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[Z06] 700rwhp all motor project for my Z by one the best in business-Cunningham Motorsports
C6 Corvette ZR1 & Z06General info about GM’s Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
The problem is the affects of prolonged idling. Lubrication proves inadequate to keep the needle bearings oiled adequately at low RPMs. Initially, the solid roller was designed for 1/4 mile runs, not worrying about extended idle times. As it's popularity increased for street driven vehicles the design flaws for prolonged idling started to surface. The lifters actually came apart and threw needle bearing and steel fragments throughout the engine. In a lot of cases causing sever engine damage. In later years and more so in recent years several manufacturers have produced solid roller lifters that are more street friendly, although still not having the longevity of hydraulic roller lifters. There are still solid roller lifters manufactured today that don't have the ability to survive prolonged idle times. The LS7's extremely light valve train allows the hydraulic roller to resist pumping up (valve float) well past 7K rpms. Other OHV engines (non-race) typically have heavier valve trains and benefit quite a bit more from a solid roller over the LS7.
HA! NEVER AGAIN! I was told to contact Carlos to setup that appointment (its misleading cause he works with both of them i suspect) and he put in bed with their next door neighbors (HPP I think). Long & short of it is... I brought newly dealer purchased Z06 to "them" and they broke all kinda of shxx on my car. Got pics to prove it. Plus they NEVER got my tune right. Shxx kept cutting off and check engine light keep resurfacing. I never blogged about it cause i didnt want to even think about that experience again! I got another shop to fix their f ups and moved on.
...but thanks for the suggestion.
Last edited by starchedup; 01-28-2016 at 04:12 PM.
HA! NEVER AGAIN! I was told to contact Carlos to setup that appointment (its misleading cause he works with both of them i suspect) and he put in bed with their next door neighbors (HPP I think). Long & short of it is... I brought newly dealer purchased Z06 to "them" and they broke all kinda of shxx on my car. Got pics to prove it. Plus they NEVER got my tune right. Shxx kept cutting off and check engine light keep resurfacing. I never blogged about it cause i didnt want to even think about that experience again! I got another shop to fix their f ups and moved on.
I do but "Quality Motorsports" uses HPP's dyno. They didn't have their own and they cant tune for shxx! No way in this WORLD will i let them plug into my Z. Not in a MILLION FREAKING YEARS!
The problem is the affects of prolonged idling. Lubrication proves inadequate to keep the needle bearings oiled adequately at low RPMs. Initially, the solid roller was designed for 1/4 mile runs, not worrying about extended idle times. As it's popularity increased for street driven vehicles the design flaws for prolonged idling started to surface. The lifters actually came apart and threw needle bearing and steel fragments throughout the engine. In a lot of cases causing sever engine damage. In later years and more so in recent years several manufacturers have produced solid roller lifters that are more street friendly, although still not having the longevity of hydraulic roller lifters. There are still solid roller lifters manufactured today that don't have the ability to survive prolonged idle times. The LS7's extremely light valve train allows the hydraulic roller to resist pumping up (valve float) well past 7K rpms. Other OHV engines (non-race) typically have heavier valve trains and benefit quite a bit more from a solid roller over the LS7.
I'll say this...just like hydraulic roller cams, not all solid roller cams are created equal. You can't apply a generalization like that, across the board. I'm guessing you're referencing threads on speedtalk, where people are talking about needle bearing failures?
Of course running 1000# of open load pressure, on a small lifter wheel/needle bearings is going to wear them out quickly, no question...but you don't have to go to that extreme.
I'd much rather have a mild solid roller setup, than an extreme hydraulic one. The solid will be more stable, idle better, and make more power across the board. It isn't just lifter "pump up" that is a problem with hydraulic setups...it is overall inconsistent plunger height, during operation. Quick valve action, and increased spring pressure can exceed the lifters ability to always remain in correct "adjustment", even with light weight components.
BTW, the needle bearings in my OEM LS7 hyd lifters wore out by 30k miles...most likely due to aggressive cam lobes. I was told by the cam grinder, that I shouldn't be idling the engine for extended periods...Not sure I think that is what caused the failure, but that is for a different thread.
I do but "Quality Motorsports" uses HPP's dyno. They didn't have their own and they cant tune for shxx! No way in this WORLD will i let them plug into my Z. Not in a MILLION FREAKING YEARS!
Umm Quality has their own dyno in the shop, HPP is a few miles down the street.
OP, i'm looking forward to seeing your numbers... I'll have my numbers before you and I will let you know what my puts down by Friday evening or Saturday for sure. I have an ERL 454, BIG hydraulic cam, with 12.5 to 1 compression, ported Fast intake & NW TB, 1000ID/ 95lbs injectors on E85 all the usual goodies....
I'm expecting 660-670whp. I'm told for me to hit 700 I will likely need a vacuum pump but that's another thousand dollars and it can wait...
Stay tuned 👍🏾
My actual motor before installation
Dirty due to being in the shop for so long
How big is your cam?
Curious to see how well it does. I have an ERL 434 and make 580ish rwhp with an LS7 intake and cats, 12:2 and pump gas. If you're running E85, why didn't you bump up the compression? Thats free power.
How big is your cam?
Curious to see how well it does. I have an ERL 434 and make 580ish rwhp with an LS7 intake and cats, 12:2 and pump gas. If you're running E85, why didn't you bump up the compression? Thats free power.
When I had my motor built I wasn't really thinking about E85 and my heads were done way before the motor. Now I can bump my compression by just switching out my heads which I may do it some point. I don't know maybe what 13.5 or 14 to 1? What do you think?
My cam specs: 254/264, lift 663/664, LSA 111+4
Originally Posted by Millenium Z06
Umm Quality has their own dyno in the shop, HPP is a few miles down the street.
When I had my work done there it was in 2010 and they were basically across the way from each other- in the same parking lot area
Last edited by starchedup; 01-29-2016 at 05:18 PM.
When I had my motor built I wasn't really thinking about E85 and my heads were done way before the motor. Now I can bump my compression by just switching out my heads which I may do it some point. I don't know maybe what 13.5 or 14 to 1? What do you think?
My cam specs: 254/264, lift 663/664, LSA 111+4
When I had my work done there it was in 2010 and they were basically across the way from each other- in the same parking lot area
Man, if I had an E85 setup and could get E85 like we can (at every Kroger), I'd run as much compression as I could, 13-14:1.
Your cam is similar to mine, 250/258 .652 113+4 on LSL lobes. Your only problem will be the intake, E85 will give you a good bump in TQ and a little HP but its going to be tough to hit 660 wheel with that intake N/A. John B had to go to a sheet metal intake to make power. The ERL rotating assembly will cost you some power too, that forged BE is strong but its also heavy compared to stock. That eats up a good 20-30 hp all things equal, same thing for the OP. The stock LS7 rotating assembly is very light compared to callies crank and rods and forged pistons.
01-28-2016, 11:40 AM
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