Restoring American Muscle Car and Classics - we help your engine breath easier!

1968-72 Chevrolet 396 427 454 Big Block Preheater Stove Flange Adapter

$400.00 $375.00

This item is out of stock

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OEM 1968-72 Chevrolet Camaro/Chevelle/Impala/Nova SS 396/427/454 LS3/LS5/L36/L72 Air Cleaner Pre-Heater Stove Flange. This is an original 48+ year-old pre-heater exhaust manifold stove tube adapter specific to the 68-72 396/454 models that has been media blasted to bare metal, then coated with high heat ceramic low gloss black. It retains the square insert with screw hole where the tube adapter inserts into the stove and is retained with a screw. The mounting support is fully intact as well and in excellent condition. Note that the mounting tang changed locations from 68-72 applications, but the stove adapter remained the same.

These are extremely hard to find - especially in near NOS condition. Back when new, these were typically discarded in lieu of presumed performance enhancements (especially once headers were installed). This piece was removed and stored for nearly 50 years and shows that it was hardly used.

PN: 3964265

This piece presents very well and will enhance your restoration. Best of all, it is a rare and genuine GM part! 


For further information on the restoration process, please contact us.



This assembly is correct for the following models:

1968-72 Chevrolet

Camaro SS / Chevelle SS / El Camino SS LS3 396/400 or LS5 454 / Impala SS 427 (68-69)

The assembly is exclusive for cars equipped with 396/427/454 with closed element air cleaners and 71-72 cowl induction cars. It features the 2" pre-heater inlet that attaches to an aluminized inlet hose (not included), then that attaches to the bottom of the snorkel directly below the ThermAC vacuum pod via use of a 90 degree elbow with Wittek clamp. 





The assembly will fit factory original 68-72 Big Block exhaust manifolds. If you have modified your exhaust manifolds, please inquire first prior to bidding to ensure fitment is correct. Return requests for non-fitment will not be honored.





The assembly will ship within one day (usually the day of payment) with shipping/tracking information provided.



This assembly is guaranteed to match the item description – customers have up to 14 days to return the assembly after receipt if it is not as described.



Assemblies must be returned in the original packing – customers are responsible for return shipping charges. A refund will be issued upon receipt of the inspected assembly. Returns for non-fitment will not be honored – please ask questions first.



In the event of shipping damage, customers must save all packaging and send 5 digital pictures so Musclecar Air Cleaners can initiate a shipping damage claim. This item is shipped insured for all destinations.





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