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Old 08-19-2020, 04:17 AM
Jafa Jafa is offline
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Default Recommend me a 5 speed race gearbox

Down in little old New Zealand, we had a class back in the 80's called Sports Sedans. It was pretty much "run what you brung", with very limited rules - no more than 366 cubic inches, rear wing no higher than the roof or wider than the widest part of the car etc. Back-halved, tubbed, flares, wings, spoilers, engine moved back, or engine in the back, you name it, basically you were only limited by your ability to dream it up.

Anyway, the class was banned overnight sometime around 1990 and that was that, and the cars all got put in garages under dust sheets. Fast forward to 2012 I think it was, and now there is a class called Historic Sports Sedans, and the cars must be as they ran all those years ago. My brother purchased a car and has set about mechanically rebuilding it because it was totally rooted. It's a MK 2 Ford Escort from 1976, running a 350 Chev right back in the engine bay, and currently has a Tremec TKO600 gearbox. This might be rooted too, and also might not be able to cope with the new engine he's getting built.

So, looking for a new ( not second hand ) 5 speed ( 4th gear being 1:1 ) internally shifted ( no external shift rods ), H pattern ( not sequential ) gearbox to cope with about 670?hp and 600ft/lbs minimum. We'd probably prefer synchromesh, but if the killer gearbox is dog engagement then so be it. Budget is not unlimited, but we'll spring for something that'll last the distance.

Everyone loves a picture, so here is the carat the last race meeting:

IMG_8886 by JAFA851, on Flickr
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Old 08-19-2020, 04:56 PM
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Che70velle Che70velle is offline
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I ran Jerico’s in my circle track cars and never had a single failure.

70 velle' on custom chassis w/custom RideTech coilovers, RED sleeved 434 with Mamo 265s, F-body Magnum, 12 bolt 3:73, wilwood 6/4's, bla, bla, bla...build. thread https://lateral-g.net/forums/showthread.php4?t=39631
New 434 engine build here https://ls1tech.com/forums/generatio...ved-block.html

Thanks Dad!!

My Chevelle is old school... It has a belt driven power steering pump.
They're 17's, but I keep em clean!
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Old 08-21-2020, 11:25 AM
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gnx7 gnx7 is offline
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The G-Force GF5R is pretty bad ass..... but external shift rails:

I ran the G-Force GSR internal rail 4speed which was an awesome transmission in a 530rwhp/520rwtq 438ci LS7 powered Mazda RX-7 with 335's at all corners and 2470lbs wet with 8 gallons of fuel (no driver). While the 5speed would've been better.... the car was stupid fast even with the long gearing (3.31 gears out back with 26" tall tire).
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Project: 1969 Chevelle, alum 5.3, GTS76 turbo, Chiseled Perf A/W intercooler, Holley Dominator EFI, Davis TC, JRi coilovers, 14" brakes, T56 Magnum. CTS-V Recaro seats!
Coffey Fabrication Nashville, TN doing the fabwork! 800rwhp+/25mpg+/9'[email protected] goal

1993 Mazda FD RX-7, built LS7, T56 Magnum, Holley HP, Davis Tech TC, 8.8" 3.73 Cobra IRS diff, DSS axles, Ohlins coilovers, big brakes.
CCW 18x11 front 315/30/18's and 18x12.5 rear on 335/30/18 RA1's, 2850lbs
[email protected] 165mph Shift-Sector 1/2 mile speed
441ci AllPro headed motor and 200lb weigh reduction in the works....
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