EQ 350C Chevy Vortec Cast Iron Cylinder Heads
Updated on Thursday, 4/11/24.
- We have reached an agreement with a company in South Dakota on the sale of our Vortec, Engine Quest 350C Vortec, Vortec Bow Tie and Dart SS cylinder head programs, machinery and processes. More details to come soon. They should be up and running and supplying heads as soon as May 1, 2024.
- Until the transition is complete, we will continue to supply our Look-a-Like valve springs, retainers, locks, Bottle Cap Bottom Kits and Crate Master Camshafts. These items are available from our website or give us a call.
In stock from, the Engine Quest 350C Vortec heads is basically the same in the performance department as the currently available new, new factory Chevy Vortec heads, which is sometimes available from Chevy under part number 12691728 On the outside, It resembles the Chevy ‘906 Vortec head.
Stock air flow of the 350C heads is 200 to 205 range on the intake 140 on the exhaust. These are not good numbers for a racing engine. However, with our CNC “UnderCover Porting”, the air flow increased to 230 to 235 intake and 160 on the exhaust with 1.94 x 1.50 valves.
Straight plug design. This head is bit heaver duty than the production Chevy Vortec head.
