c5 z06 Cam install...
#1
Heel & Toe
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c5 z06 Cam install... no power gain!!!
hey guys, i own a 2003 z06 with about 30,000 miles on it. After reading about the phenomenal power gains a corvette gains from a Camshaft upgrade, i decided to go down to my buddies shop and make arrangements to order/install an upgraded Cam, rockers, and springs for my z06.
prior to the install, the car but down 357rwhp and after the installation of the cam and springs (no rockers yet, the wholesaler sent the incorrect rockers) it put down 362rwhp without any tuning what so ever.
the specs on the parts are:
Camshaft: .540/.549 lift. 218/228 on a 114...
Springs: Beehive springs 313 C pressure.
Rockers: Harland Sharp
Is it typically normal to see such little horsepower gain with no tuning done and no rockers installed? if not, what could the problem possibly be? it DOES idle a bit rigorously, and revs much faster, but why such a minor horsepower gain?
prior to the install, the car but down 357rwhp and after the installation of the cam and springs (no rockers yet, the wholesaler sent the incorrect rockers) it put down 362rwhp without any tuning what so ever.
the specs on the parts are:
Camshaft: .540/.549 lift. 218/228 on a 114...
Springs: Beehive springs 313 C pressure.
Rockers: Harland Sharp
Is it typically normal to see such little horsepower gain with no tuning done and no rockers installed? if not, what could the problem possibly be? it DOES idle a bit rigorously, and revs much faster, but why such a minor horsepower gain?
Last edited by alleyezonmyZ06; 03-18-2010 at 04:44 PM.
#3
Pro
hey guys, i own a 2003 z06 with about 30,000 miles on it. After reading about the phenomenal power gains a corvette gains from a Camshaft upgrade, i decided to go down to my buddies shop and make arrangements to order/install an upgraded Cam, rockers, and springs for my z06.
prior to the install, the car but down 357rwhp and after the installation of the cam and springs (no rockers yet, the wholesaler sent the incorrect rockers) it put down 362rwhp without any tuning what so ever.
the specs on the parts are:
Camshaft: .540/.549 lift. 218/228 on a 114...
Springs: Beehive springs 313 C pressure.
Rockers: Harland Sharp
Is it typically normal to see such little horsepower gain with no tuning done and no rockers installed? if not, what could the problem possibly be? it DOES idle a bit rigorously, and revs much faster, but why such a minor horsepower gain?
prior to the install, the car but down 357rwhp and after the installation of the cam and springs (no rockers yet, the wholesaler sent the incorrect rockers) it put down 362rwhp without any tuning what so ever.
the specs on the parts are:
Camshaft: .540/.549 lift. 218/228 on a 114...
Springs: Beehive springs 313 C pressure.
Rockers: Harland Sharp
Is it typically normal to see such little horsepower gain with no tuning done and no rockers installed? if not, what could the problem possibly be? it DOES idle a bit rigorously, and revs much faster, but why such a minor horsepower gain?
#5
Heel & Toe
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i do not have any other mods on the car yet, a carbon air intake bridge, but aside from that it's stock.
after doing some research, i came to realize billf6531 is probably correct with his proposition towards my issue.
Stock cam specs are: .551/.547 lift, 204/218 - 117.5 LSA
My "upgrade" specs are: .540/.549 lift, 218/228 - 114 LSA
i assume the shop that ordered the part and did the install did not specify that it is a 02-04 z06 and ordered the camshaft and rockers for a 2001 z06 considering the wrong rockers were also sent.
the 2001 z06 stock cam specs are: .525/.525 lift, 204/211 duration - 116 LSA, so in essance, my "upgrade" would be feasable for a 2001 LS2.
so i guess my next step is to contact the wholesaler where the shop ordered the cam from and see exactly what was ordered for my car... i am open for any other suggestions or reasons for my break even horsepower cam upgrade ... thanks
after doing some research, i came to realize billf6531 is probably correct with his proposition towards my issue.
Stock cam specs are: .551/.547 lift, 204/218 - 117.5 LSA
My "upgrade" specs are: .540/.549 lift, 218/228 - 114 LSA
i assume the shop that ordered the part and did the install did not specify that it is a 02-04 z06 and ordered the camshaft and rockers for a 2001 z06 considering the wrong rockers were also sent.
the 2001 z06 stock cam specs are: .525/.525 lift, 204/211 duration - 116 LSA, so in essance, my "upgrade" would be feasable for a 2001 LS2.
so i guess my next step is to contact the wholesaler where the shop ordered the cam from and see exactly what was ordered for my car... i am open for any other suggestions or reasons for my break even horsepower cam upgrade ... thanks
#8
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so heres the update. i had the shop do a re-grind on my cam, the new cut is:
Degree of Duration @ 0.50: 234* intake, 236* exhaust
Lift: 0.586 intake, 0.586 exhaust
LSA: 114
Without a tune, it put down 393 rwhp... it should be going back in for tuning in a week or so when the shop gets the proper software for the car. This sounds like a lot more practical gain (36rwhp) as opposed to the 5 rwhp it initially gained the first time around.
ill keep the forum posted with numbers after the tune. Thanks for the help and suggestions
Degree of Duration @ 0.50: 234* intake, 236* exhaust
Lift: 0.586 intake, 0.586 exhaust
LSA: 114
Without a tune, it put down 393 rwhp... it should be going back in for tuning in a week or so when the shop gets the proper software for the car. This sounds like a lot more practical gain (36rwhp) as opposed to the 5 rwhp it initially gained the first time around.
ill keep the forum posted with numbers after the tune. Thanks for the help and suggestions
#11
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so, i have come to conclude this car now needs to be tuned. i am in southern california, 91208 zip code.
does anyone know of a reputable, yet fair priced shop in my area that has experience tuning a cammed z06?
also, after a tune, how much rwhp should i anticipate to gain?
-thanks
does anyone know of a reputable, yet fair priced shop in my area that has experience tuning a cammed z06?
also, after a tune, how much rwhp should i anticipate to gain?
-thanks
#13
Tech Contributor
Wow - I would probably find a different "shop" to get your Corvette worked on. Whoever spec'd that first cam just didn't know much about upgrading an LS engine. Then in post #8 you are waiting for the shop to "get the proper software" to tune your car. You definitely don't want them learning how to tune on your car. It takes a lot of knowledge and time to learn how to properly tune a car. Being a cam only car, you could easily send your ECM to one of the forum tuners for their "mail order" tune if you can't find a compentent person in your area.
#15
Wow - I would probably find a different "shop" to get your Corvette worked on. Whoever spec'd that first cam just didn't know much about upgrading an LS engine. Then in post #8 you are waiting for the shop to "get the proper software" to tune your car. You definitely don't want them learning how to tune on your car. It takes a lot of knowledge and time to learn how to properly tune a car. Being a cam only car, you could easily send your ECM to one of the forum tuners for their "mail order" tune if you can't find a compentent person in your area.
#16
Melting Slicks
Wow - I would probably find a different "shop" to get your Corvette worked on. Whoever spec'd that first cam just didn't know much about upgrading an LS engine. Then in post #8 you are waiting for the shop to "get the proper software" to tune your car. You definitely don't want them learning how to tune on your car. It takes a lot of knowledge and time to learn how to properly tune a car. Being a cam only car, you could easily send your ECM to one of the forum tuners for their "mail order" tune if you can't find a compentent person in your area.
#17
Race Director
Any updates?