i have an older elcamino rearend in my chevelle and was wanting to know if gears in my rearend will interchange with a newer fbodys 7.5. im sure the axle splines are probally different but the actual gears if they are similar. open to suggestions

 

This might be a dumb question, but what is keeping you from spending $120 on a set of new gears in the ratio of your choice? If you're going to do it, do it right, not with a 30 year old gear set....

 

The old gears will work even if they have 7.5 stamped on them and the new ones had 7.625 stamped on them.
I'd rather use those than a set of $120 new gears, where do you find gears for $120?

 

eBay.

 

Let me get this right. You have a late model Elco 7.5 in your 70 Chevelle ?? Wow. Never would have seen that comming.... If this is the case, then yes, the late model 7.5/7.625 gears will work as Kelly stated.


And Kelly....... what's wrong with gears that are 30 years old ?? I have 39 year old gears in my 12 bolt.

Damn twentysomethings'.

 

I said that. I'm not Kelly.

 

Just saying if you are going through the trouble of setting up a ring and pinion, might as well make the install as reliable as possible

 

You wanna fight about it?

 

Well I wouldn't get them off e-bay then. So if you got a new set from a vendor on here its more like $200.

 

Brand new motives are brand new motives no matter where they come from

 

I wouldn't trust anyone on e-bay. Way to many people gettin ripped off now days. It might say new gears & then you get a rock in a box delivered or some worn out gears. Not worth rollin the dice to me. If you gonna spend the money don't cheap out, just get them from a 100% reliable source.

 

Ok, but dont call me Sherly.

 

Fricken senile old people around here....

 

Does 14 years senior qualify for old ?? Remember, gray is actually a refinement.

 

Better gray than none at all. That's what my dad says

 

Yeah, you and Sherly both

 

yes i am running a newer elky rearend in my 70 chevelle. im on a budget and know some people that might have some used ones layin around out of a newer fbody

 

There are tons of S10's and S10 blazers in junkyards with 3.73 7.5/7.625 rears, you could maybe get a set from there.

 

oh yeah..i forgot about the s10's and blazers...cool thanks for bringing that up..i might go that route..i still havent opened it up yet but im pretty sure i snapped the pinion

 

I have done a couple gear swaps using Richmond, Motive and stock used gears from another F-body. The Richmonds always make noise, the Motives did a little bit but, the used stock GM gears were as quiet as the car they came out of. And I was always able to use the stock shims over again and hit the gear pattern and backlash dead on everytime. Nothing wrong with old, used gears.