modified LS2 intake install
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Intermediate
Joined: May 2006
Posts: 33
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modified LS2 intake install
I'm a new member, but have followed the forum for some time. Last saturday went to CHarris85Vett's home in Bremerton to swap my stock LS2 intake for one of his ported units. He had a couple in stock, and each looked fine. Cory did most of the work, and I mainly got in the way. The work went well, and we had a lot of fun talking vettes and hotrods.
Isn't it funny in hotrodding when relatively small things make a difference? I've owned my 05 Z51 6 speed coupe for a year and a half. One of the first things I noticed with this car was a tendency to run rough and level off at WOT above about 5500 rpm (in stock trim). At first I thought that there was an engine/flywheel ballance problem, or possibly a tuning issue. However, I drove a friends 05' and it was the same as mine. Subsequently my car was modified (LG pros, high flow cats and x pipe, a 120/124 114 LSA comp cam from A&A, cleaned up stock heads w/ LS 6 valves, nice valve job, minor bowl work, milled 0.010, comp dual springs & ti retainers, Halltech ECM tune and CIA). Well the mod's took care of the falling off at higher RPM's, but some roughness up top remained. I don't know if any of the forum members have noticed this tendency. In my 40 some years experience with well built small block chevs, I've always had smooth pulling engines.
Cory's manifold seems to have cured most of the rough running at WOT up top. Hard to feel 7 to 15 hp (improvement?) at this horsepower level, but the motor seems to pull well. Will dyno in the comming weeks. Baseline dyno prior to mod intake was 398 RWHP and 375 TQ. Thanks Cory your a good man and a friend.
Isn't it funny in hotrodding when relatively small things make a difference? I've owned my 05 Z51 6 speed coupe for a year and a half. One of the first things I noticed with this car was a tendency to run rough and level off at WOT above about 5500 rpm (in stock trim). At first I thought that there was an engine/flywheel ballance problem, or possibly a tuning issue. However, I drove a friends 05' and it was the same as mine. Subsequently my car was modified (LG pros, high flow cats and x pipe, a 120/124 114 LSA comp cam from A&A, cleaned up stock heads w/ LS 6 valves, nice valve job, minor bowl work, milled 0.010, comp dual springs & ti retainers, Halltech ECM tune and CIA). Well the mod's took care of the falling off at higher RPM's, but some roughness up top remained. I don't know if any of the forum members have noticed this tendency. In my 40 some years experience with well built small block chevs, I've always had smooth pulling engines.
Cory's manifold seems to have cured most of the rough running at WOT up top. Hard to feel 7 to 15 hp (improvement?) at this horsepower level, but the motor seems to pull well. Will dyno in the comming weeks. Baseline dyno prior to mod intake was 398 RWHP and 375 TQ. Thanks Cory your a good man and a friend.
Le Mans Master
Joined: Feb 2006
Posts: 5,762
Likes: 4
From: Chandler Arizona
Originally Posted by healykid
Subsequently my car was modified (LG pros, high flow cats and x pipe, a 120/124 114 LSA comp cam from A&A,
I haven't noticed the rough running up on top and stock my car pulled very strong to redline. I'm guessing maybe my stock manifold isn't as rough as yours was. I'd still like to get a ported manifold.
Thanks,
Glenn
Melting Slicks
Joined: Mar 2006
Posts: 2,064
Likes: 4
Originally Posted by healykid
I'm a new member, but have followed the forum for some time. Last saturday went to CHarris85Vett's home in Bremerton to swap my stock LS2 intake for one of his ported units. He had a couple in stock, and each looked fine. Cory did most of the work, and I mainly got in the way. The work went well, and we had a lot of fun talking vettes and hotrods.
Isn't it funny in hotrodding when relatively small things make a difference? I've owned my 05 Z51 6 speed coupe for a year and a half. One of the first things I noticed with this car was a tendency to run rough and level off at WOT above about 5500 rpm (in stock trim). At first I thought that there was an engine/flywheel ballance problem, or possibly a tuning issue. However, I drove a friends 05' and it was the same as mine. Subsequently my car was modified (LG pros, high flow cats and x pipe, a 120/124 114 LSA comp cam from A&A, cleaned up stock heads w/ LS 6 valves, nice valve job, minor bowl work, milled 0.010, comp dual springs & ti retainers, Halltech ECM tune and CIA). Well the mod's took care of the falling off at higher RPM's, but some roughness up top remained. I don't know if any of the forum members have noticed this tendency. In my 40 some years experience with well built small block chevs, I've always had smooth pulling engines.
Cory's manifold seems to have cured most of the rough running at WOT up top. Hard to feel 7 to 15 hp (improvement?) at this horsepower level, but the motor seems to pull well. Will dyno in the comming weeks. Baseline dyno prior to mod intake was 398 RWHP and 375 TQ. Thanks Cory your a good man and a friend.
Isn't it funny in hotrodding when relatively small things make a difference? I've owned my 05 Z51 6 speed coupe for a year and a half. One of the first things I noticed with this car was a tendency to run rough and level off at WOT above about 5500 rpm (in stock trim). At first I thought that there was an engine/flywheel ballance problem, or possibly a tuning issue. However, I drove a friends 05' and it was the same as mine. Subsequently my car was modified (LG pros, high flow cats and x pipe, a 120/124 114 LSA comp cam from A&A, cleaned up stock heads w/ LS 6 valves, nice valve job, minor bowl work, milled 0.010, comp dual springs & ti retainers, Halltech ECM tune and CIA). Well the mod's took care of the falling off at higher RPM's, but some roughness up top remained. I don't know if any of the forum members have noticed this tendency. In my 40 some years experience with well built small block chevs, I've always had smooth pulling engines.
Cory's manifold seems to have cured most of the rough running at WOT up top. Hard to feel 7 to 15 hp (improvement?) at this horsepower level, but the motor seems to pull well. Will dyno in the comming weeks. Baseline dyno prior to mod intake was 398 RWHP and 375 TQ. Thanks Cory your a good man and a friend.
However, all I have done is a tune and a Calloway CAI on my Z51 and got 365 rwhp after dyno and tune. Long tubes and fast cats are going on this weekend. No heads, cam or otherwise. So, the big Q is, does it work ??
Melting Slicks
Joined: Nov 2002
Posts: 3,398
Likes: 2
From: Allentown PA
Originally Posted by LOS ANGELES PI
So, the big Q is, does it work ??
+7.5 peak with 7-14 HP/TQ throught the power band.
Melting Slicks
Joined: Nov 2002
Posts: 3,398
Likes: 2
From: Allentown PA
Originally Posted by LOS ANGELES PI
you were able to r&r the intake in 15 minutes?
Drifting
Joined: Jul 2000
Posts: 1,861
Likes: 1
From: Bremerton WA
St. Jude Donor '09
Originally Posted by healykid
I'm a new member, but have followed the forum for some time. Last saturday went to CHarris85Vett's home in Bremerton to swap my stock LS2 intake for one of his ported units. He had a couple in stock, and each looked fine. Cory did most of the work, and I mainly got in the way. The work went well, and we had a lot of fun talking vettes and hotrods.
Isn't it funny in hotrodding when relatively small things make a difference? I've owned my 05 Z51 6 speed coupe for a year and a half. One of the first things I noticed with this car was a tendency to run rough and level off at WOT above about 5500 rpm (in stock trim). At first I thought that there was an engine/flywheel ballance problem, or possibly a tuning issue. However, I drove a friends 05' and it was the same as mine. Subsequently my car was modified (LG pros, high flow cats and x pipe, a 120/124 114 LSA comp cam from A&A, cleaned up stock heads w/ LS 6 valves, nice valve job, minor bowl work, milled 0.010, comp dual springs & ti retainers, Halltech ECM tune and CIA). Well the mod's took care of the falling off at higher RPM's, but some roughness up top remained. I don't know if any of the forum members have noticed this tendency. In my 40 some years experience with well built small block chevs, I've always had smooth pulling engines.
Cory's manifold seems to have cured most of the rough running at WOT up top. Hard to feel 7 to 15 hp (improvement?) at this horsepower level, but the motor seems to pull well. Will dyno in the comming weeks. Baseline dyno prior to mod intake was 398 RWHP and 375 TQ. Thanks Cory your a good man and a friend.
Isn't it funny in hotrodding when relatively small things make a difference? I've owned my 05 Z51 6 speed coupe for a year and a half. One of the first things I noticed with this car was a tendency to run rough and level off at WOT above about 5500 rpm (in stock trim). At first I thought that there was an engine/flywheel ballance problem, or possibly a tuning issue. However, I drove a friends 05' and it was the same as mine. Subsequently my car was modified (LG pros, high flow cats and x pipe, a 120/124 114 LSA comp cam from A&A, cleaned up stock heads w/ LS 6 valves, nice valve job, minor bowl work, milled 0.010, comp dual springs & ti retainers, Halltech ECM tune and CIA). Well the mod's took care of the falling off at higher RPM's, but some roughness up top remained. I don't know if any of the forum members have noticed this tendency. In my 40 some years experience with well built small block chevs, I've always had smooth pulling engines.
Cory's manifold seems to have cured most of the rough running at WOT up top. Hard to feel 7 to 15 hp (improvement?) at this horsepower level, but the motor seems to pull well. Will dyno in the comming weeks. Baseline dyno prior to mod intake was 398 RWHP and 375 TQ. Thanks Cory your a good man and a friend.
I've very pleased that you are happy already. I'm a huge supporter of big power but only so long as it is driveable/enjoyable. We talked about a lot of stuff and I really look forward to seeing the results of your next step.
Keep in touch, Walt!
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