Dave I know your at a crossroads with those heads but my 2 cents is keep what you have. You'll find the missing link to each your goals. As I been told having a street strip car I'm going to have to sacrifice something, whether is drivablity or performance. FYI a friend went 10.05 in the 1/4 and 6.25 in the 1/8th with those heads in a strictly race car. It's. a stock stroke 440

Plus the extra coins can be put towards your hemi

Last edited by 67mprfan; 03/03/22 10:14 PM. Reason: Added information
71 demon stock stroke 440/indy ez-1 running 10.10 @ 132.14 mph in the 1/4 and 6.36 @ 107.46 mph in the 1/8 not in the same weekend but It did it then I sold it.
67 Belvedere that worked it's way in the 10's