Will this work ????

cdownie3 said

I have not checked to see if the heads are milled ,but they are 73 cc stock.

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WRONG , thats NHRA SPEC , 915's are more like 80cc , maybe 82 ??

eaglesguy1981j said

I dont see where you would get 9.5 since the 78 440s were only like 8.5ish. Are the closed chambers going to gain you a full point?

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Advertised might have been 8.5 but as delivered is lower . A 78 440 stock piston is more like .150 to .175 in the hole , there will be NO QUENCH whatsoever and putting on the 915s won't even raise the compression 1 point .