Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

Help With Head Choice

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Old 06-10-2010, 03:54 PM
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Question Help With Head Choice

i have a 350 small block
pete jackson gear drive
292 comp cam
RPM air gap manifold
long tube headers
600cfm carter carb
HEI setup
turbo 400 tci transmission
3.73 gears
3000 stall converter

i was looking for a set of vortec heads but i cant seem to find any

so i was thinking 2nd option camel hump heads

some questions i had though was if i run the vortec heads the only thing that needs to be changed is the manifold right? they can use the same head gaskets and same headers?

how much more power will the vortec heads make over the camel hump heads


and yes i know either way i have to have the valve springs change to work with the cam i have
Old 06-10-2010, 08:17 PM
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Get the Vortec heads, yes you will have to get a Vortec manifold. Also, check the header flange to see if it matches the exhaust ports on the Vortec heads.

Seems that you can get about 400-420 horsepower from that setup.
Old 06-11-2010, 06:41 AM
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If you are pulling a set of Vortecs from the JY, you will need to have a valve job done, guides cut down for the lift, new springs and retainers along with the new manifold. I'd add up that cost and weigh it against a new set of aluminum (or cast iron) heads from the aftermarket.

Leave the double hump heads for the class racers who are forced to use them. They can flow quite well, but the effort and $ adds up quickly.
Old 06-11-2010, 12:03 PM
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I think Scroggin-Dickey sells Vortec heads with already upgraded valve springs.
Old 06-14-2010, 05:29 PM
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yeah they do have them with valve springs already done but they are 400 dollars each i was hoping to get a set of heads on my car for 400 for the pair its gonna be kinda hard to come up with 800 dollars with no job ahhh this sucks!
Old 06-30-2010, 12:16 AM
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ok so im going with a set of vortec heads that are already done 800 for the pair brand new what rocker arms should i use im not looking to spend a ton of money on the rocker arms and will regular head gaskets work on the vortec heads? is there anything else i need to worry about i already have my manifold
Old 06-30-2010, 12:34 AM
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the head gasket will work fine with any sbc head unless it was 400ci and if you cant buy vortec heads get L98 aluminum heads the air gap you got will need some machining for the center bolts just a little bit thou got them in my wrangler and loved them
Old 06-30-2010, 01:28 AM
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ok good glad the head gaskets will work...im just going to get the vortec heads they are $380 each brand new valves are cut down 550 lift springs etc i just need to know what rockers to run with them
Old 06-30-2010, 02:39 AM
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you can run any rockers with them if it has pushrod guide you need non self alignment rockers and if it dont you need self alignment rockers but a friend of mine told me it doesnt matter you wont rev it pass 6800
Old 06-30-2010, 03:22 PM
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ok cool im just going to go with some roller tip rockers then should i go with 1.5 or 1.6 ? im not sure if im able to run 1.6 if anyone knows if i can or not that would help me out a lot and also what the lift would be with a 1.6
Old 06-30-2010, 04:00 PM
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whats the cam specs? some people go with 1.5 for daily use and some use the 1.6 without any problems Im running the factory ones with LT4 hot cam and so far no problems thank God
Old 06-30-2010, 04:16 PM
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244/244 501/501 comp 292 cam
Old 06-30-2010, 04:22 PM
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Originally Posted by LoStOCeAnZ63
550 lift springs
you can run 1.6 rockers your lift will be .534/.534 you will be at the safe side
Old 07-06-2010, 12:11 AM
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how much power do you think ill be making and what track time should i expect if i can get my car to hook
Old 07-06-2010, 12:41 AM
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I'd say around 400-425 at engine
Old 07-06-2010, 01:22 AM
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so mid 12's
Old 07-06-2010, 12:12 PM
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Originally Posted by F-Body Lover
the head gasket will work fine with any sbc head unless it was 400ci and if you cant buy vortec heads get L98 aluminum heads the air gap you got will need some machining for the center bolts just a little bit thou got them in my wrangler and loved them
L98 heads are more expensive than the vortec heads and don't flow as well

Originally Posted by LoStOCeAnZ63
ok good glad the head gaskets will work...im just going to get the vortec heads they are $380 each brand new valves are cut down 550 lift springs etc i just need to know what rockers to run with them
1.6:1 rockers you can get the comp self aligning, but on the cheap I bought proform 1.6 rockers and had them on my Impala SS and ran that up 130mph in that car very often with no issues.

Originally Posted by F-Body Lover
you can run any rockers with them if it has pushrod guide you need non self alignment rockers and if it dont you need self alignment rockers but a friend of mine told me it doesnt matter you wont rev it pass 6800
If you have guide plates which I doubt on iron vortecs, you can use a regular rocker. All vortec headed motors I worked on I used self-aligning rockers. You need to stop listenening to your friend.

Originally Posted by LoStOCeAnZ63
ok cool im just going to go with some roller tip rockers then should i go with 1.5 or 1.6 ? im not sure if im able to run 1.6 if anyone knows if i can or not that would help me out a lot and also what the lift would be with a 1.6
Get a full roller rocker on a 1.6:1

Originally Posted by LoStOCeAnZ63
so mid 12's
More like in the 11's if you hook well and the car is light.
Old 07-06-2010, 05:41 PM
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im not sure if im going to be able to afford full roller rockers right now but well see i guess

11's would be nice but im not going to get my hopes up the car is a 1966 el camino so its most likely around 3500 + the only thing thats lighter then stock are pro star wheels and fiberglass inner fenders haha
Old 07-06-2010, 10:44 PM
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I'm not sure that the hp numbers you have been told are going to be as close as your hoping... I'de say a little closer to 350. the vortec heads are great heads for a budget build but they really need a good port job to shine. Its not hard to make 400 hp w/ vortec heads though. I've seen some make 500 w/ vortec heads and 2 barrel carbs(dirt track engines)

but saying a comp 292 camshaft doesnt give enough info... you can get a couple of different comp 292 cams. is it a hydraulic or solid? which grind? comp has about 5 different grinds of camshafts.
Old 07-07-2010, 12:25 AM
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Originally Posted by 87silverbullet
If you have guide plates which I doubt on iron vortecs, you can use a regular rocker. All vortec headed motors I worked on I used self-aligning rockers. You need to stop listenening to your friend.
not every country got the same set up in my country they just remove the guide plates and put large pushrods and they didnt even bend one pushrod or broke a rocker but putting guide plates back is safe side its like the saying "better safe than sorry"


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