i picked up a 302 sportsman block to build a 347.. i weighed it and it was 155 lbs bare.. i looked at another so called sportsman block and it was only 135 lbs...did ford make different blocks called sportsman B50... what does a 302 mexican block weigh 1971?? thanks
hmm... are you sure that the main caps were installed on both of those motors to achieve that weight comparison? Sounds like a good question for FRPP to me.
I have a dart sportman block and it weights right a round 165 lbs my stock block was around 115lbs but it was a 5 liter block
block I called DSS today,,they said the sportsman 302 where heavy when the first introduced then got lighter at the end of production
Sorry, I didn't see this sooner. When I was replacing my 1971 .030+ 9.5 deck block (which was 165lbs) we looked at a number of blocks that my machinest had, and he is a big advocate of Dart.........and I'm big on World. He had a Sportsman 9.5 deck and 8.2 deck, both were .030. The 9.5 was 175lbs and the 8.2 was 145lbs. He had a Dart SHP 9.5 and 8.2 and the weights were almost exactly the same as the FSP blocks.....within a couple of pounds. He also has (which he will not sell) Mexican 302 std bore and it was 140lb. He also had a new M6010 Boss 302 block which was 180. My World Man-O-War 9.5 block is 195lb and the stock bore 9.5 block I used was 170lbs before we went .030, and I know for a fact that the early 9.5 motors from mid 71 through mid 74 are about 10lbs heavier than later 9.5 blocks.................and this is all in the main web...........the reason you can put 4blt mains on the center 3. One thing my machinest does whenever he gets a motor in his shop is weigh it (after it is cleaned and bare....with main caps) and he has a long history of SBF/SBC/BBF/BBC weights going back a lot of years. It's also interesting how much material we took out of my 9.5 block during the priority oiling deburring, valley deburring and porting the oil return holes and oil pump port plus all the other deburring...............it amounted to just less than 2 pounds. No two production blocks will weigh exactly the same...............IMHO
Yes there have been a few different 5.0 sportsman blocks produced in the last 15+ years... Per the '05 Ford Racing Catalog, the M-6010-B50 weighs 10 Lb more than a stock block, while the M-6010-R302 weighs 160Lb... There was also a M-6010-A4 block that I don't have specs on, as well as aluminum versions...
sportsman 302 we found a nice mexican 302 block in pontiac mi and bought it.. we have the sportsman and the mexican block sitting side by side in the garage now.. the sportsman block does have a lot more webbing aroung the main cap supports..
Is it for racing or street and are you going to use a turbo or carb? For racing I wouldn't go more than .030 over..............although I've seen guys go much further.............remember that the 302 is a thin wall casting, not like a Dart or World Products block.........................IMHO
if you have it sonic checked you will know exactly how much you can go, I ran stock 2 bolt blocks at .040, and that was making 500hp at 8000rpm with a main girdle.
