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#1
05-06-2023, 08:42 AM
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TKX maybe
I've been thinking about swapping in the tkx from the original m21 I have in my 70 gto. The 2.87 first gear and the overdrive sound real appealing. I'd keep all the factory clutch linkage and bellhousing. Firsr off all I'd like to know if one of the vendors has a shifter handle that looks the same as the original Hurst competition plus shifter(roundish) and of course comes up through the floor in the stock location. Second is I have 3.31 gears with a 255/60-15 rear tire which is around 26.5 " tall. My car runs around 2800 rpms at around 65-70 mph. The .81 OD drops it around 500 rpms which to me sounds ok. The .68 looks like it would drop it additional 200 rpms more. I think I'd be more inclined to go with the .81 OD but not positive. Motor is the original 455 with a ra4 sized cam. Thanks for any opinions.
One part I'm pretty sure wouldn't work anymore would be how now you put it in reverse and turn the ignition key off and it locks the shifter so you can pull it out of gear unless you have the key on. The original anti theft device...lol.
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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007 (cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD 1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86' |
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