I've got a 1970 396/402
cast# 3969854
date code: A 7 70

With #063 heads dated March 25, 1969 ( C 25 9 ).

The block appears to be 4-bolt based on the fittings machined into the block above the oil filter housing. I'll confirm this soon with a scope through the drain hole. My research suggests if it is a 4-bolt, these heads are wrong. No worries as a 2-bolt should do fine.

Edel. Performer II+ intake
MSD EFI TBI
currently with stock BBC exhaust manifolds into dual 3" pipes, no cats. Will be fitting long tube headers post refresh.
700r
stock converter w/lockup
3.73 posi

3600 pound vehicle

I'm going to remove the heads and have them freshened/worked at a local machine shop ( need some pointers here ), remove and replace the stock cam with a hyd roller unit that will fit with what I'm after with this engine:

o street use mostly
o need vacuum for EFI and brakes
o loads of low-rpm torque
o operating range of 1500 to 5500
o basically a stop light to stop light fighter
o ...and highway cruiser

This motor runs strong with no issues so I'm not worried about the bottom end. I'd like to "wake it up" via the above.

After lots of reading on this site ( through the last 50 pages of posts ) I've decided to just run the 063 closed chamber heads after some useful and appropriate machine work ( need pointers here ) and update the cam to a roller. Likely will need to add some stall too, but I'll wait for the boards opinion on that.

With my goals and hardware in mind, can you guys help me determine the best course of action on my 063 heads ( assume for now they're completely stock ) and give me some options for the cam? Looking to pull as much grunt out of this BB as possible while keeping it streetable.

I have a set of 781s too, but don't think they're in the running without also swapping the pistons, which I don't want to mess with.

thanks much,

-unix