The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - What is RPO code M-40

SS Tim · 12-02-2012, 06:10 PM

Are you sure it says M40 and not M49? M49 was the turbo hydramtic spid rpo call out be it a TH350 or a TH400. On the build sheet it would call out the trans. by its specific code like CJ would be a TH400.

12-02-2012, 06:10 PM	#4
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,507	Re: What is RPO code M-40 Are you sure it says M40 and not M49? M49 was the turbo hydramtic spid rpo call out be it a TH350 or a TH400. On the build sheet it would call out the trans. by its specific code like CJ would be a TH400. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban