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Old 03-07-2010, 06:15 PM
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Sbc Question

Can I Use Self Aligning Rocker Arms (vortec Type) On A Non Vortec Head (like 882's) ? Thank You, Roger

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Old 03-07-2010, 06:54 PM
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They make aftermarket self -aligning rockers for older style heads, but I don't think you can use Vortec rockers on older heads.

The heads might could be modified to work with them, but that seems expensive and pointless.
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Old 03-07-2010, 07:01 PM
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Quote:
Originally Posted by 1951flames1
Can I Use Self Aligning Rocker Arms (vortec Type) On A Non Vortec Head (like 882's) ? Thank You, Roger
Yes, you will just have to drill out the pushrod guide slot in the head so that it no longer guides the pushrod. Same proceedure you would use if you were adding guideplates to the 882 head.
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Old 03-07-2010, 07:13 PM
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sbc question

i was just thinking i could us the roller rockers i have for the vortec on the heads i have on the car i just bought. looks like its not just a bolt on deal.
thanks.
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Old 03-07-2010, 07:25 PM
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It IS a bolt-on deal, but like Eric said, you have to enlarge the pushrod guide holes in the heads so that the pushrods are not guided by those holes anymore. The pushrods should not even touch the head anywhere if you use rail rockers.
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Old 03-07-2010, 07:28 PM
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You just can't have "conflicting" guide schemes- either SA rockers OR guide plates OR the OEM p-rod guides in the heads- but only one of these can be used safely at a time, or binding and very rapid wear (and probably a failure) can occur.
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Old 03-07-2010, 07:52 PM
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sbc question

ok, thanks. have another question. the car i just got has a 327 fresh mild build
small cam probley one up from stock, like a edelbrock prefomer. i have a tri power set up offy. manafold stromburg 48's progressive linkage, front and rear carbs are dumpers. it has crappy heads 624's.
i was thinking i wanted to put patroit vortec heads on it 185 runner 202 160 valves, with 1.6 roller rockers. the 64 c.c. heads should bump my c.r. to 9.5 10 to one. it has a th.350 stock converter 3.55 gears in about a 2400# 35 ford street rod.
question is, will this set up work or are the heads too big for it? will the try power support the set up? just looking for street rod performance.
thanks, roger
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Old 03-07-2010, 07:57 PM
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Quote:
Originally Posted by 1951flames1
ok, thanks. have another question. the car i just got has a 327 fresh mild build
small cam probley one up from stock, like a edelbrock prefomer. i have a tri power set up offy. manafold stromburg 48's progressive linkage, front and rear carbs are dumpers. it has crappy heads 624's.
i was thinking i wanted to put patroit vortec heads on it 185 runner 202 160 valves, with 1.6 roller rockers. the 64 c.c. heads should bump my c.r. to 9.5 10 to one. it has a th.350 stock converter 3.55 gears in about a 2400# 35 ford street rod.
question is, will this set up work or are the heads too big for it? will the try power support the set up? just looking for street rod performance.
thanks, roger
The main problem I see, is the Vortec ports are so high that "regular" intakes often don't seal well at all.

You'd probably do better w/ a set of RHS heads (for example) w/ standard (not Vortec) intake port locations.
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Old 03-07-2010, 08:05 PM
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sbc question

i was thinking the patriot vortec because they are only about 700.00 assembled and drilled for both intakes and valve covers. i like the vortec head design, and don't think anyone makes a vortec tri power intake. maby i'll check into some other low priced iron heads.
thank you, roger
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Old 03-07-2010, 08:11 PM
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Quote:
Originally Posted by 1951flames1
i was thinking the patriot vortec because they are only about 700.00 assembled and drilled for both intakes and valve covers. i like the vortec head design, and don't think anyone makes a vortec tri power intake. maby i'll check into some other low priced iron heads.
thank you, roger
There are some competition-type (raised port) intakes that could cover the Vortec ports. Usually not enough meat on the older, non-high performance type intakes to work right, though.

I'd be kind of surprised if there wasn't a Vortec-specific intake for tri power.
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Old 03-07-2010, 08:15 PM
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Quote:
Originally Posted by 1951flames1
i was thinking the patriot vortec because they are only about 700.00 assembled and drilled for both intakes and valve covers. i like the vortec head design
I'll make the same statement to you that I made to V8hed in another thread....
"The name Vortec has been bandied about forever by everyone and his uncle. Just because it says Vortec on it or someone refers to it as Vortec doesn't mean it will perform up to the standards of the original RPO L31 "5700 Vortec" Chevrolet production cylinder heads, casting numbers 10239906 and 12558062."
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Old 03-07-2010, 08:22 PM
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sbc question

might just stick with my first idea, find a nice set of hump heads. should be able to get a bolt no ready set for 400.00 to 600.00. just like the vortec's so much, such a nice head design for the price.
roger
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Old 03-07-2010, 08:32 PM
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Quote:
Originally Posted by 1951flames1
might just stick with my first idea, find a nice set of hump heads. should be able to get a bolt no ready set for 400.00 to 600.00. just like the vortec's so much, such a nice head design for the price.
roger
The old fulie heads still have panache- especially on a "period correct" open-hooded rod.
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Old 03-07-2010, 08:34 PM
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sbc question

i'm just talking vortec design. the after market heads probly flow better than the 31's gm made and designed. if it wasn't for wanting the tri power, i'de just get a package deal from one of the supliers and be done with it for around a grand.
roger
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Old 03-07-2010, 08:37 PM
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sbc question

thats probly the way i'll go. i'll just keep an eye out for a pair.
roger
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