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03-25-2013, 02:23 PM
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#1 |
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Registered User
Join Date: Mar 2013
Location: Victoria, BC
Posts: 6
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Swap "granny gear" 4speed to a m20 4 speed muncie
Hello,
I have a 1968 c10 stepside with a 350 and a 4 speed manual. I can pick up a muncie M20 for a good price. Has anyone ever installed one of these in their truck? Is it something that is fairly easy to do without any major modifications? Is there a better inexpensive transmission solution I could look at? Any advise would be greatly appreciated. Thx Posted via Mobile Device |
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03-25-2013, 05:55 PM
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#2 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: Swap "granny gear" 4speed to a m20 4 speed muncie
What is cheap on the trans, & what rear gear are you running? crazyL
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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03-25-2013, 07:06 PM
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#3 |
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Registered User
Join Date: Mar 2013
Location: Victoria, BC
Posts: 6
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Re: Swap "granny gear" 4speed to a m20 4 speed muncie
$400 for the trans, I think the rear end is running 4:11 but I'm not sure.
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03-25-2013, 08:08 PM
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#4 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: Swap "granny gear" 4speed to a m20 4 speed muncie
If the trans is in good shape, its a "smokin deal"....most likely a 3.73 gear on a 1/2 ton truck. I like to pull the gears way south on the box.....read the sig, 3.28/2.14/1.57/1.24/1 /.76 When the yougest kid had that old truck to 5700, in 5th gear....I told him either back of , or pull the next gear...she is allready @ 125
 You dont want to play with the M-21-22 (2.20 1st gear)...too tall(good on the strip, with a 4.56 or 4.88 gear), & you will row the snot out of that box, in that 1320 ft ride! crazyl
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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03-26-2013, 09:43 AM
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#5 |
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No No
Join Date: Jun 2005
Location: Pueblo Colorado
Posts: 1,781
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Re: Swap "granny gear" 4speed to a m20 4 speed muncie
Minus needing a shifter for the Muncie and making a new hole for it should be a direct swap can even use the same clutch. I love m20's there a great trans with the right rear end I had one in a olds and with the rear end in that car holy crap shifting to 4th at 80 was fun dissent seem like I was reconfigure it that high either . Granted it would be better with a 5 speed but the cash they are wanting is not bad at all
Posted via Mobile Device
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1976 Custom Deluxe SWB Med FMB.3/4 Drop. Gen VI 454, Muncie HD 3 speed With Modified OE Hurst Shifter, 3.73 12 bolt, GMPP HO roller cam, Hooker headers, Performer intake with modified Q-jet, Accel distributor. Best 1/4 12.3 @108. Funnest run 19.84 @88 full 1/4 mile burn out. 1997 K1500 ext cab 5.7 stock except muffler |
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03-26-2013, 10:44 AM
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#6 |
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Registered User
Join Date: Mar 2013
Location: Victoria, BC
Posts: 6
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Re: Swap "granny gear" 4speed to a m20 4 speed muncie
Ok, thanks for the info that's what I needed to know!
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03-26-2013, 09:34 PM
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#7 |
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Registered User
 
Join Date: Mar 2011
Location: Valley of the Sunstroke, Arizona
Posts: 1,210
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Re: Swap "granny gear" 4speed to a m20 4 speed muncie
See my thread, I'm doing one now
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My build thread - Devastation and Reform http://67-72chevytrucks.com/vboard/s...d.php?t=567131 |
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