Aluminum Head Question

Do all the TA and Bulldog Aluminum heads have the added head bolt hole and is it required that the block be drilled for it to use these heads? I have the engine in the car and would like to put aluminum heads on it. Mike D.

 

I have aluminum Stage 1 heads from TA, the street eliminators. Although you can add the extra holes to the heads, they are not drilled in the heads, and they look 100% stock except for provisions to make those holes.

You will find that you need 9/16" 12 point nuts for 4 of your head studs if you use studs however- the outbaord most two on each head

here's a pic

 

Ahhhh, painted to fool all the ricers who peak under the hood! :TU:

 

:grin: Actaully painted red because keeping raw aluminum clean is a pain in the @ss

I talked to some ricers once. they asked what "mods" I'd done to the car. I said, well, it's got a 455 bored out to 462 (should have said "7.5 litre"), 10:1 pistons, a torque cam, 3.31:1 posi, TH350 with a shift kit, factory ram air induction, 1 and 7/8" primary headers, street/strip distributor, 9mm wires and a 2.5" exhaust

No kidding, one of them looked mighty confused after that and said, "What kind of stereo do you have?"

 

I can imagine the expression if you said 8-track

-Bob Cunningham

 

I know this is an old post. When the extra bolts/studs are drilled. How many threads are existing and useable for the header bolts and what bolts are used?

 

Thanks Larry, I had read that and just wondered if anyone knew how much they need shortened or how long the bolts were after shortening. Trying to save a little time while making some improvement on this quick overhaul to make Oct 28 deadline.