Thread: BBC 336781 Heads?

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yep i have used them heads .i am doing a build right now with a set but i am going to 2.250 1.880 with 11/32 stems will be a 496. why flat top pistons ? you not going to put much cam in it that point .no need for the 2800 stall ? no gear in a heavy truck??? the cam that i use alot i would not use in your build with low CR if hyd roller cam some thing like 225/235 @ 050 600/600 on a 108 you will need more gear or this is abit mild but would work good in a heavy truck you will need a 2000 stall 218/226 @050 588/588 on 114. if your sold on flat tops .i tru- deck the block with BHJ i then deck the block to O or in the hole a wee bit 005 thats about it that will help . you can give the heads a good hair cut as well

Yeah the deal was a 4 bolt main block (454) already bored .060 with the stock crank and stock rods that already had the brand new flat tops on them. It also came with a set of peanut port heads and my cylinder head guy said they would choke out after 4,500 rpm or so. So I found the 781's for $200 complete and i'm gonna cut them for 2.19/1.88 valves and get them a basic port job. They look as if they have been milled before but look stock other than that. I was planning on at least a .550 lift cam but I want a nice flat torque curve throughout the rpm band. I know the gears gotta go, and they will as soon as I can afford them. I don't know how to install them myself. I really just want it to be fun and powerful, And it will see some midnight drags as well. So lower the stall and be conservative on the cam, right? I will have to use Flat tappet for now so what would you recommend, keeping in mind the gears are next in line. I was considering comp extreme 4x4 cam with more exhaust duration.

do the 781 heads have screw in rocker studs?