Cam install finished
Cam install finished Well it's finally over and done with after an all nighter. I wanted to think this site and users for all the information shared. I really done alot of research and the TA runs better than I expected.
I went with a custom grind cam from comp, 1.6 crane 11746-16 rockers, crane 10308-1 valve springs, comp R lifters, 7608 push rods, gmpp guide plates, LT pacesetter headers, ory-pipe, 30lb injectors, and Trifecta tune.
Everything went really smooth. We pulled the motor out the bottom in about five hours, tore the motor down, put it back together the next day, and then spent all night getting it done. I did get a timing chain set for a 95 and up, so I had to wait on another one. If anyone wants to buy a cloyes 95 up timing gear and chain pm me. The headers caused a small fire on a dust cover, and they also baked off the heat paint but other than that everything went better than expected.
The crane 1.6 rockers work great and you don't have to trim the valve covers.
The car does seem very, very loud now. I hope that doesn't cause problems.
I do have one question for you guys running a cam close to the cc503.
Where did you guys set your idle? I have mine at 1000 rpm and it seems a bit high. It seems it idles too fast to give a good lope but I wondered if it were lower how it would act. Any thoughts?
I attached a few pics.
I went with a custom grind cam from comp, 1.6 crane 11746-16 rockers, crane 10308-1 valve springs, comp R lifters, 7608 push rods, gmpp guide plates, LT pacesetter headers, ory-pipe, 30lb injectors, and Trifecta tune.
Everything went really smooth. We pulled the motor out the bottom in about five hours, tore the motor down, put it back together the next day, and then spent all night getting it done. I did get a timing chain set for a 95 and up, so I had to wait on another one. If anyone wants to buy a cloyes 95 up timing gear and chain pm me. The headers caused a small fire on a dust cover, and they also baked off the heat paint but other than that everything went better than expected.
The crane 1.6 rockers work great and you don't have to trim the valve covers.
The car does seem very, very loud now. I hope that doesn't cause problems.
I do have one question for you guys running a cam close to the cc503.
Where did you guys set your idle? I have mine at 1000 rpm and it seems a bit high. It seems it idles too fast to give a good lope but I wondered if it were lower how it would act. Any thoughts?
I attached a few pics.
Launching!
Joined: Nov 2008
Posts: 292
Likes: 1
From: Arkansas
+1 check the iac and tps same thing happened to me after my swap. Adjusted the tps and worked itself out. Mine sits around 650-700 at idle.
Cool! Now all you need to do is hit the track. Are you running an auto or a 6spd? If auto, definantly need gears to go with the cam if you haven't done them already. I just did a swap with the LT4 kit and with the 2.73 rear it still feels slow, lol.
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I have a very similar build to you:
CC503
Crane 10308 springs
Comp 1.6 Pro Mags
TF guideplates
TF chromemoly pr's
PS LT headers & ORY
PP 52mm TB
Cobra 39# injectors
MadTuner tune.
My idle is set to 750, lope is nice. Call up Trifecta and see what your tune is set to. If it is not 1000, check your IAC and check for vacuum leak(s).
CC503
Crane 10308 springs
Comp 1.6 Pro Mags
TF guideplates
TF chromemoly pr's
PS LT headers & ORY
PP 52mm TB
Cobra 39# injectors
MadTuner tune.
My idle is set to 750, lope is nice. Call up Trifecta and see what your tune is set to. If it is not 1000, check your IAC and check for vacuum leak(s).
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Verdad Gallardo I set the idle to 1000 from Trifecta. I thought I read where that was a good idle set. I wasn't sure if I could change it afterwords. Can I def. change the idle with the tps & iac?
I am running a custom grind with the specs very close to the cc503. The cam card reads intake .502 Exhaust .510, Duration 275, 281, @.050 224, 230 and the LS is 114.
I installed a .373 gear several years back so I'm good there and it's a six speed car. I had a friend drive it that drag races alot, he said it would run low eights in the eight mile if It hook'd. I really don't care it's more of a street car, I have never took it to the strip. Who knows I may some day.
I am running a custom grind with the specs very close to the cc503. The cam card reads intake .502 Exhaust .510, Duration 275, 281, @.050 224, 230 and the LS is 114.
I installed a .373 gear several years back so I'm good there and it's a six speed car. I had a friend drive it that drag races alot, he said it would run low eights in the eight mile if It hook'd. I really don't care it's more of a street car, I have never took it to the strip. Who knows I may some day.
I set the idle to 1000 from Trifecta. I thought I read where that was a good idle set. I wasn't sure if I could change it afterwords. Can I def. change the idle with the tps & iac?
I am running a custom grind with the specs very close to the cc503. The cam card reads intake .502 Exhaust .510, Duration 275, 281, @.050 224, 230 and the LS is 114.
I installed a .373 gear several years back so I'm good there and it's a six speed car. I had a friend drive it that drag races alot, he said it would run low eights in the eight mile if It hook'd. I really don't care it's more of a street car, I have never took it to the strip. Who knows I may some day.
I am running a custom grind with the specs very close to the cc503. The cam card reads intake .502 Exhaust .510, Duration 275, 281, @.050 224, 230 and the LS is 114.
I installed a .373 gear several years back so I'm good there and it's a six speed car. I had a friend drive it that drag races alot, he said it would run low eights in the eight mile if It hook'd. I really don't care it's more of a street car, I have never took it to the strip. Who knows I may some day.
Specs sound just like a CC503 with a wider LSA. What lobes were used? The CC503 uses Comp's XE lobes.
Thanks, that is what I suspected, it's not worth another tune, I can live with it. I'll look back at the cam card later, I'm at work now.
TECH Regular
Joined: Apr 2007
Posts: 420
Likes: 0
From: Kempner, TX
Could be that your throttle body butterflies are just open a little too far and not allowing the engine to idle down. I had to tweak mine on two of my L98 engines and on my 388 LT1 when I installed a 58mm BBK throttle body.
There's a minimum airflow adjustment screw on the driver's side of the throttle body which can be turned counter-clockwise to slightly close the butterflies, lowering the idle speed. This could allow the IAC to take over control of the idle speed and maintain whatever RPM was programmed in the PCM.
If the butterflies are open too wide, the IAC can zero out (fully close its pintel) and the rpms still won't drop to the programmed idle speed.
Using that little screw will also effect the TPS voltage reading, so the TPS voltage should be checked after making the adjustment. Golen Engines website shows their procedure for checking and adjusting the TPS voltage.
Of course, I'm assuming you don't have any other problem like a vacuum leak and that your IAC and TPS are working properly.
Hope this help.
West Point ROCKS!
There's a minimum airflow adjustment screw on the driver's side of the throttle body which can be turned counter-clockwise to slightly close the butterflies, lowering the idle speed. This could allow the IAC to take over control of the idle speed and maintain whatever RPM was programmed in the PCM.
If the butterflies are open too wide, the IAC can zero out (fully close its pintel) and the rpms still won't drop to the programmed idle speed.
Using that little screw will also effect the TPS voltage reading, so the TPS voltage should be checked after making the adjustment. Golen Engines website shows their procedure for checking and adjusting the TPS voltage.
Of course, I'm assuming you don't have any other problem like a vacuum leak and that your IAC and TPS are working properly.
Hope this help.
West Point ROCKS!
Could be that your throttle body butterflies are just open a little too far and not allowing the engine to idle down. I had to tweak mine on two of my L98 engines and on my 388 LT1 when I installed a 58mm BBK throttle body.
There's a minimum airflow adjustment screw on the driver's side of the throttle body which can be turned counter-clockwise to slightly close the butterflies, lowering the idle speed. This could allow the IAC to take over control of the idle speed and maintain whatever RPM was programmed in the PCM.
If the butterflies are open too wide, the IAC can zero out (fully close its pintel) and the rpms still won't drop to the programmed idle speed.
Using that little screw will also effect the TPS voltage reading, so the TPS voltage should be checked after making the adjustment. Golen Engines website shows their procedure for checking and adjusting the TPS voltage.
Of course, I'm assuming you don't have any other problem like a vacuum leak and that your IAC and TPS are working properly.
Hope this help.
West Point ROCKS!
There's a minimum airflow adjustment screw on the driver's side of the throttle body which can be turned counter-clockwise to slightly close the butterflies, lowering the idle speed. This could allow the IAC to take over control of the idle speed and maintain whatever RPM was programmed in the PCM.
If the butterflies are open too wide, the IAC can zero out (fully close its pintel) and the rpms still won't drop to the programmed idle speed.
Using that little screw will also effect the TPS voltage reading, so the TPS voltage should be checked after making the adjustment. Golen Engines website shows their procedure for checking and adjusting the TPS voltage.
Of course, I'm assuming you don't have any other problem like a vacuum leak and that your IAC and TPS are working properly.
Hope this help.
West Point ROCKS!
I don't have any vacuum leaks that I know of, We checked several times. I couldn't find anything on the card about XE lobes. It was ground a few years back. I wanted the 503 cam but a fella had this one fairly cheap so I bought it.
TECH Regular
Joined: Apr 2007
Posts: 420
Likes: 0
From: Kempner, TX
