[Keithc8]

If you would like to pick up about 60 to 70HP over the heads thatyou have these would be great for you. We would need to use a 2.09/1.66 valve size for that bore size engine. You might have to do somehting different with the pushrods since you do not have the adjustable rockers or go to adjustable rockers. Untill this was checked you would not know if you would need to do this or not.
We build the heads for each customers needs. We would set the springs up to match your camshaft.

Thanks, Keith