'79-'85 MAZDA RX-7

...Higher Rear Gears Avail. for 1st gen RX-7s...
It has come to our attention that the 3.636 gears from a '79-'82 RWD 626 will fit the '79-'85 RX-7 rear. The 3.308 ring & pinion from an '82-'84 Diesel powered B-2000 / Ford Courier will fit as well (Thanks Randy). For '79-'83 RX-7s, it is a direct replacement. '84-'85 RX-7s use a larger dia. axle, but the side gears can be swapped, allowing use of the higher geared 3rd member in the '84-'85 RX-7s as well.


Commonly available parts recommended to be used with our kits...
Transmission mount - rubber......................NAPA PN# 620-1024

We now accept orders by phone or by e-mail. Orders are normally processed Monday thru Friday, but are often accepted on weekends as well when we are not gone racing.

The phone number for ordering and technical information is 360-391-1208.

Click on grannysspeedshop@verizon.net to send your order by e-mail. Please provide us with the year and model of your RX-7, along with the type of engine and transmission you are planning to use.

All orders will be sent U.S.Postal Service COD (USPS cod), unless prepayment is made to avoid the additional cod charges. The USPS accepts Cash, Check, or Money orders as payment.

All shipping charges will be additional to the listed price. We cannot give you the total for your shipment until we have processed the order for weight and your location, as shipping charges are based on both.

We ship items USPS Priority Mail, which is usually a 2 day service, and use the USPS delivery confirmation/tracking system on all orders.

All sales are final and we only provide sales credits for any return other than a warranty replacement. Returns must have an authorization, and a restocking fee applies to all these transactions. No warranty is implied or expressed for parts used in speed contests, competition or racing in any manner.

We do not take credit cards at this time, so these are the only two ordering options. All Canadian and International orders must be Prepaid. We cannot COD to any area other than the United States.

We appreciate your business and support.