" From: "Swygert, Francis G MSgt 436 CES/CECM" <Francis.Swygert3@xxxxxxxxxxxx> " " From: andrew hay <adh@xxxxxxxxxxxxxxxxx> " " otoh 290s and 304s were teamed with aluminum warners, but again it " would be wise to take a matching tranny and only use the '61 tt " adapter. and not to press luck with a bigger engine. " ---------------------------- " " Yes, but the V-8 trannys were M-4x series, and only with 2V engines. 4V " engines got M-11s (290, there wasn't a factory 304/4V, unless used by " Jeep). The M-4x series uses a different valve body and liquid cooling. " Some of the other internals (most?) are the same as the M-3x, but some " are definitely heavier. I think (not sure without looking in the books!) " that the M-4x uses four planetary gear and the M-3x uses three in the " gearbox. all true, and only reinforces the value of adapting the m4x tranny to the '61 tt if going with a v8. i have sketchy noted on beefing the aluminum series with bw51 and bw65 parts, but that's a whole other issue. i don't know of any jeep 304/4v. " In case you didn't catch it in a previous post, all 67+ big cars use the " AMC20 with the six, just as you remembered! Most did in 66 -- there was " an obscure fleet option 199 equipped big car that used an AMC15. I'll " have to look at the production chart and see how many were made... my only real experience with big cars was my '67 232 marlin. i wasn't sure how far back before that i6/amc20 use went. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list