IT IS IMPERATIVE THAT YOU KEEP THE LIFTERS MATCHED TO THE CAM LOBE THAT THEY WERE RUNNING ON !!!! He couldn't keep rear tires on it! It did make several cross country trips to NJ from Colorado, before he busted the truck frame too! He sold the engine, and now it is in a Chevy Monza (with a lot of frame modifications)! After repairs, a drunk driver totaled the car, so the engine went into a 1970s vintage Chevrolet pick up. Probably got it too! The engine was so strong, he blew out the windshield and torqued the frame real bad in the El Camino. By the time he was done, he expected 500+ HP out of it. 2 lobes were almost round, so the valves were barely opening. The cam in the engine had been wiped out by the crappy oil the government has forced on us. The crank was actually blued from heat! He had to go for a new crank (forged), all new Federal Mogul bearings, a set of big valve heads that he ported and polished, titanium valves and rods, Crowley pistons and a high performance oil pump, as well as a performance cam and rockers. The mains and thrust bearings were wiped out, as were 6 of the 8 rod big end bearings. He had to go 020" over to clean up the cylinders. 5 pistons were installed reversed! 3 pistons were also installed reversed on the rods, and those pistons were forced into the sides of the cylinders, which wiped out the sides of the pistons and rings. On getting into the bottom end - more crappy work. We noticed that the seemingly fresh honed cylinders had (3 of them) with shiney - polished sides. Man, did we find a bunch! First, even before we got into the tear down, we found that the engine had 2 different heads! One from a truck, and the other from a later car (smaller valves!). He burned out 3 starters in a week! I finally talked him into taking the engine back out and doing a tear down, to see what was going on. After a week of this, when the engine got hot, you could not start it. The engine ran, but not well, and after about 1/2 hour driving, it seemed to get real hot and would smoke. When he bought it, it had been butchered by a back yard mechanic, that had no idea of what he was doing. My oldest son built up a truck 350, for use in his El Camino. Still a really good block! When I was regularly street racing on Telegraph in Detroit, I had pretty much the same block, with TRW forged pistons, stock cast crank, cleaned up rods, and balanced, and literally beat the hell out of it almost every Friday and Saturday night all summer! And the was also with a 200HP hit of Nitrous! It was a great motor, and when the subframe finally split on the poor Monza that it was in a local farmer bought it to put in his truck. They would also have their coding beginning with a 'C', and not a 'T'. Blocks that where used in 300HP and over configurations had the longer "nodular" iron center main caps. Yes, the "Nickel" myth is just that, a myth! This information is pulled directly form my " 1965-1970 Chevrolet by the Numbers" book! As far as the nodular center main caps, that would be a no. It's your good ole early 1970's 4 bolt main truck block. That block was introduced in May of 1969 and was used through model year 1975. = I'm gong to nail the guy for something and will hunt until I find that something.,Your block code TAX with casting number 3970010 is a standard 1970 truck block C10-3500 series, 255HP, 4 barrel carb. In Missouri at that time I'd say it was probably a gotcha by the particular cop. I'm thinking that that law is on the books in more states than not. That might be something for the OZ folks to add to their list of "required documentation from the seller" on buying vehicles from the states in that if the engine doesn't have a clear serial number stamped on it there needs to be some serious documentation as to why it doesn't or it is a no go. Still it is far better to go up the food chain of the rego people to find the answer rather than stamp a bogus number on the block and then loose the truck because the number obviously is bogus. The casting number is 68 only and that is well documented so year model of the engine isn't a real issue, Two examples are Small Block Casting Numbers () Or Engine block Identification question 3914660 - CorvetteForum - Chevrolet Corvette Forum Discussion With the engine in question in OZ it doesn't take much to get a 68 engine to pass emissions equipment wise as long as it is not a California engine. = I'm gong to nail the guy for something and will hunt until I find that something., Click to expand.I'm thinking that that law is on the books in more states than not.
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