vortec heads and factory aluminum carb intakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Srubydo1986 · 03-23-2008, 07:23 AM

ok guys and gals heres a question for all of you.

My truck has the canted corner center bolts well what i did was bought a edelbrock intake, cause i figured gm never made a carberated intake for those heads. Well my last truck i got had the same engine but had the carb set up and the vortec heads.

By chance anyone know what years makes models any info really so i may go junk yard diving for these intakes (they are factory aluminum) the one i have got broken by a broken bolt in it then drill it out then crack goes the aluminum.

im asking casue the 72 monte now has that engine in it and needs an intake and my buddy is about to do the same conversion. (he got this wield idea of drilling/ wobling out a cast iron intake i tried on a junk one and to no suscess.

bowtiecb · 03-23-2008, 07:58 AM

i have drilled several intakes with no problem,but they where aluminum stock and aftermarket and pre 96 l31 heads

MylilBowTie · 03-23-2008, 08:10 PM

Vortec intakes only have 8 bolt holes. The vortecs don't have center bolt holes. The older intakes are 12 bolt. All enter bolt heads aren't vortec heads although many may call them that. Of the older 12 bolt intakes there are two different ones. The older ones are all angled the same. The newer ones have the four center bolt hole angled different from the rest.

There are a one or two years that had 4 bbl carb aluminum intakes. Those engine had center bolt heads. The heads with the four center intake bolts that are angled different. I have one of those intakes. I believe it was in a 87 grand prix.

Edelbrock 2104 or Summit SUM-226016 will work on early center bolt tbi cylinder heads but not the vortec cylinder heads.

You can modify the older 12 bolt intakes to allow them to work on early center bolt heads. http://67-72chevytrucks.com/vboard/s...d.php?t=180289

Best bet would be to get the cylinder head casting numbers. Find out what cylinder heads you have and get an intake for those heads.

Srubydo1986 · 03-24-2008, 05:24 AM

i have the older 86-88 ish heads where senter bolts are at a different angle. (my 86 has the same motor but i thought id go cheap on bro car cause he doesnt have the cash for an edelbrock intake. and he broke the one i had so i started a surch for another

03-23-2008, 07:23 AM	#1
Srubydo1986 The Crazy Machanic Join Date: Jan 2007 Location: Nokesville Va Posts: 1,437	vortec heads and factory aluminum carb intakes ok guys and gals heres a question for all of you. My truck has the canted corner center bolts well what i did was bought a edelbrock intake, cause i figured gm never made a carberated intake for those heads. Well my last truck i got had the same engine but had the carb set up and the vortec heads. By chance anyone know what years makes models any info really so i may go junk yard diving for these intakes (they are factory aluminum) the one i have got broken by a broken bolt in it then drill it out then crack goes the aluminum. im asking casue the 72 monte now has that engine in it and needs an intake and my buddy is about to do the same conversion. (he got this wield idea of drilling/ wobling out a cast iron intake i tried on a junk one and to no suscess. __________________ 1986 Sliverado longbed 400 small block mean as hell, 700r4 trans (5 speed coming one day) 1970 chevelle 2dr sedan Latest update June 24 2007. *1957 4 door stationwagon - pink all original needing a good restore (body great, floors bad) newest additions 1965 shortbed fleet great granddads. Been told im nuts to bring it back from the dead (still going to happen) plans-all stock with a turbo 292 inline 3 speed column shift. and thats it big block 427 and 5 speed trans and ford 9 inch theyhave no home yet thinking what to put them in and a 79 c60 trash truck um no idea i have one

03-23-2008, 07:58 AM	#2
bowtiecb Registered User Join Date: Oct 2006 Location: alabama Posts: 79	Re: votec heads and factory aluminum carb intakes i have drilled several intakes with no problem,but they where aluminum stock and aftermarket and pre 96 l31 heads Last edited by bowtiecb; 03-23-2008 at 07:58 AM.

03-23-2008, 08:10 PM	#3
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: votec heads and factory aluminum carb intakes Vortec intakes only have 8 bolt holes. The vortecs don't have center bolt holes. The older intakes are 12 bolt. All enter bolt heads aren't vortec heads although many may call them that. Of the older 12 bolt intakes there are two different ones. The older ones are all angled the same. The newer ones have the four center bolt hole angled different from the rest. There are a one or two years that had 4 bbl carb aluminum intakes. Those engine had center bolt heads. The heads with the four center intake bolts that are angled different. I have one of those intakes. I believe it was in a 87 grand prix. Edelbrock 2104 or Summit SUM-226016 will work on early center bolt tbi cylinder heads but not the vortec cylinder heads. You can modify the older 12 bolt intakes to allow them to work on early center bolt heads. http://67-72chevytrucks.com/vboard/s...d.php?t=180289 Best bet would be to get the cylinder head casting numbers. Find out what cylinder heads you have and get an intake for those heads. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

03-24-2008, 05:24 AM	#4
Srubydo1986 The Crazy Machanic Join Date: Jan 2007 Location: Nokesville Va Posts: 1,437	Re: votec heads and factory aluminum carb intakes i have the older 86-88 ish heads where senter bolts are at a different angle. (my 86 has the same motor but i thought id go cheap on bro car cause he doesnt have the cash for an edelbrock intake. and he broke the one i had so i started a surch for another __________________ 1986 Sliverado longbed 400 small block mean as hell, 700r4 trans (5 speed coming one day) 1970 chevelle 2dr sedan Latest update June 24 2007. *1957 4 door stationwagon - pink all original needing a good restore (body great, floors bad) newest additions 1965 shortbed fleet great granddads. Been told im nuts to bring it back from the dead (still going to happen) plans-all stock with a turbo 292 inline 3 speed column shift. and thats it big block 427 and 5 speed trans and ford 9 inch theyhave no home yet thinking what to put them in and a 79 c60 trash truck um no idea i have one



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