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Replacing Cam?

Forum: C3 Engines, Driveline and Handling

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Replacing Cam?

Posted: 8/27/20 6:19amMessage 1 of 4
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SAUTEE NACOOCHEE, GA - USA
Joined: 7/16/2016
Posts: 15
Vette(s): '78 Silver Anniversary

Took my small block 78 Silver Anniversary to a new mechanic because I had a valve that was sticking.  It was cracked as was two springs.  Replaced all springs and valves.  Told a couple lifters were cracked (bad) as well.  "New" mechanic said it is a good idea that I replace the cam with lifters as well.  

A couple questions:  

1. is that necessary or a good idea?  I've read where it will/can increase HP.

2. Cost to replace the valves and springs and necessary head work was $1100.00, which I thought was a decent price with all parts and labor.  High?  Low? Average?

3.  Did my research on new cam and lifters and saw a couple places, who specialize in C3s, list at about $350.00.  So that appears OK.  But total costs for everything is about $2200.  That's $750 in labor.  Seems a bit steep.  I live in north Georgia where my usual Vette mechanic charges $75/hr.  Should I be concerned?

PM me at sjh0006@windstream.net

Thank you for any input.      

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Re: Replacing Cam?

Posted: 8/27/20 6:29pmMessage 2 of 4
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Grapevine, TX - USA
Joined: 8/26/2006
Posts: 1537
Vette(s): 1972 LT-1 convertible with factory air. 2017 Black Rose Grand Sport M7 convertible.

You think he can do it in less than 10 hours?  Seems reasonable to me.

I'd do some research and find a good modern designed cam that will get a little more low end power.

   

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Re: Replacing Cam?

Posted: 8/29/20 6:45amMessage 3 of 4
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Cana, VA - USA
Joined: 7/3/2016
Posts: 382
Vette(s): 1975 Stingray 71 350 engine Flat top pistons Sniper fuel injection Hyperspark ignition Vintage Air air conditioning Borgeson power steering box

When I rebuild the 350 in my '75 last year, I put in a Compcams 300+ camshaft and am very happy with it.

If I did it again, I think I would have gone with a roller cam because of the issue of modern oils not having enough phosphorus and zinc to prevent excessive wear in flat-tappet camshafts.

   

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Re: Replacing Cam?

Posted: 8/29/20 6:53pmMessage 4 of 4
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Grapevine, TX - USA
Joined: 8/26/2006
Posts: 1537
Vette(s): 1972 LT-1 convertible with factory air. 2017 Black Rose Grand Sport M7 convertible.

I would definitely go with a roller cam.

   

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