924Board.org

[mcadam1121]

ok lets say you have the old 4spd in your 924 and you want to put a small block chevy in it
how long do you think it would last
i figure it wouldn't last long

ok so lets say you do the v8 swap and it destroys the 4spd
i hear that the 5spd from a 944 would and could handle a v8
but i like six gears better then 5 so would a 911 6spd also swap in
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The Ginger
77 porsche 924 Martini

[alexvex]

You would want a 5spd from a 944 Turbo or a 6spd from a 968. 968 requires a little work but it's not too bad. I doubt a normal 944 tranny would last long with the torque of a V8...depends on how you drive though.
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--Alex--
1992 Porsche 968 (VW 2.5L I5 Turbo swap in the works)
1995 Audi 90 Quattro Sport (4.2L V8 Swap)
2010 Touareg TDI
Past Pcars: 80 931, 87 924S, 87 951

[flyguy]

Would the 944 tranny hold up well to the torque in a V6 though? or what even the 924? I read that the swap of a bigger engine into the 924 is a waste of time cause there is too much torque for the torque tube and tranny to withstand.

[tuurbo]

I think it should take something up to 275 hp...
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1980 924 turbo, MSD, Meth. Inj, otherwise stock.

[morghen]

Steve was RACING his ~400HP 924 on a 944 gearbox....what the hell are you guys talking about? Simon also raced his SC 924 wich made alot of power and torque...Raceboy also raced his 245HP 924 on a NA gearbox if i recall corectly...if not..must have been a 944 unit.
The 968 TS engine has 500Nm of torque and it was designed for racing.
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https://www.the924.com

[flyguy]

I was just refering to the 1977 924 NA. Not with the SC.

[fiat22turbo]

The stock non-turbo transmission is actually fairly strong from what I've read here. The torque tube tends to get weak upwards of 220hp. However, the 944 parts more or less swap in and provide upwards of 400hp capability (at reduced longevity)

The point is that a 6-speed won't help much with a typical V8 since the engine's power band is generally very wide. This is why the 6-speeds used in Camaro's, GTO's and Corvette's tend to be double overdrives. On the smaller or force inducted engines where the power band tends to be slightly more narrow and peaky, more gears simply helps keep the engine in the powerband and allows for quicker acceleration.

The point is, use the number of gears that best matches the power band of your car and your driving style. Many V8s simply don't need the extra gears, even the 3.2L V8 in my buddy's Ferrari can lope around at 35mph in 5th gear and it will still out accelerate most cars on the street.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[mcadam1121]

so what ur saying is that the 944 5spd would be better then a six speed
ok thanks
i figure a 5spd will be cheaper than the six anyway
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The Ginger
77 porsche 924 Martini

[ideola]

Your best bet, IMO, is a 5-speed from a 951 (944 turbo). Should be direct bolt-in with respect to the chassis, will be the best match of gearing to a V8, and capable of handling the torque you'll be making. Even better would be one with an LSD, but be prepared to shell out $800-$1600 depending on mileage and condition.
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erstwhile owner of just about every 924 variant ever made

[v8carreragts]

Yes, the 951 5 spd is the best choice. The best is the turbo S because the shafts and gears are shot peened making it a little stronger. The 951 has a slightly larger ring gear that has wider teeth (along with the pinion) and has a larger front pinion bearing.

Insidently, the 944 S2 transaxle is identical to the 951 except for the ring and pinion ratio. It is 3.875 vs the earlier 3.88. The ring gear is also larger in diameter than the early model.

[mcadam1121]

So if I found a 951 tranny and it wasn't a LSD could I get away with welding the spider gears or does any 1 make a spool or mini spool
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The Ginger
77 porsche 924 Martini

[alexvex]

Good thread on welding the diff: http://forums.pelicanparts.com/showthread.php?t=355981&highlight=spool


Couple of LSD 951 transmissions for sale:

http://forums.pelicanparts.com/showthread.php?t=446248

http://forums.pelicanparts.com/showthread.php?t=444668

PM caster951 on Rennlist, he's got a LSD tranny with 93k for $1500 shipped

ausgeflippt951 on Rennlist also has one for sale, PM him for price.

http://cgi.ebay.com/ebaymotors/_Car-Truck-Parts-Accessories__89-Porsche-944-951-Turbo-S-manual-LSD-transmission_W0QQitemZ220331165171QQadiZ2865QQadnZCarQ20Q26Q20TruckQ20PartsQ20Q26Q20AccessoriesQQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item220331165171&_trksid=p4506.c0.m245&_trkparms=72%3A543|65%3A12|39%3A1|240%3A1318

http://cgi.ebay.com/ebaymotors/_Car-Truck-Parts-Accessories__Porsche-944-Turbo-S-Transaxle-Transmission-LSD_W0QQitemZ120313872850QQadiZ2865QQadnZCarQ20Q26Q20TruckQ20PartsQ20Q26Q20AccessoriesQQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?_trksid=p4506.m20.l1116
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--Alex--
1992 Porsche 968 (VW 2.5L I5 Turbo swap in the works)
1995 Audi 90 Quattro Sport (4.2L V8 Swap)
2010 Touareg TDI
Past Pcars: 80 931, 87 924S, 87 951

[fiat22turbo]

Provided you're a good driver, I don't know that a LSD is absolutely needed, it does make the car easier to drive depending on the conditions involved. The key is knowing how to drive and how to tune the chassis to reduce the tendency to spin the tire.

Welding a differential tends to make a car that is only good for point and shoot style driving. If you want something like that, buy a Mustang or Camaro and save yourself a bunch of work.

At the very least, a phantom grip style limited slip conversion would be better than nothing and easier to drive than a welded differential. They do have their limitations of course.

http://www.porschehybrids.com/ has all of the V8 conversion information you could possibly want and most of these questions have been answered several times over there.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[mcadam1121]

Ok if and when I put the 944 tranny in my 924 will the stock axle shafts bolt up or will I need to get 944 shafts
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The Ginger
77 porsche 924 Martini

[Joes924Racer]

I like the welded 944 article on pelican parts..
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.