Porsche Gear Ratios

[blue4400]

Thinking about installing porsche tranny?

What is the stock gear ratios for the 901, 915, and the 914 tranny?

How good are thses trannies, will they hold 300hp?

Thanks

[MX67]

Here's gearbox list and ratios.

Hope it will help :)

Porsche 911 - gearboxes
Year Type of gerbx First Secc. Third Fourth Fifth Diff
1965 901/02 3,091 1,888 1,318 1,0 0,758 4, 4285
1966 901/02 3,091 1,888 1,318 1,0 0,758 4, 4285
1967 901/02 (130 KS) 3,091 1,888 1,318 1,0 0,758 4, 4285
901/03 (160 KS) 3,091 1,888 1,318 1,0 0,758 4, 4285
1968 901/03 (110 KS) 3,091 1,888 1,318 1,0 0,758 4, 4285
901/50 (160 KS) 3,091 1,888 1,318 1,0 0,758 4, 4285
1969 901/13 (140 KS) 3,091 1,888 1,318 1,040 0,7931 4, 4285
901/13 (140 KS) 3,091 1,888 1,318 1,040 0,7931 4, 4285
1970 911/01 (155 KS) 3,091 1,777 1,217 0,926 0,7586 4, 4285
911/01 (180 KS) 3,091 1,777 1,217 0,926 0,7586 4, 4285
1971 911/01 3,091 1,777 1,217 0,926 0,7586 4, 4285
1972 915/03 (165 KS) 3,181 1,833 1,261 0,9615 0,7586 4, 4285
915/03 (190 KS) 3,181 1,833 1,261 0,9615 0,7586 4, 4285
1973 915/03 3,181 1,833 1,261 0,9615 0,7586 4, 4285
915/08 (RS 210 KS) 3,181 1,833 1,261 0,925 0,724 4, 4285
1974 915/06 3,181 1,833 1,261 0.9259 0,7241 4, 4285
915/40 3,181 1,833 1,261 0.9259 0,7241 4, 4285
1975 915/43 3,181 1,833 1,261 0,9615 0,7241 4, 4285
915/40 3,181 1,833 1,261 1,0 0,821 4, 4285
915/06 3,181 1,833 1,261 0.9259 0,7241 4, 4285
930/30 (Turbo!) 2,250 1,304 0,893 0,656 - 4,222
1976 915/44 3,181 1,833 1,261 1,0 0,821 3,875
930/33 (Turbo 260 KS!) 2,250 1,304 0,893 0,656 - 4222 or 4,000
1977 915/60 3,181 1,833 1,261 1,0 0,821 3,875
930/33 (Turbo!) 3,181 1,833 1,261 1,0 - 4,222
1978 915/62 3,181 1,833 1,261 1,0 0,785 3,875
930/34 (Turbo!) 3,181 1,833 1,261 1,0 - 4,222
1979 915/62 3,181 1,833 1,261 1,0 0,785 3,875
930/34 (Turbo!) 3,181 1,833 1,261 1,0 - 4,222
1980 915/62 3,181 1,833 1,261 1,0 0,785 3,875
930/34 (Turbo!) 3,181 1,833 1,261 1,0 - 4,222
1981 915/62 3,181 1,833 1,261 1,0 0,785 3,875
930/34 (Turbo!) 3,181 1,833 1,261 1,0 - 4,222
1982 915/62 3,181 1,833 1,261 1,0 0,785 3,875
930/34 (Turbo!) 3,181 1,833 1,261 1,0 - 4,222
1983 915/62 3,181 1,833 1,261 1,0 0,785 3,875
930/34 (Turbo!) 3,181 1,833 1,261 1,0 - 4,222
1984 915/67 3,181 1,833 1,261 0,965 0,7631 3,875
930/34 (Turbo!) 3,181 1,833 1,261 1,0 - 4,222
1985 915/72 3,181 1,833 1,261 0,965 0,7631 3,875
930/36 2,250 1,304 0,829 0,625 - 4,222
1986 915/72 3,181 1,833 1,261 0,965 0,7631 3,325
930/36 2,250 1,304 0,829 0,625 - 4,222
1987 NEW SERIES! G 50/00*
930/36 2,250 1,304 0,829 0,625 - 4,222

That's what I got from friend of mine. I don't know exactly from which book it is. Hope I've helped :agree: