WebNov 6, 2024 · Nov 4, 2024. #16. Do a search on 920 heads. A "class" racer posted flow numbers and stock 920's flow better all around than stock 302's. Both are closed chambers. Remember, the chamber volumes you are quoting require milling the head approximately .040. After porting, all bets are off. WebChanges in the head. An unusually large head; A rapid increase in the size of the head; A bulging or tense soft spot (fontanel) on the top of the head; ... The most common problem is a partial blockage of the flow of …
SCJ flow numbers... 460 Ford Forum
WebSep 27, 2024 · The stock Vortec iron head will not tolerate more than 0.440-inch lift. We measured our stock iron heads right out of the box and the retainer-to-seal clearance was only 0.470-inch. Subtract the standard 0.050-inch clearance, this leaves only enough room for a 0.420-inch lift cam. That just won’t do. But don’t despair. participating life insurance policy dividends
920 vs. 302 Heads For A Bodies Only Mopar Forum
WebJul 5, 2024 · RS-X cylinder heads flow almost 500 cfm at .787 inch of lift due to the tall, straight ports. Dragoiu says customers may experiment with the bare, unported head to develop different ports or run different valve sizes. But don’t expect to order them right away. The majority of the heads are slated for the ZZ632 until some inventory is built up. WebOn these heads the flow bench is almost totally worthless. I think it’s misleading at best. We can port an older aluminum A-429 CJ head to flow 400 & 250. Then we can have a P-51 head that flows the same. The P … WebFeb 9, 2024 · 44. Reaction score. 24. Location. Houston. Eric is a race head porter, the intent was to review it as such. The review was spot on and nothing we haven’t heard a thousand times on this site. He isn’t a Chevy guy, he’s a head porter and can’t control what comes through his shop. participating fund