Current combo is a 10-1 505 with box stock stealth heads and comp xe hydraulic flat tappet 240/246 507/510 110 and 850 carb. Assuming I wanted to keep this cam but open to the idea of changing heads to gain more power (provided the gains would be fairly substantial)....Which heads would you recommend? It's a street car with a 4 speed 3.55's.
Just in the idea phase and no ideas are bad ones right now
Thanks!
That's close to the 505 combination in my Coronet. 440 source kit with 17cc dished pistons. My stealth heads have been slightly ported, cleaned-up, and multi-angle valve job and now flow a true 290+ cfm with pretty good lower lift flow numbers. They can be ported even more, but I'm running a mild Hydraulic roller cam, Comp XR286HR-10, with HS 1.6:1 rocker arms.
I bought the Trick Flow 240s (TFS-6161T784-C00) for another 505 engine. They are pretty nice, and flowed as advertised out of the box. They recommend a slightly different version of the Harlan Sharpe rocker arms S70016KE, but I haven't compared the two sets to see what the difference is? The smaller chamber would raise your compression ratio also. For this new 505, I am using the 27cc dish pistons to keep compression down for junk gas, but using a slightly larger solid roller cam, Lunati Voodoo 40230732LK, 243/249 @ 0.050".
If your looking to build a wilder, higher HP engine, then start with the larger Max Wedge sized port heads (Trick Flow 270) and intake, and get a larger cam.
