WebDec 1, 1999 · Best of all for vintage Ford owners, the new heads bolted right on top of 289, 302, and 351 Windsor engines, so all of a sudden we went from digging through junk … WebDec 19, 2024 · Just sell it and buy a better intake. Dyno tuning a gt40 setup is an even worse use of money. A calibrated meter and injectors and it would be fine. Keep the EGR or just use a simulator. Most likely you could even run the stock meter and injectors since gt40 iron stuff doesn't exceed the stock 19lb injector capacity.
Porting and Flow testing GT40 heads - sbftech.com
WebDec 19, 2024 · Ultimately, when people have ported their E7s they’ve been able to achieve between 20 and 40 horsepower, which is, once again, nothing to sneeze at and about as … 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. how many cards in a straight
I home ported my GT40P heads and installed larger valves...
WebAug 3, 2004 · If you fig. in the going price of gt40 heads and the porting then it would come in at about 900$ range. Thumper said over 230 on the intake side, So I would guess comparable to what other heads flow at that level on the exh. as there has been alot of good work there. But I realy have no idea what the exh. flows maybe thumper can jump in and … WebMar 12, 2008 · as far as I know the Explorer GT40P and cobra GT40 heads are flowing almost identical intake port and exhaust ports, the GT40P has about 10% more flow and therefore makes more HP. The downside of the GT40P is that the spark plug holes are at an awkward angle and they special headers to fit. WebSep 22, 2010 · Here is flow data on the GT40 family of intakes that were ported without getting crazy and doing a lot of welding/high level mod work. These are stock pieces ported within the limits of the stock castings. 240-250cfm for bothh upper and lower are the norm. how many cards in a poker deck