Not Ranked
Set the record straight
zrayr Z. lets start with that Glen has a paper car and motor to start. Now lets look at facts
ford build 5 different 289 blocks, 1 was experimental in aluminum.
blocks "A","B","D" all are hydro lifters and get pumpup problems at about 6,200 rpms. Rods have small bolts in rod caps and main caps on the bottom end where a standard width. The blocks are all about the same with the metal that cast them. They where some 289 blocks that where stretched to a 302 but had thin clyinders and water issues. Skirts in the 302 blocks are .020" longer These motors all made about 195 to 225 hp at 5,000 rpms. com pression was from 10.1 to 8.75. your motor was 11.5 to 10.0 These motors had a limit of 6,000 rpms with a single point distributor. Valve springs where in the 170's seat pressure. This covers these 3 blocks now yours if you have a "K" block
Your block has larger rod bolts, higher nickle in the block, wider main caps. The cranks where hand picked and had the Brinell treatment done on them. The valve spring have seat pressure around 300 at seat with a SOLID camshaft and lifters. intake manifold aluminum. Biggest thing for turning 7,000 rpms was the larger dampener and counterweight added. With out all these things added to the "K" motor it wouldn't last turning 7,000 rpms. Dual points where needed also. Some of the motors had better valves. timing up to 35 degrees with this motor. the others where limited to less.
There is a RUMOR that ford did try and build some small blocks of aluminum. I don't have any solid info on this. Could have been for Shelby's GT-40 cars. Looking to save weight and increase power.
Hows that for a fairy tale I don't think that Glen has a "K" motor or block laying around in his back yard or he can go down the street and get one at a Pep boys or Auto zone. Maybe you have a spare to sell him??? Last thing is if you ran your motor at 700 rpms, it would break from the bad harmonics at this rpm. Rick L.
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