Vortec Headed 355
#1
Registered User
Thread Starter
Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
Vortec Headed 355
My son was able to get to the track with his 355 Camaro recently, very similar type of build as Copper Cutlass's type of build but the Chevrolet version. His combination used a unported L31 Vortec head, 1.940/1.500 valves, .435/.460 lift hyd flat tappet cam, with a Diamond dished piston. Intake was a Vortec Super Victor with a 750 Holley. Track conditions were: 98 degrees, 120 grains of water, 29.20 barometer, 3200 feet DA, I was very happy with his first outing. Its worth pointing out the Vortec headed 350 can be be a stout low dollar power maker for sure. This fall when he can get into some very good conditions I will report back. 1/8 mile times. BTW running weight is a light weight 3200 pounds.
1.373 60 foot
6.81 660
97.5. MPH
1.373 60 foot
6.81 660
97.5. MPH
Last edited by VORTECPRO; June 10th, 2022 at 04:28 AM.
#5
Registered User
Thread Starter
Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
#6
Vortecs have a reputation of being able to handle some compression with only pump gas so why a dish with only 355 cubes ? I guess I should inquire what the actual compression is and perhaps I'll have my answer !? What fuel is he on ?
Definitely respectable times, what would be your/his next change on this engine - if any, or the car ?
Definitely respectable times, what would be your/his next change on this engine - if any, or the car ?
#7
Registered User
Thread Starter
Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
This Camaro was built to run in IHRA G/CM class. G crate is: the GM performance 330 HP Vortec headed 350, it must use the factory type piston which has a dish. The cam must also be factory lift which is .435/.460 hyd flat tappet.
#8
#9
Registered User
Thread Starter
Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
UPDATE
Had the Camaro out Sunday, went 10.79 @ 121.39 with a horrible 1.42 60, 7700 RPM through the lights, new tires next, looking for 10.60s, trans overhaul then 10.5s.
Had the Camaro out Sunday, went 10.79 @ 121.39 with a horrible 1.42 60, 7700 RPM through the lights, new tires next, looking for 10.60s, trans overhaul then 10.5s.
Last edited by VORTECPRO; October 31st, 2022 at 06:05 AM.
#11
Registered User
Thread Starter
Join Date: Aug 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 1,719
Thread
Thread Starter
Forum
Replies
Last Post