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Old 04-29-2014, 04:43 AM
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chevy 350 valve retainer question.

Hi, im going to replace my valve springs and retainer.
I have ordered a summit sbc spring and retainer kit.
Should i use the old retainer with some kind of shield on i think it is exhaust valves. Some kind of cover over the spring. I think you no what i mean. Or should i use the new retainers in the kit.

/Magnus

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Last edited by gonaker; 04-29-2014 at 04:54 AM.
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Old 04-29-2014, 10:16 AM
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Is this what you bought?


If so, you should use the springs, retainers , locks and seals that came with the kit.
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Old 04-29-2014, 10:23 AM
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Yep, its that kit. Ok thanks alot
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Old 04-29-2014, 06:26 PM
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You did not state which heads you have. Stock SBC heads have rotators on the exhaust side.. That kit will not work out of the box.. You have to shim the exhaust spring seats as they are deeper than the intakes to allow for the rotators with the thicker tops and the same length springs, intake and exhaust..

No shims= no spring pressure.. Get a handfull of asst. .015-.030-.060" spring shims and set all spring heights the same.. Do not use the stamped "shields".
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Old 04-30-2014, 01:01 AM
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Quote:
Originally Posted by BOBCRMAN@aol.com View Post
You did not state which heads you have. Stock SBC heads have rotators on the exhaust side.. That kit will not work out of the box.. You have to shim the exhaust spring seats as they are deeper than the intakes to allow for the rotators with the thicker tops and the same length springs, intake and exhaust..

No shims= no spring pressure.. Get a handfull of asst. .015-.030-.060" spring shims and set all spring heights the same.. Do not use the stamped "shields".
Ok, that didnt sound so good Its 1989 TBI heads. xxxxx183 or something like that. Do i need to shim my springs with these TBI heads?

Last edited by gonaker; 04-30-2014 at 01:21 AM.
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Old 04-30-2014, 05:04 PM
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You will need to shim the spring seats on the exhaust valves. To bring them up to the intake s-seat height. Actually ALL spring heights should be checked and set to the spring seat spec pressures..
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