ETP 215* H/C results - Pictures
#21
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Bad bitch, I have some very similar number I need to post using the 215 ET heads and a 232/236 cam.
Little bit more power then you a little less torque.
I will post some more info in the next couple days.
Here's a little teaser.
Picked up 60 RWHP going ET 215's and fast 90/90 over the before combo with LS1 ported heads and a fast 78/78 combo.
Same cam, same everything else.
Little bit more power then you a little less torque.
I will post some more info in the next couple days.
Here's a little teaser.
Picked up 60 RWHP going ET 215's and fast 90/90 over the before combo with LS1 ported heads and a fast 78/78 combo.
Same cam, same everything else.
#22
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your cam seems odd, also I noticed you have 640 lift on the intake? unless your springs have been changed you might be binding the factory springs, I think they are good for 620 max... did you put the dowel pins in the rails also?
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Originally Posted by JZ'sTA
Bad bitch, I have some very similar number I need to post using the 215 ET heads and a 232/236 cam.
Little bit more power then you a little less torque.
I will post some more info in the next couple days.
Here's a little teaser.
Picked up 60 RWHP going ET 215's and fast 90/90 over the before combo with LS1 ported heads and a fast 78/78 combo.
Same cam, same everything else.
Little bit more power then you a little less torque.
I will post some more info in the next couple days.
Here's a little teaser.
Picked up 60 RWHP going ET 215's and fast 90/90 over the before combo with LS1 ported heads and a fast 78/78 combo.
Same cam, same everything else.
After I get the valve spring issue taken care of it will probably make low to mid 460's. Remember, this is going through a C5 drivetrain which is less efficient then f-bodys. I still have some supporting mods that can put me in the 470 range!
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Originally Posted by Nickn20
your cam seems odd, also I noticed you have 640 lift on the intake? unless your springs have been changed you might be binding the factory springs, I think they are good for 620 max... did you put the dowel pins in the rails also?
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Originally Posted by CNB
That should make good power. Let us know the results.
#33
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What valve instability do you speak of? Float? Are you running stock rockers?
What .650 springs are you running? installed height? open lb? seat lb?
I wonder if the valves are 'heavy'?
hrmmm... only reason I so curious is that I am getting some 215s here shortly w/ .650 springs and I would like to nip that problem before I have it.
What .650 springs are you running? installed height? open lb? seat lb?
I wonder if the valves are 'heavy'?
hrmmm... only reason I so curious is that I am getting some 215s here shortly w/ .650 springs and I would like to nip that problem before I have it.
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Yes I'm talking about valve float and I reused the stock rockers. I using comp 977 springs that ETP installed on the heads. I was told I might have to shim the springs when using a cam with high lift like mine. This cam should pull to 6800 rpm easily but you can see it doesn't. That problem will be gone once I shim the springs.
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Originally Posted by CNB
Yes I'm talking about valve float and I reused the stock rockers. I using comp 977 springs that ETP installed on the heads. I was told I might have to shim the springs when using a cam with high lift like mine. This cam should pull to 6800 rpm easily but you can see it doesn't. That problem will be gone once I shim the springs.
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Thunder told me the same thing. Maybe they should tell ETP to stop using 977s as an upgrade and use 921s instead. I have to decide on shiming my current springs or replacing them with Comp 921s.
#37
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In their day Comp 977s were considered pretty killer. I'd try shimming them first. They'll last longer that way anyway (because you'll eliminate spring surge).
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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What spring do you have in your heads?
I think my ET heads are having issues with valve control also.
I have stock lifter with the 977 spring upgrade.
I maybe changing to Morel and PSI spring upgrade.
There is a lot more weight with the longer valves and pushrods.
I think my ET heads are having issues with valve control also.
I have stock lifter with the 977 spring upgrade.
I maybe changing to Morel and PSI spring upgrade.
There is a lot more weight with the longer valves and pushrods.