[67Lemons]

I’m building a 455 with 7K3 heads, TRW flat tops and RA manifolds for my ‘72. The car is a cruiser with a 3.23 rear and M20. I know the pistons aren’t ideal, according to Butler’s compression calculator I’ll barely be at 9.0:1, I’m hoping the shop can shave a little off the heads to bump it up. I’m not a position to replace the pistons since it’s a simple refresh to an already built short block so I’m working with what I have.

I sent a cam recommendation into Butler and they suggested their 8024SP which seems like a really popular grind for them but I’ve also heard great things about the Stump Puller which has a little more lift from the specs I’ve seen. So I’m at a crossroads at this point and need to order a cam soon so I can get this build done before spring.

Edit- Butler grind (HR) (Std Firing Order/ Std Journals) 282/288, 230/236, .510/.521, 112 LS with 1.5 ratio rockers
SD Stump Puller 230/236 dur @ .050" lift .590"/.592" lift with 1.52 ratio rockers 112 lobe sep

Any thoughts either way from the fine folks at PY?