WebJan 23, 2005 · 4. Flow numbers are similar, but in un-ported form the GT40P should make slightly more power depending on your combination. 5. The exhuast ports on the GT40P heads are revised and more efficient than the regular GT40 castings. The smaller valve size is more effective. 6. Webported gt40 iron flow numbers - Northern California Ford Owners Email this post to someone! Page: 1 2 Author Topic: ported gt40 iron flow numbers Jaejae5.0 ¯ Member # …

Thumper ported GT40 heads arrived (pics) - StangNet

WebThe GT40 and GT40P are two different sets of castings for four-cylinder Explorer/Mountaineer heads. The GT40P has smaller chambers, so it is a bit tighter than the GT40, although we do not recommend using the GT40P heads on a high compression build. The flow numbers for both heads are the same. WebDec 10, 2024 · I did a bunch of flow tests on 3 sets of stock 1966 289 heads and got basically those numbers (none had the exhaust port thermactor "bump"). The heads I use right now are ported, polished, chamber matched with 1.90/1.60 valves. They are bench tested at .28", flowing 235cfm intake, and 181 exhaust at .500. interprofessional practice healthcare

Intake manifold flow - Don Terrill’s Speed-Talk

WebIntake port volume 166cc 178cc 178cc Exhaust port volume 54cc 62cc 62cc Intake valve OD – 1.94" (21-4N stainless steel) for all Exhaust valve OD – 1.54" (21-4N stainless steel) for … WebAug 29, 2007 · GT-40 59.7 45.2 E7TE 55.1 39.8 '69 351W 56.95 39.7 289 51.45 35.85 GT-40 Al. 65.1 48.26 GT-40X Al. 65.7 52.9 Twisted Wedge 76.65 57.3 "Power heads" 67.05 57.9 … WebJul 13, 2005 · The intake port flows 235ish cfm with a 1/2 in. radius, but with the intake manifold attatched it drops flow to about 215 cfm. The intake manifold by itself flows about 220 cfm. The intake manifold ports are quite small and round. Should I be more concerned with the length of the runners or is my flow issue something that is definitely robbing ... interprofessional practice social work