3.0 to 3.6

[SWoolley]

Im currently converting my 83 sc to a widebody. Im looking into swapping my 3.0 to a 3.6 or a 3.2. Can the 915 handle the power and is it compatible?

[Brando]

The 915 can handle a 3.2 without issue. If the 914 isn't from an early Carrera you'll have to notch it for the Speed/Reference sensors. For a 3.6 it is recommended to use a G50 for all the added torque. Or spend the cash to beef up the 915.

[Joe Bob]

Good idea to do some interior beefup. WEVO has some good stuff.

[SWoolley]

Looking at adding 18s and of course bigger rubber to complete the widebody look. Any recommended suspension upgrades?

[uwanna]

Originally Posted by SWoolley

Im currently converting my 83 sc to a widebody. Im looking into swapping my 3.0 to a 3.6 or a 3.2. Can the 915 handle the power and is it compatible?

I put a 3.6 into my '80SC back in 1992. I used an '85 915/73 trans (larger axles & CV's). Have driven it these 19 odd years with absolutely no problems. Now, I do use it primarily as a weekend driver, but drive in a rather spirited manner. Perhaps if you are planning on a lot of track/DE use, beef-up mods may be necessary(and expensive), but for a daily driver, I think a later 915 is adequate. There are many folks on this forum with highly modified earlier motors putting out more power than a stock 3.6 that are perfectly happy using a 915. Just my $.02

[Porsche84]

I've had a 915(84) with a 3.6 for about 10 years. I did beef it up with the single "turbo" retaining ring. I run 85-86 drive flanges and axles. This is a track only car so lots of power to the tranny. I put a Varioram 3.6 in a 74 and the input shaft broke. Porsche improved the design in 80 or 81 and these hold up well.