Quote:
Originally Posted by Tom Vaught
If you do the math on the Wallace racing calculator site, Milt would have had to bore the 428 block out from 4.125" to 4.230", a bore job of .105" which is quite a stretch for a 67-69 428 block to take but possible I guess.. I still go by the 4.375" crank number I was told years ago. Why would Milt have been afraid to turn the engine over 6000 rpm with a factory 4.210" crank and good parts? The 455 HO guys with 4.210" cranks had Lots of Experience at that rpm.
Tom Vaught
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Hi Tom,
Interesting that Milt either cant remember the true stroke of the motor or stretched the truth a little (no pun intended) to downsize that actual size of the motor. I can only go by what the book says.
-Don
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1966 GTO
1966 421-10.1-1 comp-Race Tec 23cc Pistons
KRE Tri-Power
KRE 65cc Aluminum Heads
XE274 cam by Comp Cams
DUR 230 Int 236 Exh @.050 - 110 LSA
LIFT .491" Int .491" Exh
Tri-Y-Headers by Tribal Tubes w/ Goerlich Mufflers
1966 Muncie Wide Ratio 4-Speed
1968-72 Chevy 12 Bolt Rear End w/ 3.73 rear gears
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