anthonyt Posted August 11, 2005 Report Share Posted August 11, 2005 Can anyone point me to where i can acquire a close ratio gear set for the 7/8 gearbox? As they are for a track car they need to be from a reputable mob. Quote Link to post Share on other sites
tr8coupe Posted August 11, 2005 Report Share Posted August 11, 2005 just get a t5 from a tvr breakers a fantastic gearbox and close ratio fits straight in Quote Link to post Share on other sites
anthonyt Posted August 15, 2005 Author Report Share Posted August 15, 2005 Thaks for the reply however the class that i race in means that i need to have the original box, gears howver are free, the engine is putting out around 350HP so i really need some uprated gears. Can anyone else help? Quote Link to post Share on other sites
Guest hodgie Posted August 15, 2005 Report Share Posted August 15, 2005 Right, now big question. How does the t5 fit, bellhousing, gearbox mount etc. Is the propshaft length the same etc. Same clutch plate? Quote Link to post Share on other sites
tr8coupe Posted August 15, 2005 Report Share Posted August 15, 2005 just get one t5 with bellhousing from this guy very cheap http://www.bellhillgarage.co.uk/ u just need to drill 2 new holes to bring rear mount a bit to rear ,dump tr7 ruber mount and get a chevy race one £20.00 bolts ok to tr7 gearbox cross menber and get a proper prop from repcoprop to take all that torque just use a tvr one griffith 500 or other happy tr8ing Quote Link to post Share on other sites
Guest Larry J-C Posted August 26, 2005 Report Share Posted August 26, 2005 Anthony - John Eales used to have sets available but they were about £800! I raced my V8 for years on standard gears and franky with the torque available never felt to need for anything else. If you must, Johns phone number is 01455202909. Quote Link to post Share on other sites
anthonyt Posted August 28, 2005 Author Report Share Posted August 28, 2005 Larry, how did you get around the strength problem in 5th gear? After much experimentation I have geared the car so that i am at 6700rpm in 5th at the end of the longest straight. But the issue is that i am now needing to rebuild for the second time in 18months, i had hoped that the a close ratio set on the first four gears would alleviate the problem by meaning that 5th would only be required on the longer straights. Engine has been stroked to 4.5 litres and substantially worked so torque is way more than what would be expected from a 3.5l. Should i just forget about gearbox life and just replace it every 6months or so? Quote Link to post Share on other sites
tr8coupe Posted September 7, 2005 Report Share Posted September 7, 2005 i believe quaife has a close ratio set for r380 not sure for lt77 as u need to use the original gearbox? http://www.quaife.co.uk/products/gearkits.htm Quote Link to post Share on other sites
Guest Larry J-C Posted September 12, 2005 Report Share Posted September 12, 2005 Anthony, Sorry for the late reply. I reckoned on a gearbox giving a full season on the circuits - say ten races and then the bearings would need sorting. The only time I have had a problem with the gears themselves is when I bought a 'recon gearbox' and found that 5th had broken off. There are 2 standards of 5th gear fitting and if I remember the later (stronger one) held fifth on with a bolt rather than a circlip. However I don't think that the gears are the problem with this box and you will probably find that a close ratio set is no stronger - its that pesky little bearing between the first motion shaft and gear shaft (you know its shot when, with the box in neutral, that horrible rumbling noise dissapears when you put your foot on the clutch). Urban myth has it that when fitted to the sherpa vans they replaced it with a roller bearing for the extra torque - but I have never been able to chase that down. Enjoy the box changes - I got it down to 2 hours. Larry Quote Link to post Share on other sites
anthonyt Posted September 13, 2005 Author Report Share Posted September 13, 2005 Thanks Larry that clears it up then, i'll get it on the stands tonight. Last time it took four hours so at least i have something to aim for. Quote Link to post Share on other sites
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