with another camshaft. I tried to find out what camshaft is now used, but no answer
.
I figured my best shot would be to buy a new, suitable cam and then get the Eprom programmed again for that camshaft.
New heads are beyond my budget, I have to work with these heads, maybe new springs, keepers and locks are possible.
Anybody using the XE274H in a stroker? This one is a bit milder than the XE284HR.