ORIGINAL GM v-belts--embossed or debased part #'s

[Mike M.]

i've bought and used a good number of quanta belts over the years, which to my knowledge are part #'d with a stamping procedure, hence leaving a DEBOSSED part # on their belts. several decades ago, at corvettes @ Carlisle, i bought a GM belt, in its original black and yellow GM shipping sleeve. both the belt and the sleeve part #'s were the same. this old NOS GM belt has its part # EMBOSSED in the belt. anybody with original belts on their c-1 and c-2's have such an EMBOSSED part # on their original belts? my embossed belt is obviously not a production item, rather a service replacement. yer thoughts boys. mike

[Gene M.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

Mike my experience with original GM belts is the number is raised in a depressed area. Actually molded into the belt.

I believe the ones that are impeded as hollow numbers into the belt as wrong poor imitations.

[Gene M.]

[Wayne M.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

Mike & Gene -- I always get confused with emboss/de-boss. Anyway here's some old ones that have been hanging from a nail on my basement wall for about 13 years.
I have two of the ...7710.

Wayne








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[Richard F.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

For what it's worth, I'm the original owner of a 1974 Corvette, I have all the original belts (3), The A.I.R. belt is embossed, the water pump is debossed with manufacturers Logo printed and the alternator belt is smooth painted/printed. Pictures attached, my point is different suppliers, availability of parts, production line demands and changes, anything is possible.

Rich F.

[Mike M.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

exactly like my example Wayne. thanks. now its up to all of us to determine if such examples were PRODUCTION belts. mike

[Chuck B.]

[Mike M.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

exactly like my sample. thanks chuck. mike

[Vinnie P.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

i think this is the belt Mike mentions

[Joe L.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

i've bought and used a good number of quanta belts over the years, which to my knowledge are part #'d with a stamping procedure, hence leaving a DEBOSSED part # on their belts. several decades ago, at corvettes @ Carlisle, i bought a GM belt, in its original black and yellow GM shipping sleeve. both the belt and the sleeve part #'s were the same. this old NOS GM belt has its part # EMBOSSED in the belt. anybody with original belts on their c-1 and c-2's have such an EMBOSSED part # on their original belts? my embossed belt is obviously not a production item, rather a service replacement. yer thoughts boys. mike

Mike------


Original belts used in PRODUCTION and also available in SERVICE were manufactured both ways. The original belts on my 1969 were a mix of embossment types. I recall my AIR belt was "debossed" and the alternator belt was "embossed". I don't recall the captive belt's type.

As you know, GM never manufactured belts. They were manufactured by a variety of major belt manufacturers of the period. Different manufacturers may have used different methods for the lettering or the same manufacturer may have used different methods for different belts. I think the only way to know the exact configuration of belts used on a particular car is to have the original belts (which few have).

[Richard F.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

Joe

I agree, in a previous reply I stated I have my original belts from my 1974 and have observed three different methods of markings including embossed, debossed and paint/silkscreen.

Rich

[Joe L.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

Joe

I agree, in a previous reply I stated I have my original belts from my 1974 and have observed three different methods of markings including embossed, debossed and paint/silkscreen.

Rich

Rich------

Yes, 1974 was in a change-over period as far as belts are concerned. The "wrapped" and other construction used earlier were being phased out and the "cut" style phased in. This process began about 1973 for PRODUCTION and SERVICE. Belts with 7 digit part numbers beginning with "9" were the newer "cut" style. Belts with 7 digit part numbers beginning with "37", "38" and "39" were the older style belts.

By the way, no PRODUCTION Corvette ever received "cogged" belts and no GM SERVICE belts for Corvettes were of the "cogged" type. "Cogged" belts are aftermarket only.

[Gary C.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

Mike,

Have blue print #3706006 for 53-5 6 cylinder, dated 11/18/52 and it says:
"G.M. Trade Mark, Part No. Const. No. & MFR's Identification Mark as designated (similiar to that shown) to be stamped or moulded on upper side of belt. No other marking must appear. Marking may be duplicated providing one complete set appears." .17 inch wide.

Gary
....

[Mike M.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

isn't it sad that the franklin mint 283/283 engine model has a cogged belt. mike

[Dan A.]

Re: ORIGINAL GM v-belts--embossed or debased part #'s

LOL, and it falls apart with time .