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11-19-2003, 02:46 AM
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#1 |
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Pronounced "Pew-al-up"
Join Date: Oct 2002
Location: Puyallup, Washington
Posts: 845
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Heads
Will 1990 heads work on a 1970 sb 350??
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Classic GM Trucks of Washington Club Member 1970 FS chevy,350/350, Edelbrock cam and intake. Holley 650 carb,HEI,AT,Tangier Orange, 18's, Power Locks, Truck Photos |
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11-19-2003, 02:04 PM
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#2 |
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Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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Will work but you will need a manifold to fit the vortec heads.
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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11-19-2003, 02:10 PM
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#3 |
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Wiseass secured himself a BAN
Join Date: Nov 2000
Location: MOON!!!
Posts: 2,282
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Yep it will and yes you will need a intake manifold that fits to Vortec heads. You may need to get some headers or exhaust manifolds for them to....
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11-19-2003, 02:35 PM
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#4 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,857
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I thought Vortec heads came out in 95' or 96'.
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Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads |
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11-19-2003, 03:22 PM
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#5 |
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Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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70c10 is right....Vortec's were first used in '96.
If they are '90 model heads, they aren't vortecs. The intake is still different than the old style '55-'86 SBC though....you will need a special carb'd intake manifold for the '87-'95 heads. I *think* edelbrock makes one, if not if you search junkyards enough, some old Chevy cop cars had the late model heads, and a factory allumium 4-bbl intake. My friend had such an intake on a '76 C10 with a '89 305 in it. BTW, you will also need centerbolt valve covers, and your current exhaust will bolt right up. You might need self-alliging rocker arms too, but i'm not sure completely on that 
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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11-19-2003, 03:57 PM
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#6 |
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Pronounced "Pew-al-up"
Join Date: Oct 2002
Location: Puyallup, Washington
Posts: 845
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Thanks for the feedback. I was facing either rebuilding my heads or finding a newly rebuilt set. I sent mine to the machine shop today to get a new grind, guides and hardened seats!!
There is a guy on the 88-98 board selling a set of freshly rebuilt 1990 heads for $240 to your door. Thought it was a good price, but I already havce a new intake for our style heads.. Thanks again!! 
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Classic GM Trucks of Washington Club Member 1970 FS chevy,350/350, Edelbrock cam and intake. Holley 650 carb,HEI,AT,Tangier Orange, 18's, Power Locks, Truck Photos |
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11-19-2003, 08:48 PM
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#7 |
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Registered User
Join Date: Feb 2002
Location: Moore OK 73160
Posts: 974
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you don't need self aligning rockers if you put guide plates in. the 2 center bolt holes are at a different angle then the old heads but all that takes to cure is a little creative grinding/drilling
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04 GMC Sierra RCSS 70 CST LWB 04 HD Sportster 1200 Custom |
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11-20-2003, 05:12 AM
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#8 |
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Registered User
Join Date: Oct 2003
Location: Carmichael, California
Posts: 3,006
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don`t but those heads. the intake port necks down from stock size to really small. save your money and buy some vortec heads. should be able to find a set for around $175-$200. i think they are only about $450 per pair new. they are a great head.
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Anthony |
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