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#1
12-21-2025, 02:35 PM
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Roll Call for anyone with documented 1964 M21 4spd car/ 76X8 engine
Anyone own a car or engine , or have documentation for one ?
778 transmission code 76X8 engine code |
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#2
01-08-2026, 07:04 PM
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Step right up , whose next .......
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#3
01-14-2026, 02:42 PM
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Maybe no help, but here is my original invoice from April, 22, 1964. 3.90 gears, Muncie wide ratio. The dealer had no info on the M21.
I have heard many times about the M21 availability in '64 but never saw one. The stories are about as common as the factory Tri-Power '67 GTO.
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BONESTOCK GOATS '64 GTO Tripower Hardtop (Wife's Car) '64 GTO Tripower Post Coupe (My Car) '99 Bonneville SE Sedan |
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#4
01-26-2026, 12:31 AM
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found this info https://www.nh-gto.com/GTO%20Engine%20Codes.htm
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#5
01-26-2026, 10:52 AM
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Bad info , par for the course on X8 and X9 details.
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#6
02-08-2026, 04:59 PM
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PHS Ebay car:
Look like a '8' ? Dealer is Royal Pontiac! 
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates Last edited by johnta1; 02-08-2026 at 05:19 PM. |
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#7
02-08-2026, 05:28 PM
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My Decode of Manifest:
Manifest with VIN P238253 Dealer Codes : 07 679 : Royal Pontiac Body # : PO16598 Invoice Date : 05/26/64 Plant: P is Pontiac MI Paint: C is Cameo Ivory Top: 2 is Black Wheel Color: A is Regent Black Model Series: 2227 is LeMans 2 door sports coupe Trim: 19 is Parchment Box 38: 2 is GTO Option Box 39: 2 is Radio - Pushbutton AM & Manual Antenna Box 42: 5 is Windshield Washer & Dual Speed Wipers & Instrument Panel Pad Box 43: 2 is HD Radiator Box 47: 1 is Lamp - Backup Box 50: 1 is Power Steering Box 52: 5 is Custom Wheel Discs & Custom Sports Steering Box 53: 1 is Soft Ray Glass; All Windows Box 60: 7 is Console - w/Bucket Seats Only & Mirror - Outside; LH & Clock - Electric Box 62: 5 is HD Springs & Shock Absorbers - Front/Rear & Seat Belts Custom - w/Outboard Retractor; Front Pair Box 64: 4 is Fan HD Box 69: 2 is Metallic Brake Linings Box 70: 3 is Safe-T-Track; Standard Axle Box 71: P is 3.90 Axle Ratio; Metallic Brake Linings Box 72: 05 is 7.50 x 14 Black - Oversize; Available on Wagon & V8 Box 75: 76 is 389 M. 3X2 BBL 348 HP Box 77: 8 is 389 4 Speed Manual-Close Ratio 
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#8
02-09-2026, 08:27 AM
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1964 GTO EBAY Ad
Should have added the ebay ad. Too bad the manifest doesn't show the price for the tranny. Wonder what the price is for it?
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates Last edited by johnta1; 02-09-2026 at 08:52 AM. |
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#9
02-09-2026, 01:39 PM
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What is a "rebuilt title"? Is that like a salvage title?
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#10
02-09-2026, 02:39 PM
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I'd say yes.
Probably has major parts from a different car. (frame or back halved with another car etc?) Also probably means the original VIN is not on the car.
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#11
02-09-2026, 11:47 PM
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GREAT Find on that 76X8 eBay car John !
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#12
02-10-2026, 06:53 PM
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Tranny price was $188.30
__________________
BONESTOCK GOATS '64 GTO Tripower Hardtop (Wife's Car) '64 GTO Tripower Post Coupe (My Car) '99 Bonneville SE Sedan |
| The Following User Says Thank You to Dick Boneske For This Useful Post: | ||
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#13
02-10-2026, 07:27 PM
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Is that the same as the 'W' wide ratio tranny?
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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