huge RPM

Unit 5302 · 10-15-2001, 11:05 PM

Well for the race vs street motor it's pretty simple.

You will be giving up idle quality, low end power, fuel economy, linear power increases, and long life for a very powerful engine.

I don't know of many EFI intakes that will support 7200rpm, although the 302 can certainly take it. One of the problems with running the 302 to 7200rpms is lifters. You can either get some seriously strong springs and do alright with hydraulic lifters (not stock ones), or you can go to a rolid roller cam. As for the cam specs, forget about lift, you're gonna need quite a bit of duration. You can only have so much lift without piston clearance problems, and you'll need most of what you can get. Plus having a high lift cam robs horsepower. The higher that valve lifts, the more power that cam is using to move the valvetrain, and with the serious springs and lifters you're gonna have to run, it'll be a big power drain.

You will need to have the engine balanced, and I would recommend a very good NHRA approved harmonic balancer. A windage tray and a deep oil pan is probably a real good idea, or a dry sump oiling system. Running high rpms can whip your oil into a froth, and that is not something you want to do with a race engine. There are all kinds of things that can be, should be done to a high rpm engine. Don't skimp on parts. If you do, you will pay the price.

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10-15-2001, 11:05 PM	#4
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Well for the race vs street motor it's pretty simple. You will be giving up idle quality, low end power, fuel economy, linear power increases, and long life for a very powerful engine. I don't know of many EFI intakes that will support 7200rpm, although the 302 can certainly take it. One of the problems with running the 302 to 7200rpms is lifters. You can either get some seriously strong springs and do alright with hydraulic lifters (not stock ones), or you can go to a rolid roller cam. As for the cam specs, forget about lift, you're gonna need quite a bit of duration. You can only have so much lift without piston clearance problems, and you'll need most of what you can get. Plus having a high lift cam robs horsepower. The higher that valve lifts, the more power that cam is using to move the valvetrain, and with the serious springs and lifters you're gonna have to run, it'll be a big power drain. You will need to have the engine balanced, and I would recommend a very good NHRA approved harmonic balancer. A windage tray and a deep oil pan is probably a real good idea, or a dry sump oiling system. Running high rpms can whip your oil into a froth, and that is not something you want to do with a race engine. There are all kinds of things that can be, should be done to a high rpm engine. Don't skimp on parts. If you do, you will pay the price.