I know they are twice the price of the Pro-Comp heads, but i like the fact that they have the smaller chambers to keep the CR atleast stock or slightly better. I was also looking at the edelbrock website and came across some E-CNC ported heads, the 325 CNC which are an oval port for 1015 each bare, so not much more than the RPM heads and they have fully CNC ported intake and exhaust runners and Combustion Chambers. I've found them online for 965 each bare, and I have a complete comp cams valve train to go in just need valves. I've also decided that I'm gonna run the Edelbrock 60429 performer rpm heads that I believe are the exact same as the gm ZZ502 heads. Do you think the stock upper intake could be opened up enough to run a 90mm LSx style TB to help upper rpm flow? I know it's kind of the opposite design of the sticker so it will be geared more towards mid to upper rpm power and the stocker with the longer runner design will be more for low to mid rpm torque.
I've been looking at the Edelbrock Pro-Flo XT EFI intake that is designed for an LSx style 90mm TB. Just wanted to post this question concerning how well do you guys think the stock 96+ vortec 454 intake manifold flows and at what power levels do you think it starts to become a restriction? I would love to sit in a dyno cell for a few days and run these cams through an L29 longblock, with all the supporting parts of course. Ramjet ZLrpm- mechanical roller cam - 88961447 - dur. Very cool! I would have loved to see them drop in a ZZ502 cam just for comparison. I don't think Ive ever seen engine dyno results from an L29 longblock before. The L29 has to breathe all of its air through that 75mm MAF and air intake system. The dyno even uses an electric waterpump. Then there s the engine accessories which aren't being driven by the crankshaft. Those longtube headers surely helped the output as compared to the stock bigblock manifolds. It would have been cool to see an engine dyno result with the L29 injection in place.
0 kommentar(er)
