Did any 73-87's come stock w/ M20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PHOENIX · 01-07-2003, 06:42 PM

Because in my Chevy Duty magazine it has floor shifter boots for them like they came stock.

Just curious.

Tom · 01-07-2003, 07:08 PM

Nope, never.
The only muncie's they got were the sm465.
Lots of cars got them just waiting to be swapped in though!

TX_Mudder · 01-07-2003, 08:09 PM

I have READ that they came on some trucks, but not very many.
I have not seen one, though.
-- Mike

Myride · 01-07-2003, 08:58 PM

My 77 blazers has one in it.

Tom · 01-09-2003, 01:35 AM

I think they stoped M20 production in the late 60's. After that it was the close ratio M21. At least every car I ever hear of having a muncie stock from that period is a M21, I could be wrong. Where the heck is captkaos when we need him? O yeah, joy riding in his new vette

PHOENIX · 01-09-2003, 12:36 PM

I just found it odd. I never heard of one coming stock, but thats how that magazine makes it sound (atleast to me).

**Captkaos** · 01-09-2003, 04:02 PM

4 speeds that were actual M20, 21, 22 never came in pickups. They were made from 64 to 74 when GM made the T10's The SM420 or SM465, (if I remember correctly) came under the M20 option code. You can correct me the quickest Tom, if you have your option sheet.

Muncie M21's were external rail shifted, SM's were internal rail shifted, what is yours Myride? Truck transmissions used a low gears first for all the manuals.

PHOENIX · 01-09-2003, 04:39 PM

Im pretty sure I have the sm465. The boot in the pictures looks the same as my sm465 boot. Anyone else have the Chevy Duty catalog and see what im talking about?

Thanks guys!

Tom · 01-09-2003, 04:56 PM

Quote:

Originally posted by Captkaos
if you have your option sheet.

I wish! Thanks for the info chris.

Myride · 01-09-2003, 05:39 PM

I will go look and get back to you captkaos.

**Captkaos** · 01-09-2003, 07:31 PM

Here is some pics for visual references. BTW, the SM465 weighs a TON and is cast, the Muncie is light and made of aluminum.

SM465 with internal rail:
http://www.novak-adapt.com/images/pics/sm465_flq_lr.jpg

Passenger Muncie (external rail = shift rods)
http://www.5speeds.com/racing/P0003133.jpg

Myride · 01-10-2003, 02:56 AM

I have sm465

01-07-2003, 06:42 PM	#1
PHOENIX Registered User Join Date: Oct 2002 Location: Phoenix, Arizona Posts: 4,703	Did any 73-87's come stock w/ M20 Because in my Chevy Duty magazine it has floor shifter boots for them like they came stock. Just curious. __________________ * AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

01-07-2003, 07:08 PM	#2
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,720	Nope, never. The only muncie's they got were the sm465. Lots of cars got them just waiting to be swapped in though! __________________ -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.

01-07-2003, 08:09 PM	#3
TX_Mudder Registered User Join Date: Jun 2001 Location: Houston, TX Posts: 126	I have READ that they came on some trucks, but not very many. I have not seen one, though. -- Mike __________________ http://home.houston.rr.com/chevy73/

01-09-2003, 01:35 AM	#5
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,720	I think they stoped M20 production in the late 60's. After that it was the close ratio M21. At least every car I ever hear of having a muncie stock from that period is a M21, I could be wrong. Where the heck is captkaos when we need him? O yeah, joy riding in his new vette __________________ -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.

01-09-2003, 12:36 PM	#6
PHOENIX Registered User Join Date: Oct 2002 Location: Phoenix, Arizona Posts: 4,703	I just found it odd. I never heard of one coming stock, but thats how that magazine makes it sound (atleast to me). __________________ * AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

01-07-2003, 08:58 PM	#4
Myride Registered User Join Date: Mar 2002 Location: Pacific Northwest Posts: 292	My 77 blazers has one in it.

01-09-2003, 04:02 PM	#7
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	4 speeds that were actual M20, 21, 22 never came in pickups. They were made from 64 to 74 when GM made the T10's The SM420 or SM465, (if I remember correctly) came under the M20 option code. You can correct me the quickest Tom, if you have your option sheet. Muncie M21's were external rail shifted, SM's were internal rail shifted, what is yours Myride? Truck transmissions used a low gears first for all the manuals. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

01-09-2003, 04:39 PM	#8
PHOENIX Registered User Join Date: Oct 2002 Location: Phoenix, Arizona Posts: 4,703	Im pretty sure I have the sm465. The boot in the pictures looks the same as my sm465 boot. Anyone else have the Chevy Duty catalog and see what im talking about? Thanks guys! __________________ * AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

01-09-2003, 05:39 PM	#10
Myride Registered User Join Date: Mar 2002 Location: Pacific Northwest Posts: 292	I will go look and get back to you captkaos.

01-09-2003, 07:31 PM	#11
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Here is some pics for visual references. BTW, the SM465 weighs a TON and is cast, the Muncie is light and made of aluminum. SM465 with internal rail: http://www.novak-adapt.com/images/pics/sm465_flq_lr.jpg Passenger Muncie (external rail = shift rods) http://www.5speeds.com/racing/P0003133.jpg __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

01-10-2003, 02:56 AM	#12
Myride Registered User Join Date: Mar 2002 Location: Pacific Northwest Posts: 292	I have sm465



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