4x4high, other engine gurus!

[blazin_blazer]

can you crunch some #'s and give me specs for a custom cam grind, that will be a lower rpm/torquey motor that will have a ''radical'' cam lope @ idle?

its a stock rebuild, iron intake, rams horn exhaust..compression: my pistons say 8:1 w/76 cc head, 8.8:1 w/64cc's,so taking into account head gasket cc's, less than 8:1, not acceptable...so how much can i have the head surfaced to help bring compression up to 8.5-9to1? or is it to much material to remove to effect the compression much?

 

[Thunder]

can you crunch some #'s and give me specs for a custom cam grind, that will be a lower rpm/torquey motor that will have a ''radical'' cam lope @ idle?

its a stock rebuild, iron intake, rams horn exhaust..compression: my pistons say 8:1 w/76 cc head, 8.8:1 w/64cc's,so taking into account head gasket cc's, less than 8:1, not acceptable...so how much can i have the head surfaced to help bring compression up to 8.5-9to1? or is it to much material to remove to effect the compression much?

I'll just let 4x4 high answer this one . I am at a loss for words.......

 

[4X4HIGH]

can you crunch some #'s and give me specs for a custom cam grind, that will be a lower rpm/torquey motor that will have a ''radical'' cam lope @ idle?

its a stock rebuild, iron intake, rams horn exhaust..compression: my pistons say 8:1 w/76 cc head, 8.8:1 w/64cc's,so taking into account head gasket cc's, less than 8:1, not acceptable...so how much can i have the head surfaced to help bring compression up to 8.5-9to1? or is it to much material to remove to effect the compression much?

You're asking to achieve two different things from the same part. It's not going to happen. Lopey cams make HP up high at the expense of low end torque. This is like asking for a warranty on a race engine, it just isn't going to happen.

You DO NOT want to remove material from the deck of the head to try and increase compression ratio. You need to either change the heads to a smaller chambered head or change the pistons to something that will achieve the results you want for compression ratio with the current heads you have.

 

[iwaxmyjimmy]

throw a blower on your got the right compression ratio to run high boost lol jk. but yeah you can mechine heads or the block that much. and if you did it would take alot of custom work, push rods, fixing all the water jackets, oil gallies to. just more fresible(sp?) to run a smaller chamber or different pistons. alot cheaper too.

 

[SoCal'75]

If youre looking for a bit more compression out of your stock engine, concider the World Product SR Torquer 305 heads. They have 58cc chambers and 1.94x1.50 valves and .500" thick deck surface.
As for the camshaft, if youre looking for torque...you want more lift with a short duration (under 220* at .050" lift) CompCams have really nice 4x4 cams. I think that changing the heads is going to be the cheapest way to go. Once you figure in the cost of rings and new pistons,having the machine shop press off/on the pistons,you are going to be right at the same money. Good Luck.
-Lance