Just wondering what you guys think about running a stock 30 model A diff behind a 272 y block and a C4? Will it hold up for a while? It will be going into a channeled A coupe, but I need to start collecting the information for my build proposal (pain in the *** Australian laws!) Thanks Sam! Posted using the Full Custom H.A.M.B. App!
C'mon, ask your throttle foot that question ;~) Of course it would if you drive it as such. But will you? Posted using the Full Custom H.A.M.B. App!
haha thats a question which i cannot answer hahahha main reason i ask is because i have the diff already as it came with the car, if its a half decent option then i should just use it i guess
A neighbor had one with a SBC/TH350 & original axle, drove all over the place w/o problems. An A/T apparently doesn't need the strength a stick does. I remember seeing a row of Aspen/Volares in the 80s in a junkyard. The 226 slant 6 & stick cars had 8 1/4 axles & the 318/904 cars had 7 1/4 axles. The Y block shouldn't be stronger than his SBc or the 318, depending....
I don't think it will last. Back in the 60's my friend and I put an Olds j-2 engine in a '40 coupe. We got a week out of the stock rear.
The axles are the weak link ,but you will have to do open drive conversion also,maybe the cost of the axle conversion and the open drive and the radius rod set up will out do itself ,i have done an A rear with HRW axles but keeping it closed drive adapted back to a late all synchro 3 speed from a mustang with a T150 Jeep shift,,
there are a few companies who make adaptors so theres a few to choose from http://www.ford-y-block.com/c4adapt.htm - $635 http://www.transmissionadapters.com/ford_y_block.htm - $850 flat-o also makes one... i also know a guy who owns a transmission shop and regularly makes his own adapters for all sorts of different combinations for a lot of different engines, so getting him to adapt it is my first option thanks for all the info on the stock diff, i think i will just go with something new from a hilux or maybe a centura or maverick diff if i can find one
oh haha umm i will probably see the guy i know first and see what he will charge and then go from there
I think it will work for a good while if you make sure the banjo is in real good condition and the axles fit the hubs and keys really, really well. I fit my hubs to the axles using valve grinding compound, so the tapers match each other as tight as possible. I think the C4 gives you some additional cushion but you still have to take it pretty easy. My '40 has a 283/stock '40 trans and rear and gets driven a LOT. But if you're not experienced with banjo rears you will be before too long.
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