Cam advice or input

burkjosw said
K

Kb240 I believe was the part number , i bought them almost 10 years ago, I have come to the conclusion that they are not going to get me to the compression ratio I want, I'd like to reach 10.5 or 11 to 1 , not going to be a race car by any means just a really fun driver, I'm considering decking the block and or buying some domed pistons for it, just want to make sure what i end up buying works well together I don't mind buying new stuff and saving what I have for another project, I like the lope , around 450hp shouldnot be to hard to get

If those pistons are domed, rather than dished ( that's how I read the specs) you should end up with about 10.69 with a .027 cometic head gasket and a true 0 deck. you could deck more or machine the heads if you need more compression. Pistons would be down the hole .024 so quench would be .051. If you decked .010 for .041 quench you would be at 11:1. Hopefully my math is right on all this.... You would really need to measure everything including P-V clearance and verify quench.

You definitely need a healthy cam for that compression at least 230 degrees @ .050 straight up. Personally I would get a custom cam at that point, that would be optimal.

My 383 is a true 9:1 (custom JE pistons), 906 heads (unported but good valve grind with Ferrea valves) 1.6 iron rockers, performer RPM intake, TTI headers and a small custom roller by Mike Jones, 217, 225 @ .050 with .340 lift 109 lobe separation in at 2 degrees advanced. Idles with 17" vacuum and makes 400 HP @ 5200 and 436 Ft/LBS @ 4300 with over 400 ft/lbs from 3000-5100. This is on a conservative dyno.

Garth