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Re: 1986 454, Square or Oval Port Head?
Longhair forgot to mention oil dilution as also being a problem. You could get yourself a set of "open chamber heads" with 2.5" intake valves and 2" exhaust valves. Then you could use the intake, LOL. You'll hurt MPG though. I built one back in the 70's. All the goodies.600 horse at the rear wheels! Pick the front end of a 69 Chevelle 3 feet in the air w\14" wide slicks. Best track time was 9.9 sec at 148 MPH. Rear was a Brown spool and trans was a close ratio Muncie w\a vertigate shifter. A PITA to drive and really tough to get around corners, LOL. Wish I was that young and dumb again. Want a beasty? I'll build you one. jim
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1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shot  Jim or Paladin whichever you choose.
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