3782461 GM Double Hump Heads

I'm in the process of building an 86 Chevy SWB. 355 with h-beams, Keith Black flat tops, noisey gear drive (purely for the irritation factor), 270 comp cam, roller rockers, Edelbrock Performer RPM, Edelbrock 650 CFM Carb, built 700R4, and a 12 bolt with 373's. QUESTION: I have a set of 3782461 head with 202/160 valves. I would like to use the heads on my application, but no drilled accessory holes in the heads. Can these be drilled without complication? Would this be a good combo for what I'm building? Thanks for any input, even the ****-heads that will have something S/A to say. You crack me up! Thanks

 

I have seen a few drilled, but if you haven't invested a lot of money in them, you could sell them and buy a set of later style sportsman type heads and already have the bolt holes you need.

 

From past bad experience get rid of the gear drive. Honest you will hate it.

 

sell em to a restorer
you'll drill into the water jackets

 

Save the neat old heads for a neat old car....get some late model heads to put on the late model.

 

Use some vortec heads and this is totally off topic. PS You will hate that gear drive.

 

I run those heads on a similar, but higher performance SBC that I use for a back-up race motor in the Vette - for when I blow up the wilder motor - they work great. But I agree with the previous comment - unless you have a lot of money invested in them it is not worth trying to drill them. You don't have the flat bosses to drill into, which means you won't have a flat surface for the accessory brackets to rest on. There are plenty of SBC heads that flow as good as these heads that already have holes !