Click Here for 1st gen Ford V-8 Instructions On-line


FORD 289/302/5.0/351W V-8 into '79-'85 MAZDA RX-7
Parts, Prices & Infomation


Brad Bergholdt's California smog legal Ford 5.0/AOD powered '83 RX-7


The engine/transmission are from a low mile '89 Lincoln MK-7, which has the proper oil pan and factory exhaust headers that fit perfectly. Total investment was 5 or 6 Fridays of work, and a tad over $1000. dollars. The car is CA smog legal, and gets better fuel mileage than it did when it was rotary powered. Brad recently sent us this note: "I've put almost 4000 miles on the car with no trouble whatsover. It gets 19MPG in town and 26MPG on the road. Zero-60 times are under 6 seconds, would be a lot better with improved rear tires.-Brad Bergholdt".
By the way, Brad is the Automotive Technology Instructor at Evergreen Valley College in San Jose. For a write-up on the installation details of Brad's conversion, including wiring, CLICK HERE.

NEWS...

...1st gen. Basic Kit for 289-302-351W Fords...
This new addition allows bolt-in installation of the lite-weight 5.0, requires NO crossmember modification, yet still fits under the hood !!! The secret is simply un-bolting the stock front crossmember (6 bolts), then REVERSING it 180 degrees and re-installing it. This causes the center portion that interferes with the oil pan to swing to the rear instead of the front, allowing a stock double sump late Mustang 5.0 pan to straddle both the crossmember AND steering linkage!!! A short oil filter (or 90 degree adapter) is required, but the low placement buys you a lot of room under the hood for air cleaners and such. Lots of room for headers too. With this kit, the EFI manifold from the Mustang 5.0 will clear the stock 1st gen RX-7 hood.
(NOTE: The GSL-SE models use a crossmember that requires modification, as the engine mounts for it's fuel injected 13B engine are about 3/4" farther ahead than those for the 12A (carbureted) engines. When the crossmember is reversed, the additional 3/4" is in the rearward direction, so interferance with the steering linkage can be expected. The easiest solution, if you are building Ford V-8 powered GSL-SE, is to simply use a reversed crossmember from a 12A powered RX-7 ).

...351W oil pan...
If you would like to install a 351W in your 2nd gen, you will need an oil pan from a 351W equipped Crown Victoria (the police car Crown Vics came w/ the 351W).

...Wiring information for injected engines...
'87 Mustang (speed density) harness
'88-'93 Mustang SEFI harness...(typical)
'95 Mustang (MAF) harness...(last year for the 5.0)
More to come....


BASIC KITS...Just what you need to get your V-8 engine & transmission into place.
Easy bolt-in installation. No cutting or welding required.
Just choose one below that fits your requirements...

Basic Kit Only- Includes...

Instructions
(2) side mount adapters,
transmission crossmember (choice of C4/AOD/T5)
(double sump late Mustang oil pan is required)......185.00


BASIC KIT w/ DRIVESHAFT
Special package deal pricing........................490.00


Deluxe Kits...
Deluxe package pricing to save both time and money.
Just choose a Deluxe Kit below that fits your requirements...


DELUXE KIT
includes...
Instructions
(2) Engine Side Brackets
Transmission Bracket of your choice
Rubber Engine Mount Set
Aluminum Radiator and Brackets
Side Seal Set
Temp Sender Adapter Bushing
Free Tachometer Re-calibration
Driveshaft w/ slip yoke............................1225.00




Individual Parts Available...
These parts are available individually to custom compliment your Basic Kit...



ALUMINUM RADIATOR KIT,
22x19x3,equal to 5 row copper/brass, good for 480 HP.
Radiator and brackets only - Ford outlets / double-pass
both outlets on driver's side.......................520.00
Aluminum side panel seals for radiator (2)...........45.00


DRIVESHAFT Custom Balanced Shaft with u-joints
(does not include transmission output slip yoke)
Specify transmission and companion flange type
Steel(new components)...............................335.00
Aluminum (new components)...........................455.00
Rear Flange only- '83-'85 models.....................75.00
Slip Yoke- 28 spline (C4/AOD/T-5)....................80.00


TACHOMETER RECALIBRATION
we have some re-cal'd tachs in stock,
available on an exchange basis.......................65.00 + return shipping


TEMP. SENDER ADAPTER BUSHING adapts stock Mazda
temp. guage and sender to Ford.......................12.00


CLUTCH MASTER CYLINDER
1" bore for use with the T-5 and pull slave..........90.00


PULL SLAVE simulates the pull action of the
Mustang style clutch cable. Requires a larger 1" bore
clutch master cylinder (listed above)................75.00


AC CONDENSOR SIDE SEAL SET
relocates the stock RX-7 condensor ahead of the
round crossmember, using the stock condensor mounting
points and drier plumbing............................45.00

BASIC KIT COMPONENTS
Engine Side Bracket set (2).........................130.00
Transmission Crossmember Only (specify trans type)...55.00


DOUBLE SUMP FOX BODY OIL PAN
comes with special pick-up tube.....................215.00


TRANSMISSION COOLER attaches to radiator core,
5"x14"x3/4" 4 pass...................................45.00

...Click Here for Ordering Information...


DERRICK JOHNSON'S V-8 POWERED 1st gen....

...the wheels are ROH Snypers, which fit the 4 on 110mm 1st gen wheel pattern.

NEWS...
...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.


frequently asked questions....

...What engines can I use?
Most any small block 260-289-302-351W Ford will work. The carbureted models make for an easier conversion, but the 5.0 EFI engines will fit under the hood too.

...Do I have to use an electric fan?
No. A 15" mechanical fan will fit and is recommended for use with the Ford conversions. If you want to go electric, the 2 spd fan from a '94-'97 T-Bird draws 31 amps on high, and is the most powerful automotive sized electric fan that we know of.

...Can I use a manual transmission?
Sure. The T-5 from a Mustang application is fairly easy install. The shifter is going to be a bit farther back than the stock 1st gen RX-7 though, and will require modification to the stick to come up thru the stock plastic and boot.
The pull style clutch linkage design used by the Mustangs can be converted for use with the RX-7's hydraulic design by using a "pull style" hydraulic slave cylinder, such as Wilwood's PN# 260-1333. They use a single threaded stud as an anchor, requiring only a hole in a simple angle iron bracket for mounting.

...How fast will my car be?
Quickness of the car will be greatly improved, as the V-8 torque is about double that of the rotary engine. Overall top speed depends on the transmission selection and the RPM range of the engine. Expect a stock V-8 (with good tires) to produce 13-14 sec. 1/4 mi times.



Commonly available parts recommended to be used with our kits...

Engine Mounts (2) - rubber.......................NAPA PN# 602-1091

Transmission mount - rubber......................NAPA PN# 620-1040


our kits are jig welded and bolt right in....
...no cutting or welding required !!!


TRANSMISSION OPTIONS
AOD...T-5