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Robbbyg Robbbyg is offline
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Join Date: Aug 2008
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Maybe its using used parts that is the cause of your probs and not inherent socalled weakness of the 915, i see a couple of guys here are running 400hp with no problem
Interesting read here which is exactly what i meant when i said the shorter gears of the 915 is like putting extra 50hp at the wheels over the standard 930 box

Transmissions & Clutches | Rennsport Systems | Porsche Performance Systems and Support

Ill quote first line anyway as written by Rennsport for the unbelievers and knockers
Transaxles and Clutches
Performance gearing has been a staple of Porsche performance since 1948. Selecting the proper transmission ratios for your gearbox is an integral part of improving Porsche 911 automobiles. It has been said that installing a set of shorter spaced gear ratios is like adding 50 HP to your car!
Last row 1977 3.0 930 260hp built, still reassembling
Row 1998 996 MK1 3.4 296hp new daily driver
Old 11-15-2014, 09:36 PM
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