I’m bolting my 240’s on my .040 over flat top piston 440 with a purple shaft .509 flat tappet cam and an Edelbrock performer RPM intake, 800 CFM carb and TTI 1 7/8 headers and Comp magnum roller rockers. The motor ran pretty good with the factory heads/intake/exhaust manifolds but I believe this will seriously wake it up. I built the engine 3 years ago and put 2,000 miles on it. Got tired of bone stock. I weighed my70 GTX prior to starting, it weighed 3,640 lbs. I’m hoping it’s down to 3,400 lbs. I’ll let y’all know how it runs. Compression should come in at 9.7:1. I was hoping a little more but the pistons sit down in the hole more than I remember when I built it. I can’t imagine what the compression was with the stock heads.
