If your +.040 bottom end is good with no metal in oil, good oil pressure, put on aluminum heads, intake. Upgrade your cam while at it
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1963 Cat SD Clone (old school) streeter
1964 GTO post coupe, tripower, 4speed (build)
1965 GTO 389 tripower, 4 speed, driver
1966 GTO dragcar
1966 GTO Tri power, 4speed, barn find
1966 GTO Ragtop
1969 GTO Judge RA lll, auto
1970 GP SSJ
1970 GTO barn find..TLB…390 horse?….yeh, 390
1973 Grand Safari wagon, 700hp stoplight sleeper
525ci DCI & 609ci LM V head builds
Factory stock oval track car
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