Originally Posted by 73DAD
The instruction sheets that shipped with them originally claimed they'd go to 4.600" actually, but I don't know anybody who's tried it.

I thought the later MP/World "megablocks" were the only ones that claimed they'd go out to 4.600"?

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax