Necessary to take out inner spring? - Team Camaro Tech
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post #1 of 6 (permalink) Old Feb 16th, 07, 03:41 PM Thread Starter
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Patrick
 
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Necessary to take out inner spring?

I'm building a 305 with stock heads and springs. Is it necessary to take out the inner spring while breaking in the cam? The cam is not that big, just a step above stock.

69RS/SS,383,10:1cr,4.10,60ft1.6sec,1/[email protected],1/[email protected],Vicjr,RPMheads,750dp, Proform main body, cam,246*-250*@.050,.510,522,1.6rr,700r4,3200stall
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post #2 of 6 (permalink) Old Feb 16th, 07, 04:17 PM
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Re: Necessary to take out inner spring?

If you can assure that you go straight to 2500 for 30 min or so , you can do it without removing he inner, but if not , I would . Never knows what is gonna interupt the breakin process. You some break in lube and maybe fill crank with Rotella . You are gonna have to change oil anyway to get all he moly lube out of the pan anyhow. Add the GM EOS for safety also.

Don
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post #3 of 6 (permalink) Old Feb 16th, 07, 04:22 PM
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Re: Necessary to take out inner spring?

Hydraulic flat tappet cam ?
Just above stock ?
No you do not need to.
That is done with Solid flat tappet cams.
Roller cam Hydraulic or solid doesn't need to either.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #4 of 6 (permalink) Old Feb 16th, 07, 05:15 PM
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Bill
 
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Re: Necessary to take out inner spring?

Quote:
Originally Posted by speedfreek View Post
stock heads and springs
Stock springs are only single springs, there is no inner to remove. You might have a "damper", but no inner spring.

Make sure that the stock springs will work with your cam, most upgrade cams, even the smallest ones, need a different spring to avoid coil bind.

Bill Koustenis
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1971 Chevelle "Heavy Chevy" original owner


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post #5 of 6 (permalink) Old Feb 17th, 07, 09:53 PM
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Re: Necessary to take out inner spring?

Removing inner springs and installing lighter pressure break-in springs is only needed on agressive lift flat tappet cams. Yours should be fine without it. I am hearing that many folks (and manufacturers) recommend using Desil oil for break-in since it has a high zinc content. Someone else mentioned an additive which may be zinc as well. Run it up to 2 - 2.5K RPMs and keep it there for 20 minutes. Then tune it up and run it for a bit. Change the oil soon after as the filter will catch all sorts of goo and clog it up quickety quick.

Dave
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post #6 of 6 (permalink) Old Feb 18th, 07, 06:56 AM Thread Starter
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Patrick
 
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Re: Necessary to take out inner spring?

Thanks guys.

69RS/SS,383,10:1cr,4.10,60ft1.6sec,1/[email protected],1/[email protected],Vicjr,RPMheads,750dp, Proform main body, cam,246*-250*@.050,.510,522,1.6rr,700r4,3200stall
383 IS SOLD!
Building a 489BBC

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