12496821 Vortec Manifold For TBI

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Item #: 12496821
Reg. Price: $686.97
Our Price: $633.73
Quantity:
 

 

Cancer and Reproductive Harm

https://www.p65warnings.ca.gov

Description 

12496821 This aluminum small-block Vortec manifold was designed for maximum horsepower with throttle body fuel injection and EGR usage. The manifold will fit all Vortec design cylinder heads (P/N 12529093, 12558060, 12497186, and 12464298).

Technical Notes:To use EGR, the gasses must be plumbed from the exhaust manifold into the intake manifold. Many exhaust manifolds have drilled and tapped holes that can be used to fabricate a tube. An example is the 1996 and later pickup truck with RPO L31 350 engine, which uses exhaust manifold P/N 12557828, EGR pipe P/N 10220275, and fitting P/N 12552329. That combination will fit this manifold for late model pickup trucks. Vacuum controlled EGR valve P/N 19210662can be used on some models.


NOTE: The exhaust manifold from 1996-and-newer pickup trucks with RPO L31 350 engine, P/N 12557828, is drilled and tapped to accept an EGR tube. EGR pipe P/N 10220275 can be used with EGR Valve P/N 19210662 and gasket P/N 12337972. This manifold is primarily intended for use with Vortec heads on pre-1996 engine blocks. Blocks manufactured in 1995 or earlier have thermostat bypass passage from the block directly to the water pump. If manifold is used on 1996 and later engines (which do not have the bypass in the block), you must run a coolant bypass line from the manifold to the 5/8" hose nipple on the water pump (passenger’s side). Suggested routing is from the 3/8 NPSF boss on manifold to the water pump.


Note: 2.5F & 4.5R" tall

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