Rebuild 7/8" M20 or...? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tom · 01-07-2006, 06:58 PM

My 64 M20 is going out again, and I know its the case causing the problem. New supercase =$270 + 140 for rebuild kit and then I have to pay someone to put it all together [$100-200] Im looking at between $500-600. Lucky for me I have a set of modify'd vortec heads Im going to sell to fund this project[PM for info]. So, are there any 5speeds that are an option? T56 [6sp]is way too much, Im thinking in the $1000 range and want to keep my stock shift linkage. Or a cheap rebuildable 1" M20 would be cool too if I could find one. I really enjoy this tranny.

**crossy** · 01-07-2006, 11:23 PM

tom, all the GM 5 speeds I'm aware of are rail shifted so they dont even use your style shifter. the 5 speeds that DO use a mechanical shifter are high priced DNE(doug nash), and Richmond units. the 7/8" munchies were not the greatest for performance use but I dont think you are drag racing your rig anyway so why not consider a 80's model Camaro 5 speed that are starting to get plentiful. you might be surprised what you can get for even an old ailing munchie like yours. DAVE

ureckme · 01-08-2006, 01:13 AM

Tom I can build it. I have done many many 3, 4, and 5 speeds. I just dont do automatics, I have a family member for that plus may be could use the heads

01-07-2006, 06:58 PM	#1
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,733	Rebuild 7/8" M20 or...? My 64 M20 is going out again, and I know its the case causing the problem. New supercase =$270 + 140 for rebuild kit and then I have to pay someone to put it all together [$100-200] Im looking at between $500-600. Lucky for me I have a set of modify'd vortec heads Im going to sell to fund this project[PM for info]. So, are there any 5speeds that are an option? T56 [6sp]is way too much, Im thinking in the $1000 range and want to keep my stock shift linkage. Or a cheap rebuildable 1" M20 would be cool too if I could find one. I really enjoy this tranny. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

01-07-2006, 11:23 PM	#2
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Re: Rebuild 7/8" M20 or...? tom, all the GM 5 speeds I'm aware of are rail shifted so they dont even use your style shifter. the 5 speeds that DO use a mechanical shifter are high priced DNE(doug nash), and Richmond units. the 7/8" munchies were not the greatest for performance use but I dont think you are drag racing your rig anyway so why not consider a 80's model Camaro 5 speed that are starting to get plentiful. you might be surprised what you can get for even an old ailing munchie like yours. DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

01-08-2006, 01:13 AM	#3
ureckme ureckmefixit2@cox.net Join Date: Dec 2004 Location: Mesa AZ. (Phoenix) Posts: 1,284	Re: Rebuild 7/8" M20 or...? Tom I can build it. I have done many many 3, 4, and 5 speeds. I just dont do automatics, I have a family member for that plus may be could use the heads __________________ That's U RECK ME FIX it 2 74 Chevy Short Bed 355ci Sportsman II 64cc Angle Plug Crower Custom Grind .462in .486ex Dyno Test 422hp @ 5600 And it's got a Holley 3.73 Gears 12 Bolt 3.73 w/Posi 700R4 Going In I'm a Body Man So There! That's why it's not painted



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