Originally Posted by moparx
i was just wondering if anyone has any experience with speedmaster big block heads, but since i need to read things twice, i guess i will not finish until sometime next week........ laugh2
John, would you say the big block speedmasters would [somewhat] compare to the rpm plus heads, like your comparison of the small block heads ?
also, how much do you suppose you will cut out of the small block heads ?
beer




No I had a long talk to Speedmaster about their big block heads. Somewhere along the way they lost their direction and now only offer the copy of Edelbrocks Victor heads. Aimed towards a saturated market for stroker type of builds it probably sells one set for every 12 sets of the regular smaller Edelbrock heads. They are looking into it. Not a lot of Mopar guys want to buy a special offset rocker but when ported those heads will flow 370-380 cfm.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time