WebMar 20, 2006 · The -416's are more smog shaped likw W/P's Torquers whereas the -601's are double-quenched and shaped a whole lot like the old -461 double-hump fuelie heads! Both good heads, but I lean towards the -601's. And cc them regardless so you know exactly how big their chambers are!! They both should have about 160 cc intake ports!!
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WebNov 10, 2024 · Jeff be careful and do some reading about taking out the hump in the intake port. I used to think that with the oval port heads but from what I have been told it is the same as the old dog leg ports that AMC used to have. ... But I have ran the old school 350" with ported double humps that flowed 225 in-185 ex @ .500" lift and ran that car in ... http://speed.academy/10-myths-of-cylinder-head-porting/ church of latter day saints online service
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WebJul 27, 2009 · -Bowl porting about $200-$350 depending on who does it (most people could do it their self) -Valve Job $175 to $275 If you were doing a street build with 9.5:1 compression you dont need stainless valves, When they … WebAug 12, 2024 · Double-hump heads were offered up through the 492 head that was featured on the 350ci LT1 engine in the early ‘70s. Then, emissions concerns forced lower compression ratios, and there was no need for a high-performance, iron production cylinder head until trucks needed more power in the ‘90s when the Vortec head was developed. WebMar 13, 2012 · Vortec vs Double Hump Hi, I just did this swap. I took off my 186 double humps and put on a set of EQ Vortecs. Sold the double humps to a buddy who builds rat rods. I did some home porting to the vortecs and put them on my stockish 406 with a Lunati Voodoo 60103 cam. Dropped the motor in this weekend and am finishing up the install. dewar niagara falls ont