59AB heads on a 8BA block

[TomT/Williamsburg]

Thanks everyone - I'm no longer ignorant - at least in that regard!

 

[rick r]

why? now you can't run modern thermostats.

 

[Ol' Ron]

Yes I feel better and read most of the threads related to engines. I'm pleased to find that there is plenty pf expert advice here so I don't have to try and answer every thread, just the ones that ruffle my feathers. Your in good hands.

 

[flatjack9]

why? now you can't run modern thermostats.

What does that mean?

 

[oldskool]

HAMB to the rescue.When I did mine, I used allen head pipe plugs and JB Weld for sealant. That was 10 years ago, Still working fine. Here's some info.
http://www.jalopyjournal.com/forum/showthread.php?t=231790&highlight=install+59ab+heads+on+an+8ba I used a 1/4-20 allen socket head cap screw to hold the distributer in place and a spacer to keep it the same height as it was when using the stock heads. The spacer maintains the proper "mesh" of the the dist. gear. Be sure to not let chips drop down into the timing cover when drilling and tapping.

19forty,where is spacer placed and what does it look like..

 

[sturgis 39]

When doing a swap Like this I like to use the 81A "A" head. This has a smaller combustion chamber. Mill the head for .050" piston to head clearance. Now you'll have to check for valve iinterferance between the valve and head. This can be cleared up with a die grinder. Almost a point in CR can be gained tis way.

Ol' Ron

Good to see your smiling face again. Hope you are doing ok.

 

[Mr 42]

Im runnin 81 heads and modern thermostats, no problem.

Had to clear a bit for the valves.

 

[19Fordy]

19forty,where is spacer placed and what does it look like..

The spacer is an aluminum spacer ring that sets on top of the cam cover . The distributor goes thru it and raises the distributor to the same height it was when using the stock 8BA heads. You can see it on the left edge of the photo with the black line going across it. It is 1/4 in. thick. You will have to make one. My distributor is a Mallory.

 

[Bluebell]

Please excuse my ignorance but what are cup plugs? Pic? Source? Thanks ...

Otherwise know as; Welch plugs, Core plugs, Frost plugs.
Google Welch plugs for images/ info