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mrein3 · 09-16-2005, 07:43 AM

I've owned two 350's with 3970010 cast in the back.
One was a 2 bolt main 350 that came out of a 1971 Monte Carlo. Now it is a 383.
The other was in my truck when I got it. When I took the pan off the bottom it had 4 bolt main caps.
So I guess what I'm trying to say is that it is probably a 350. It could have either 2 or 4 bolt main caps.

Most car suffixes are Cxx stamped in the front (yours is CHC) the Monte (2 bolt) was Csomethingsomething. The engine that was in my truck (4 bolt) has a TXD suffix which decodes to something like a 1976 or 78 truck.

09-16-2005, 07:43 AM	#12
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,254	I've owned two 350's with 3970010 cast in the back. One was a 2 bolt main 350 that came out of a 1971 Monte Carlo. Now it is a 383. The other was in my truck when I got it. When I took the pan off the bottom it had 4 bolt main caps. So I guess what I'm trying to say is that it is probably a 350. It could have either 2 or 4 bolt main caps. Most car suffixes are Cxx stamped in the front (yours is CHC) the Monte (2 bolt) was Csomethingsomething. The engine that was in my truck (4 bolt) has a TXD suffix which decodes to something like a 1976 or 78 truck. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN