Help With Head Choice
07-07-2010, 07:31 AM
#22
I'm not sure that the hp numbers you have been told are going to be as close as your hoping... I'de say a little closer to 350. the vortec heads are great heads for a budget build but they really need a good port job to shine. Its not hard to make 400 hp w/ vortec heads though. I've seen some make 500 w/ vortec heads and 2 barrel carbs(dirt track engines)
but saying a comp 292 camshaft doesnt give enough info... you can get a couple of different comp 292 cams. is it a hydraulic or solid? which grind? comp has about 5 different grinds of camshafts.
but saying a comp 292 camshaft doesnt give enough info... you can get a couple of different comp 292 cams. is it a hydraulic or solid? which grind? comp has about 5 different grinds of camshafts.
Car Craft did a untouched vortec headed build and made 440 hp with a comp extreme energy grind. Here is the link.
http://www.carcraft.com/techarticles...ine/index.html
Here are the specs on the cam they used.
http://www.compcams.com/Cam_Specs/Ca...x?csid=87&sb=2
07-13-2010, 05:32 AM
#25
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Going by his lift and duration numbers it is the magnum292h grind, it is a flat tappet hydraulic cam. It will make decent power and a good bit more than 350 hp
Car Craft did a untouched vortec headed build and made 440 hp with a comp extreme energy grind. Here is the link.
http://www.carcraft.com/techarticles...ine/index.html
Here are the specs on the cam they used.
http://www.compcams.com/Cam_Specs/Ca...x?csid=87&sb=2
Car Craft did a untouched vortec headed build and made 440 hp with a comp extreme energy grind. Here is the link.
http://www.carcraft.com/techarticles...ine/index.html
Here are the specs on the cam they used.
http://www.compcams.com/Cam_Specs/Ca...x?csid=87&sb=2
so i should be making around the same power at the crank?
07-15-2010, 01:47 AM
#26
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i got my hands on a chevy s10 with a 383 small block in it Kb 10.5.1 compression 488 lift cam air gap manifold 750 carn msd distributor long tube headers camel hump heads turbo 350 with a 4000 stall converter im going to pull the motor out and put it in my el camino and then put my 350 in the s10 and sell all of the rest
the motor in the s10 has o miles besides what i put on it coming home he said it should be making around 360-370hp im wondering if i put my 292h cam and vortec heads on it what kind of power id be making then? im using this motor for a street car im looking to get as close to 400 RWHP as possible
here is a vid of me parking the truck sounds kinda crappy with open headers
http://www.youtube.com/watch?v=gQq_BDPacIs
the motor in the s10 has o miles besides what i put on it coming home he said it should be making around 360-370hp im wondering if i put my 292h cam and vortec heads on it what kind of power id be making then? im using this motor for a street car im looking to get as close to 400 RWHP as possible
here is a vid of me parking the truck sounds kinda crappy with open headers
http://www.youtube.com/watch?v=gQq_BDPacIs
07-17-2010, 02:14 AM
#30
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i already know the heads are not good enough flowing thats why i asked how much more power id make with vortec heads and my 292h cam and it wasnt running very good in the video the idle was too low and it was choking up i started it today and it ran a lot better ill make a new video clip tomorrow
07-21-2010, 10:49 PM
#32
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450 HP is enough for a street car for now at least until i get bored
Im taking my engine compartment down to bare metal then going to paint everything over again...then dropping the motor in the car
ill post pictures of my progress
Im taking my engine compartment down to bare metal then going to paint everything over again...then dropping the motor in the car
ill post pictures of my progress
07-24-2010, 06:53 PM
#33
I have a set of 906 casted vortec heads with ferrea 2.02 1.60 valves comp hyd roller springs 950-16pn good to 575 lift 10* retainers and keepers milled to 57cc chambers and hand ported. Need 500 for the heads. have 1500 miles on them.
Also have the performer rpm airgap intake with arp polished stainless bolts both are only 3 weeks old. Need 600 for heads and intake and bolts together. Intake runners are ported and are gasket matched to heads.
Also have the performer rpm airgap intake with arp polished stainless bolts both are only 3 weeks old. Need 600 for heads and intake and bolts together. Intake runners are ported and are gasket matched to heads.
07-24-2010, 07:34 PM
#34
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I have a set of 906 casted vortec heads with ferrea 2.02 1.60 valves comp hyd roller springs 950-16pn good to 575 lift 10* retainers and keepers milled to 57cc chambers and hand ported. Need 500 for the heads. have 1500 miles on them.
Also have the performer rpm airgap intake with arp polished stainless bolts both are only 3 weeks old. Need 600 for heads and intake and bolts together. Intake runners are ported and are gasket matched to heads.
Also have the performer rpm airgap intake with arp polished stainless bolts both are only 3 weeks old. Need 600 for heads and intake and bolts together. Intake runners are ported and are gasket matched to heads.
07-24-2010, 07:35 PM
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07-25-2010, 12:03 PM
#37
I have a set of 906 casted vortec heads with ferrea 2.02 1.60 valves comp hyd roller springs 950-16pn good to 575 lift 10* retainers and keepers milled to 57cc chambers and hand ported. Need 500 for the heads. have 1500 miles on them.
Also have the performer rpm airgap intake with arp polished stainless bolts both are only 3 weeks old. Need 600 for heads and intake and bolts together. Intake runners are ported and are gasket matched to heads.
Also have the performer rpm airgap intake with arp polished stainless bolts both are only 3 weeks old. Need 600 for heads and intake and bolts together. Intake runners are ported and are gasket matched to heads.
http://www.chevyhiperformance.com/ho...458/index.html
07-25-2010, 05:03 PM
#39
Valve seats are integral in almost all vortec cylinder heads yet some where press in. Mine are integral so they were ground for 2.02 1.60 valves. Car went a 8.32 in the 1/8th but shoulda went more like 8.0 I think it was due to the fact it was 90 degrees out and my hood only clears the carb by a inch and a half or so. Its in a 96 fbody.