new drive train? LS? LT? Tecumseh? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**MikeB** · 08-19-2023, 02:01 PM

I'm not saying a 292 would be a bad option. In fact, a fresh one would be a cool upgrade to an ailing 305. But extra work will be required. Here are some of the things that will need to be done based on my experience converting from a 250-six/manual to 350/TH350 in an 82 C10:

Some electrical wires will need to be lengthened, some shortened.
Fuel line mods.
Different radiator hoses and possibly heater hoses.
Alternator belt, pulley, and bracket (unless they come with the 292)
Frame-mounted motor mount brackets relocated. (I'm not sure is this needs to be done on a 71.)
New exhaust down pipe.
Some mods to kickdown linkage and modulator hard line/hose.
Throttle cable on 292 six will probably need to be longer.
Will have to get the 292 mounted so trans is in the same place longitudinally.

08-19-2023, 02:01 PM	#1
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,465	Re: new drive train? LS? LT? Tecumseh? I'm not saying a 292 would be a bad option. In fact, a fresh one would be a cool upgrade to an ailing 305. But extra work will be required. Here are some of the things that will need to be done based on my experience converting from a 250-six/manual to 350/TH350 in an 82 C10: Some electrical wires will need to be lengthened, some shortened. Fuel line mods. Different radiator hoses and possibly heater hoses. Alternator belt, pulley, and bracket (unless they come with the 292) Frame-mounted motor mount brackets relocated. (I'm not sure is this needs to be done on a 71.) New exhaust down pipe. Some mods to kickdown linkage and modulator hard line/hose. Throttle cable on 292 six will probably need to be longer. Will have to get the 292 mounted so trans is in the same place longitudinally. __________________ Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

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