273 302 318 340 build

Steve, why not use the heads from the 67 273, they should be the 920 head with the small chambers... The book says that they are 57 cc, but mine measure 63... They are the smallest combustion chambers that you can use on an la head as they are closed chamber... We're putting a set of them on our 72 318 for the kid's challenger... They raise the compression from 7.6 with 360 heads to 8.6 with the thinner .040" fel pro gasket....

Then pop in a set of Rhoades lifters with your cam, and you should have some good low end grunt...

Here's some pictures of our set that we had our head guy go through and port, install hardened seats, and install 360 valves 1.88" intake and 1.6" exhaust...

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