Just installed a tacho with the long rod hyper pak 62 valiant.
Well she gets up and boogies and i was shocked when i saw the rpm im getting. I had it out to 6k on the road not a drama, is this the sort of rpm i should be expecting with this kind of build? I even double checked to make sure that i had the tacho set for 6 cylinder! Gear changes would be at around 5500 to 5700 I did notice that power loss was evident at the 6k mark, obviously I wouldnt be red lining the car every gear, every time I love cruising in this car! And with fuel at $1.65 a litre and the cost of a rebuild no thanks.

I'll be taking it to get dyno tuned soon but before that I want to make sure everything is in good order. These areas I feel may be the weak points of engine, well maybe not to you.

Dissy- I've read about regraphing which springs etc should I use? currently using elec dissy with msd 6al.
Pushrods- I'm currently using stock ones, should I invest in a custon hardened set?
Rockers-Currently using a remanufactured set from rokerarms.com, Is it worth while changing to rollar rockers if my engine pulls this sort of rpm?

Any other tips would be great on what what I should have done before I get the dyno tune.

Thanks again.[/img]

I can run my 63 Dart to 6K very easy and drive it every where. Just pull it to 6K on the strip.

Richard

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Part of Tyrde-Browne Racing

Use what you have and set the total mechanical advance to 30 degrees.
No advantage here, use what you have until it becomes a problem.
No advantage here, use what you have until it becomes a problem.

DD

How do I set my mechanical advance to 30deg? Do I do this by changing something in the dissy? I'm currently not using any vacuum advance, should I install this?

I've turned my long rod motor to 6700 a few times, and usually shift at 6500.

I've used stock rockers and RAS/Cox 1.6 rockers. No difference in performance.

I do have 10 Smith Brothers pushrods left in the motor too. The geometry was off one time I had my Cox rockers in and it ate a couple.

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Official Cookie and Mater Tormentor.