Thanks Rick,

Ok, maybe this is a silly question: would you be willing to estimate in a rough generalization, where the torque curve shows up with that cam, and how far it carries.. And about what RPM the top of the HP curve is reached?

jason

Jason,
I have driven the truck recently, and while there is no tachometer hooked up and i don't know the torque curve, i'd say it pulls much stronger than stock for the entire RPM range. Its not my truck so I don't run it quite as hard but it pulls strong up to at least 5000 rpm. It pulls very well from 2500 through 5000 at least. I'd guess peak hp is probably around 4800-5000, but it has much more torque through the whole rpm range.

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Ryan Covalt
62 Plymouth Valiant Race Car 2170# 11.008 @ 117.65 MPH 1/4 Mile Best
72' Dart Swinger Street Car, 4 spd, 3330# 14.061 @96.58 1/4 mile Best

I did type a post and somehow it disappeared! Ryan kind of covered it !!

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

Fantastic. That sounds like there is no down side... IF one is going to do a cam swap, and build the engine to suit. Thanks for the reply Ryan, as you have fully answered my question.

Did you have to trim your valve guides to run 470 lift? 489 lift?

I had oversized valves installed and did have the guides cut down at the same time. Not sure you would have to, but we did anyway.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

hmm im running .473 lift, but i heard up to .480 lift if pushing it. hopefully it wont be an issue

I think you will have to check. Is the head off? Then it is simple to have them trimmed down a little. If not it may be close.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6