Valve springs???
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Valve springs???
I'm planing to build a 400 engine. I have a Comp 268H cam, roller rockers and I'm looking for valve springs to match.
Would the 4bbl cleveland springs be ok?
Or would it perform better with dual springs that handle 550lift like the Elgin # RVK-9901S?
Would the 4bbl cleveland springs be ok?
Or would it perform better with dual springs that handle 550lift like the Elgin # RVK-9901S?
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From: chicago burbs
i'd let the guy doing your heads get the right springs for you, he may have to work the spring seats and/or change the retainers for clearance due to the added lift of the cam. the 268H is a "done deal" in a Cleveland, but the M/400 heads are different. stock 4V springs should be OK if they check out pressure-wise but springs do crap out, they aren't an item that usually gets re-used from one engine to the next, unless they check out OK! what is the casting number on your heads? (year) 1975 and later M/400 heads are different in the exhaust port than 1974 and earlier.
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I would take Torque1st's advice. Comp Cams made the cam, they know what it needs to work properly. Why guess when they already have the answer? Call them.
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I will call comp cams as soon as I can.
When I'll have my heads to the shop I will ask for a multi angle valve job, I have 1.65/2.07Ferrea race valves.
Some people say to remove the little bumps in the exhaust ports and some other people say not to remove...
When I'll have my heads to the shop I will ask for a multi angle valve job, I have 1.65/2.07Ferrea race valves.
Some people say to remove the little bumps in the exhaust ports and some other people say not to remove...
Last edited by ReGGaTarT; Dec 5, 2005 at 01:00 AM.
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I called comp cams and they couldnt tell me if the 4bbl vlalve springs could match a 268H cam, I talked with an old man and he told me to use comp 940 springs or other springs with same pressure...
I will ask my parts guy to ship me 940-16 comp spings instead of 4bbl springs. I'm still waiting for the invoice... I buy a lot of my stuff from hd_mad_dog (Maddog racing and fastengineparts) on eBay.
I will ask my parts guy to ship me 940-16 comp spings instead of 4bbl springs. I'm still waiting for the invoice... I buy a lot of my stuff from hd_mad_dog (Maddog racing and fastengineparts) on eBay.
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