97 vortec 350 cam options - S-10 Forum
 
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post #1 of 19 Old 07-27-2008, 10:54 PM Thread Starter
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97 vortec 350 cam options

I am not looking ot spend too much money and have tracked down several OEM cam to replace the factory vortec cam. Which would be the best for power vs fuel economy...also without having to have any machine work done and be reliable. Tall order i know.

LT1 Cam
LT4 Cam
LT4 Hot Cam

Then I heard a few people mention and 'RV' cam...which I can find very little info on.

Any of these cams I can pick up for 150 or less...

suggestions?

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post #2 of 19 Old 07-28-2008, 12:15 AM
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Re: 97 vortec 350 cam options

RV cam is a pet peave of mine.....it simply means a cam that will produce high TQ at low rpms.
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post #3 of 19 Old 07-28-2008, 12:18 AM
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Re: 97 vortec 350 cam options

Also.....make sure whatever cam you use, has less than .470" lift or you will have to machine the heads.
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post #4 of 19 Old 07-28-2008, 04:39 PM
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Re: 97 vortec 350 cam options

i am running the lt4 grand sport cam but i got new heads that were cut for .525 lift and the cam sounds great.
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post #5 of 19 Old 07-28-2008, 04:40 PM
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Re: 97 vortec 350 cam options

and it is in a 97 vortec 355 with 9.6.1 comp and useing 1.6 roller rockers
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post #6 of 19 Old 07-28-2008, 05:13 PM Thread Starter
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Re: 97 vortec 350 cam options

what kind of gas milage you get with that and what do you think your HP is?
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post #7 of 19 Old 07-28-2008, 09:24 PM
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Re: 97 vortec 350 cam options

Quote:
Originally Posted by Formulakid1 View Post
Also.....make sure whatever cam you use, has less than .470" lift or you will have to machine the heads.
thats not true

with new springs and retainers .550"ift is possible with no machining.

i vote lt4 hot cam

-mark
89 s10 blazer 5.7 vortec/t56 0411 pcm powered
03 zr2 s10 with some mods
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post #8 of 19 Old 07-28-2008, 09:51 PM
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Re: 97 vortec 350 cam options

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Originally Posted by tippmann243 View Post
thats not true

with new springs and retainers .550"ift is possible with no machining.

i vote lt4 hot cam
That's true.
But what springs and how much are they.

If you are talking about some beehive springs, what will the cost of the springs be vs. having the heads machined plus a set of regular springs?
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post #9 of 19 Old 07-28-2008, 09:52 PM
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Re: 97 vortec 350 cam options

Also, will this motor be carbed or EFI?
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post #10 of 19 Old 07-29-2008, 07:18 AM
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Re: 97 vortec 350 cam options

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Originally Posted by Formulakid1 View Post
That's true.
But what springs and how much are they.

If you are talking about some beehive springs, what will the cost of the springs be vs. having the heads machined plus a set of regular springs?
stock ls2/ls6 springs

i paid 49.99 shipped to my door for 16 new springs and i think 50 for retainers

-mark
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post #11 of 19 Old 07-29-2008, 09:17 AM Thread Starter
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Re: 97 vortec 350 cam options

Mark, how will them spring work with the Vortec heads. No problems...if that is the case I think that will be the direction I go.

LT4 hot cam with ls2 springs.

Sound like a plan?

Also, any known issue with this setup and a stock bottom end.

BTW this will be fuel injected.

Last edited by zap-mann; 07-29-2008 at 09:20 AM.
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post #12 of 19 Old 07-29-2008, 11:19 AM
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Re: 97 vortec 350 cam options

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Originally Posted by tippmann243 View Post
stock ls2/ls6 springs

i paid 49.99 shipped to my door for 16 new springs and i think 50 for retainers
Ok....if you are going to throw out advice...then give us some p/n's

What retainer did you use?
The LS1's have a 8mm valve stem and the stock retainers only fit the stock locks.

So did you use a Comp 787-16 for std Valves with a 7 degree lock or did you use a 795-16 with 10 degree locks(this will decrease your installed height btw)
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post #13 of 19 Old 07-29-2008, 05:13 PM
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Re: 97 vortec 350 cam options

Quote:
Originally Posted by Formulakid1 View Post
Ok....if you are going to throw out advice...then give us some p/n's

What retainer did you use?
The LS1's have a 8mm valve stem and the stock retainers only fit the stock locks.

So did you use a Comp 787-16 for std Valves with a 7 degree lock or did you use a 795-16 with 10 degree locks(this will decrease your installed height btw)
787-16

-mark
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post #14 of 19 Old 07-29-2008, 07:15 PM
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Re: 97 vortec 350 cam options

hot rod and chevy high performance have both done reviews on the beehive springs for the vortec heads, they both gave a thumbs up for them. if you dont want to go the beehive spring route, you can buy the tool to machine your guides. it is only around 55$. another thing to remember with the vortec heads when going with a big cam or some heavy/strong springs is that the studs are pressed in and have been known to come out on some engines. screw in studs will eliminate that potential issue. just remember that beefing up the build the first time is better/cheaper than building it a second time.
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post #15 of 19 Old 07-29-2008, 08:19 PM
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Re: 97 vortec 350 cam options

Quote:
Originally Posted by tippmann243 View Post
787-16
Hey man....I just reread my post.....and if I came acreoos a lil' harsh, sorry....didn't mean to.
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post #16 of 19 Old 07-29-2008, 10:20 PM
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Re: 97 vortec 350 cam options

Quote:
Originally Posted by Formulakid1 View Post
Hey man....I just reread my post.....and if I came acreoos a lil' harsh, sorry....didn't mean to.
its all good.

-mark
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post #17 of 19 Old 07-29-2008, 11:33 PM
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Re: 97 vortec 350 cam options

I have a comp cams 276 282 duration 502 510 lift
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post #18 of 19 Old 07-30-2008, 12:16 AM Thread Starter
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Re: 97 vortec 350 cam options

Quote:
Originally Posted by trailwart View Post
hot rod and chevy high performance have both done reviews on the beehive springs for the vortec heads, they both gave a thumbs up for them. if you dont want to go the beehive spring route, you can buy the tool to machine your guides. it is only around 55$. another thing to remember with the vortec heads when going with a big cam or some heavy/strong springs is that the studs are pressed in and have been known to come out on some engines. screw in studs will eliminate that potential issue. just remember that beefing up the build the first time is better/cheaper than building it a second time.
I have heard this also...I have always wondered what machining is involved in converting them to screw in studs. wonder why the 4.3L vortec heads had screw in studs yet the v8 didn't.
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post #19 of 19 Old 07-30-2008, 11:56 AM
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Re: 97 vortec 350 cam options

probly done as a cost effective stand point for gm. if it were me i wouldnt chance the push in studs with a high lift or heavy spring rates, but thats just me. the tools for converting to screw in studs can be bought, but a machine shop would probly be the best bet for having it done right.
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