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#1 |
Account Suspended
Join Date: Mar 2003
Location: southern pa
Posts: 698
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vortec heads for sale
From a GMC Denail that was T-boned complete 58K on them. Surfaces cleaned and checked, complete ready to bolt on and go # 12558062 also D228 cast into them. These are the 64cc version $250.00 and they are yours ! You can pick them up at my house. Or i can ship to you I would say $25.00-$35.00 should get them anywhere in the lower 48 states.
pm me for payment/ shipping I am in PA 17329 zip |
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#2 |
This, is my BOOMSTICK!
Join Date: Oct 2003
Location: Berlin, CT
Posts: 1,310
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Here is some info on the heads. Correct me if i'm wrong.
![]() P/N 12558060 L31 350 Vortec Cylinder Heads Small block Vortec heads, the head with huge performance gains that everyone is talking about. This production Vortec iron cylinder head was first used on the 1996 pickup truck RPO L31 with fuel injection. The intake and exhaust port are very similar to Corvette 350 LT1 heads. America's favorite high performance cast iron small block cylinder head offers big power and bigger value. The Vortec cylinder head's fast burn combustion chamber and high velocity ports combine to produce big horsepower out of the box. The Vortec head can be mildly ported for additional performance and can be milled up to .040” for increased compression ratio. This head includes 1.94” intake valves and 1.50” exhaust valves, springs and retainers, and pressed-in 3/8” studs. This head with compatible valves flows more air than bow tie head P/N 10134392, but the casting may not be as durable. It is a 20 to 40 horsepower bolt on increase over earlier cast iron small block heads. The water passages are the same as the original 1955 small block design. The eight-holt intake bolt pattern is totally different than the early model V8 12-bolt design. The Vortec head REQUIRES a Vortec style intake manifold due to its improved manifold mounting flange and gasket design and raised intake ports. It is not recommended that the heads be modified to accept early design intake manifolds (They will never match up right.). Use new manifold P/N 12366573, 12496820, 12496821, 12496822, or any others that we have listed below for correct matching to the Vortec head. Vortec heads fit all small block engines produced 1955 to present, excluding LT1/LT4 reverse coolant flow engines and current LS1 style “GEN 3” engines. Technical Note: The valves seats in these heads can be machined to 2.02” intake and 1.60” exhaust. The rocker arm studs can be pinned or drilled and tapped 3/8”. These heads require the use of self-aligning rocker arms. (Casting P/N 10239906 or 12558062) (65 ft./lbs. head bolt torque) VORTEC CYLINDER HEAD TECHNICAL INFORMATION Part Number: 12558060 Description: L31 with valves Material: Cast Iron Head Bolt Torque: 65 ft./lbs. Valvespring Seat: 1.300” O.D., 0.850” I.D. Valve-guide Seals: Viton rubber positive seals, total 0.450” retainer-to-seal clearance Combustion Chamber Volume: 64 cc Spark Plugs: Straight Heat Risers: No Valvesprings: Single wire with damper 1.235” O.D., 0.875” I.D. 75-pound seat pressure @ 1.700” installed height Coil-bind @ 1.150” Intake Bolt Pattern: Four bolts per side Rocker Arm Style: Self-Aligning Intake Runner Volume: 170 cc Valve Diameter: I: 1.94”, E: 1.50” Casting Numbers: 10239906 and 12558062 Max. Valve Lift: 0.420” which allows 0.030” retainer-to-seal Rocker Stud: Press-in, 3/8” diameter Spark-plug Style: 14 mm, ¾ reach, tapered seat Notes: LT1 Design Port with valves and springs. Click here for a comparison chart of intake and exhaust flows.
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Larry Got rid of my projects for now. 1980 Jeep CJ7 1998 Nissan Sentra (my car) 2001 Toyota Sienna (wife's, of course) Last edited by spencra; 01-26-2005 at 02:10 PM. |
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#3 |
Account Suspended
Join Date: Mar 2003
Location: southern pa
Posts: 698
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You got it ! wow thats alot of info.
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#4 |
Registered User
Join Date: Aug 2004
Location: Idaho
Posts: 640
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PM sent. I'm not sure what "D228 cast into them" means. Any idea on weight, so I can plan on shipping?
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#5 |
Account Suspended
Join Date: Mar 2003
Location: southern pa
Posts: 698
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date
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#6 |
Account Suspended
Join Date: Mar 2003
Location: southern pa
Posts: 698
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SOLD !vortexofpain is the new owner
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