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Registered
Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,949
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6:29 diff gear 915....how strong?
How strong would a 6:29 gear be? Anyone know what these came in front of? I'd have thought a 2.0 if it obviously wasn't for the same years. It's said to be a one year option and one that I haven't heard of yet.
Thats like a 4.88 gear over the more common 3.9 or 4.4 gears. This would make one short box, but for ax or hill climb in a 2.0-2.2 could this be the hot ticket? Or is this the box out of the late 912's, its my hunch?
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Luke S. 72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8,03 900 rwhp 996TT |
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01-04-2007, 09:14 PM
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Join Date: Dec 1999
Location: TX USA
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The 6:29 ring and pinion set was for hill climbs in 901/902/911/904/914 transaxles ... not for 915s!
Check the gear charts I posted in the following thread: 901/13 gear question
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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01-04-2007, 10:43 PM
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Join Date: Jul 2000
Location: So. Calif.
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My car had a 5-speed with a 6:29 R&P for a few years. It's listed in one of John's charts as a 902/16 gearbox. I happened on it to upgrade the factory-equipped 901-4-speed. It had the following gears: A, GA, O, U and Z
The fifth gear ratio, Z, is the highest available, yet I was buzzing the engine (stock 911T at the time) at 4000 rpm @ 60mph. First gear was a stump puller, good for first/second gear domination over 2 liter Ss. Thereafter, it was no contest ... for them. Sherwood |
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01-04-2007, 11:37 PM
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drag racing the short bus
Join Date: May 2002
Location: Location, Location...
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But Sherwood, was it a fast buzz to 60?
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01-04-2007, 11:47 PM
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In reality, more like a fast buzz to 40 mph.
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01-05-2007, 12:00 AM
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Location: UK
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I have used a 6:29 in a gravel rally (901 box) car for some time and it has stood up reasonably well. It does 'clunk' on slow corners at low speed and I guess that this is because it doesn't have enough correction on the pinion teeth to maintain some strength but other than that it has stood up quite well.
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01-05-2007, 02:18 AM
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Join Date: Apr 2003
Location: Terre Haute, IN
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Thanks for clearing that up and for the threads that will be read with interest!
Warren, its been said before, your a great asset to the Porsche community and this site. When/If this forum shuts down after Wayne, the Porsche community will loose.
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Luke S. 72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8,03 900 rwhp 996TT Last edited by Lukesportsman; 01-05-2007 at 06:08 AM.. |
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01-05-2007, 05:40 AM
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