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Author Topic:   vortec intakes
pearl jam3
Member
posted September 25, 2003 07:58 PM
we are making the switch from 461 to vortecs this off season. question is, what is the best intake goin for these things? rules state gm castiron no porting or polishing. how many options is there? also wondering where is the best place to get a set of vortecs that are bolt on race ready?


waltonjr1
Member
posted September 25, 2003 08:59 PM
GM does not make a two barrel intake for vortecs.You would have to get one from brezinski.They do make a cast iron 4 barrel intake.Go to salle-chevrolet.com and search for part number 14097499.Hope this helps.If they do make a 2 barrel cast intake i dont know about it.



Eljojo
Member
posted September 25, 2003 09:33 PM
The intake you'll get from Salle or anywhere else (I got mine at SDPC2000.com) is NOT a GM part. General motors NEVER made a cast iron intake for the Vortec. They make an aluminum one, but no cast iron. The version sold as as a stock appearing intake is a very poor castng and a low quality piece. I went as far as to cut the center divider out of the one I have, trying to improve performance-but it still "ain't much". I am seriously considering selling the entire Vortec package I have. The track here is talking about making them illegal.


racer17j
Member
posted September 25, 2003 10:06 PM
you would probably ber better off haveing the heads machined to the old bolt pattern


waltonjr1
Member
posted September 25, 2003 11:05 PM
Elojo,thanks for the input.Ive never seen one of these intakes sounds like junk huh.Get this, a track in my area allows you to run vortec heads but in the next sentence reads,must be cast iron stock unaltered two barrel intake.Isent this impossible?Sounds like the vortec package is more trouble than its worth.Ive always ran 461 with a marine intake and its worked very well for me.


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DEANJR#22

[This message has been edited by waltonjr1 (edited September 25, 2003).]

Speedway65
Member
posted September 26, 2003 09:15 AM
redrill it for the old intake .If you get a Power Manual from gm it gives you the specs and measurements to do it.we ran that way for about 2 yrs and it works well.Gained about 50 horse on the dyno with a stock set of vortecs.


allan
Member
posted September 26, 2003 09:34 AM
seeing that vortec heads dont have center holes.I cant see enlarging whats not there.Correct me if i'm wrong.


allan
Member
posted September 26, 2003 09:38 AM
maybe this will help

[This message has been edited by Speedway65 (edited September 26, 2003).]

rico 08
Member
posted September 26, 2003 11:03 AM
brezinski sells a two barrel intake and a holley type intake,they are pricey tho,the vortecs all have the 8 bolt pattern,the ones with the center bolts are TBI heads.


pearl jam3
Member
posted September 26, 2003 07:15 PM
thanks for the replys, you have to wonder if these things are worth all the work or better yet youd think these promoters would just let guys run an aftermarket aluminum intake. i am so parinoid that we are gonna spend a chunk of cash on these heads and intake then to be told that they are gonna be outlawed in the next year or two. thanks for the post!


allan
Member
posted September 26, 2003 10:00 PM
Mercruser Marine has a vortec intake that, although I've never seen it, is supposed to be a very sweet piece. It is cast iro, and I believe it is available in the 2 and 4 bbl versions. It is very pricy, but maybe you can get a dealer to sponsor you with an intake.


tilley88
Member
posted September 27, 2003 12:59 PM
I think Mercruiser is the only place that "makes" cast-iron vortec intakes. Everybody buys them from them, Brezinski "modifies" them.


stockcar5
Member
posted September 27, 2003 07:39 PM
dont modify your old intake for the vortecs! use the 4bbl gm intake or use the mercruiser 2bbl intake. both are made by gm for mercruiser. only the 4bbl has a gm part number i believe.

luke

BrianW
Member
posted September 29, 2003 12:10 PM
I've got a 305 Mercruiser with the 2bbl cast iron intake out of the boat - I swear I thought it had a GM part number - I could be wrong though....

If you're needing the 2bbl intake ask around the local boat shops - they sometimes pull them for guys wanting to swap to a 4bbl and sell them 1/2 of new price or better - also check ebay...

Mikey14
Member
posted September 30, 2003 08:29 AM
http://www.sallee-chevrolet.com/Intake_Manifolds/Cast_Iron_Vortec.html

Thats the 4 barrel version.

Some guys have redrilled the heads to fit old style intakes up here. They tell me its a 40-50hp bolt on gain over 882's but I dont know for sure.

tilley88
Member
posted September 30, 2003 11:38 AM
Theoretically, it "should" be a 40-50 hp gain, but if you bolt on one of those low-rise Mercruiser intakes or an earlier GM casting that does'nt line up with the ports, then there goes your gain. I really like the Vortec head except for the lack of a good cast intake and their thin casting. Sure wish Pro Topline or GM would design a good cast intake......


RC Racing
Member
posted September 30, 2003 03:29 PM
If any one's interested, I have an aluminum Vortek intake I'll part with: $60 COD (plus Frieght on Bill)

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