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View Full Version : Old style intake on vortec heads ?



Tad
02-25-2011, 12:47 AM
Is it possible to make a non highrise cast intake work on vortec heads ? I have heard that people modify the intake to bolt on, but no details...and I've also heard that it can't be done.

Our rules don't exclude the vortec heads, but they do exclude aluminum intakes. Must be oem cast iron intake, and not be any kind of high rise or marine part.

Any one want to share some experience on this ?

raceman17
02-25-2011, 08:37 AM
I have seen it done before. you have to take the holes on the intake and elongate them so you can get clearance for the bolts to go straight down into the vortec head. I bought an aluminum intake a few years ago that came with some washers/inserts that you could use to bolt the intake down to the vortec heads.

steveshawjr
02-25-2011, 02:58 PM
we have done it you and as 17 has said you have to take the holes on the intake and elongate them so you can get clearance for the bolts to go straight down into the vortec head.

http://www.castheads.com/marine_vortec_2_4_barrel.php

heres a bolt on ready deal but you looking at some $$$$$

keithbaker
02-25-2011, 04:44 PM
Do a seach for part number GM 14097499. It's a stock cast iron vortec intake.

stockcar5
02-25-2011, 07:37 PM
i think eq and rhs both make vortec heads with the old style intake pattern. these would be hard to beat for the price.
http://cgi.ebay.com/ebaymotors/CHEVROLET-5-7L-350-CYLINDER-HEAD-170CC-64CC-69-86-SBC-_W0QQcmdZViewItemQQhashZitem20b51e582dQQitemZ14047 7618221QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccesso ries

ssr1st
02-25-2011, 10:00 PM
drill and tap the heads for the old intake. Price.... FREE
dont expect the ports to match :)

wildchildc200
02-26-2011, 09:07 AM
you can also search junkyards late 86 87 i think 88s some gm cars such as the impala camero and the trucks had a carb still avalible and thus had the cast carberated intake for the vortec style heads. these will have a spread bore pattern

stockcar5
02-27-2011, 09:59 AM
you can also search junkyards late 86 87 i think 88s some gm cars such as the impala camero and the trucks had a carb still avalible and thus had the cast carberated intake for the vortec style heads. these will have a spread bore pattern

those are not vortec heads. vortec heads didnt come out until the 96-up trucks.

21 racer
02-27-2011, 12:40 PM
those are not vortec heads. vortec heads didnt come out until the 96-up trucks.

true! the heads they are talking about or the junk tib heads they dont flow for @#$% true vortecs only have 4 bolts on each side 2 in front 2 in rear that go straight down like a ford intake bolt and you can have the heads redrilled for old style intake