Valve spring rate question

289 - 351 cid Small Block Performance

Valve spring rate question

Postby 62Cometman » Tue Oct 02, 2018 4:54 pm

Hey guys quick question I have q brand new set of stock 289 valve springs sitting in my garage and I'm getting ready to rebuild a set of heads for my 260 build, I'm wanting to use the edelbrock 2122 cam and they suggest a set of springs to match the cam, edelbrocks springs at 90lbs closed and 190-200 open (found mismatch info so in that range), the stock 289 springs are 79lbs closed and 177 lbs open, The stock springs will handle the lift of the cam no problem but do you think I should still get a higher rated set of spring or do you think the stock ones would work fine to 5,500 rpm?
62 Comet 170, dagneham trans, 2.8 7.25 rear 260 T5 8 inch swap planned for the future.

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Re: Valve spring rate question

Postby Lip Ripper » Thu Oct 04, 2018 4:00 am

I would go heavier. Then you can easily wind it to 6000. Keeping rpm's up on that short stroker helps keep you in the power band.
66 Cyclone GT; 245/60R15's on 15x8's and 215/70R15's on 15x7 Magnum's.
There's nothing like the sound of a pushrod V8 singing at the top of her lung's.
Lip Ripper
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Re: Valve spring rate question

Postby barrys65cyclone » Thu Oct 04, 2018 4:51 pm

use springs by cam manufacturer. bad enough getting a new flat tappet cam broke in with out wiping a lobe now days.
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