Head swap on SBC 406
03-25-2016, 06:39 PM
#1
Head swap on SBC 406
I currently am running camel hump 291 heads with 1.94/1.6 valves. Curious what would be gained from going from the set of camel hump's to a set of Bowtie Vortecs the "sawtooth" heads I was offered a set complete for $250 need cleaned up and machined though as my cam is .555/551 lift
03-25-2016, 10:12 PM
#2
Le Mans Master
Member Since: May 2002
Location: Lebanon Township New Jersey
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A dramatic improvement for sure and hp increase per dollar would be unbeatable. I have modified Vortec heads on my 383 and I've run 12.15 so there is plenty of potential there.
03-25-2016, 10:15 PM
#3
Just realized they are not bowties, I thought the sawtooth markings stood for bowtie vortecs but they're for the 062 casting heads. I'm just not sure if I should invest in vortec heads. Or hold off until I can get something with bigger runners. Given a 406 is a very large displacement small block.
03-26-2016, 01:39 PM
#5
Racer
I run DART iron eagle 200cc intake, 64cc chamber, 2.02/1.60 on my 406...Love the combination. I am not running as much cam as you are though,--I am running a Comp XR282HR: .510 intake .520 exhaust lift.
With the extra breathing form your higher lift, i think your motor would benefit form a 210 minimum, as Motorhead suggests above...
With the extra breathing form your higher lift, i think your motor would benefit form a 210 minimum, as Motorhead suggests above...
Last edited by keithl1967; 03-26-2016 at 01:40 PM.
03-26-2016, 02:11 PM
#6
Dr. Detroit
Member Since: Mar 2012
Location: New Braunfels Texas
Posts: 9,963
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I also run Dart heads in Aluminum....200cc on a 406.
It absolutely rips....
Save your money for a set....it is worth it....
Jebby
It absolutely rips....
Save your money for a set....it is worth it....
Jebby
03-27-2016, 07:22 PM
#7
Melting Slicks
I went from ported GM 492 angle plug heads with a 66 cc combustion chamber on my 406 to AFR 210 cc runner heads with 65 cc chambers. It was worth over 50 hp!
Last edited by larrywalk; 03-27-2016 at 07:23 PM.
03-27-2016, 09:50 PM
#8
Le Mans Master
Put 210cc AFR's on my 406 which has a similar cam lift profile as yours. It's a Torque monster, and RPM's build quickly. 406CI is a big pump. Don't starve it. Worth the $$ in the long run.
Eddie
Eddie
Last edited by Edzred72; 03-27-2016 at 09:51 PM.
03-27-2016, 10:03 PM
#9
Race Director
