Caco2120 said Hello guys. In bone stock, 60k mile trim....what would be the boom point on a stock 1977 904? I know it may be a silly question, but most transmissions seem to have a "wives tale" type hp limit. Any input on flywheel hp? 350? 400? 450? Would a manual valve body prolong life at all by eliminating the slips between shifts? Thanks all for the opinions. Click to expand...