Thread: What about domed pistons???

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I see a mis-match here. With flat-top pistons, 76 cc heads and assuming zero deck and a 0.039" gasket, your compression ratio will be 9.05:1. If you didn't pay attention to the deck height when you built the motor, I'm betting the piston is somewhere between 0.020" and 0.040" down in the bore at TDC. 0.040" in the hole would put your compression ratio at 8.3:1 This cam (rough idle, 2,800 to 6,000) is designed to work with 9.5 up to 11.0 to 1 and will bleed off most of your already low compression, resulting in poor power. In my humble opinion, you've started with the wrong heads for what you want to do (too much volume).

What if i were to run domed pistons to up the compression. what kinda is reasonable to go with and how big of a dome would i need. can u run them with stock rods...

sorry heres the origionally post i was refering to...

k... this is what i have so far. I have a 1977 350 chevy 4 bolt main crane cam and lifters, holly strip dominator intake, carter 750 cfm carb, hedman ceramic headers, gear drive, mallory HEI and wires and chevy 333882 heads with 202 valves and 372 gears with a borg warner T5 5 speed. I have all the components just havent intalled them yet.. will these componts work together well..any suggestions...What kinda hp approx???...I drive this car to shows and the strip.








Cam Specs

http://dab7.cranecams.com/SpecCard/...d.asp?PN=110551

Has anyone used these???

anybody??

any input at all.....

I've had a hell of a time finding a good set of small cc heads to bring up the compression... i've been looking for a set of vortec heads and the only set i was able to find any buy(without buying the whole motor) were 305 vortec and i wanted 350vortecs... I'm trying to do this right but I dont have whole lot of $$$ to play with..i can get heads rebuilt cheaply its finding them...and shipping to canada on ebay is alomost as much as the heads...

I dont know the deck height the stock 333882 heads are still on the car in storage and i wanna get everything together before i start ripping it appart...the motor is a 1977 350 4 bolt main thats all i know....