LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Some CC503 questions

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Old 07-29-2009, 03:04 PM
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Originally Posted by ss.slp.ls1
You can also use ARP 7/16" rocker arm studs. That's what I am using with my 7/16" NSA Pro Mags.

Don't get a high pressure pump. Just get a GM replacement standard volume/standard pressure oil pump and install the GM white spring.

I wouldn't recommend replacing rod bolts without reconditioning the rods and installing new bearings.

I spin my stock bottom end to ~6300-6500 rpm regularly without issue (your results may vary, lol). Which is fine to get the most out of the CC503.
My gauge is already reading at the middle at idle when cold, at the 1st quarter when the engine is hot, and when driving right at the middle, a bit over if I have my foot down. Could be the oil the garage put in when I gave it in for an oil change (I had to because I didn't even have time to wash my car, otherwise I do all the work myself). I got some 10w30 Ford Sythetic blend oil and will try it out before I go for changing the pump.

Why not go for a high pressure? Care to share a technical explanation?

Some say its safe, and the car's manual says its good if your not in the red.

This is of course, considering the gauge is reading correctly, or the sending unit is not gone haywire.
Old 07-29-2009, 03:56 PM
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Originally Posted by ADM
My gauge is already reading at the middle at idle when cold, at the 1st quarter when the engine is hot, and when driving right at the middle, a bit over if I have my foot down. Could be the oil the garage put in when I gave it in for an oil change (I had to because I didn't even have time to wash my car, otherwise I do all the work myself). I got some 10w30 Ford Sythetic blend oil and will try it out before I go for changing the pump.

Why not go for a high pressure? Care to share a technical explanation?

Some say its safe, and the car's manual says its good if your not in the red.

This is of course, considering the gauge is reading correctly, or the sending unit is not gone haywire.
I meant no on a high volume pump. Then you run the risk of pumping the pan dry, so I've heard. If you have a std volume/high pressure pump, I think you'll be fine. FYI, I have 60psi of oil pressure upon start up, 30psi hot idle and over 60psi WOT. Stock bottom end. Bearing clearances also dictate oil pressure. The newer engine has much stronger oil pressure than my old one. I used to have ~20psi hot idle, which is much higher than the GM spec of 7psi min hot idle.
Old 07-29-2009, 04:23 PM
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Originally Posted by ss.slp.ls1
I meant no on a high volume pump. Then you run the risk of pumping the pan dry, so I've heard. If you have a std volume/high pressure pump, I think you'll be fine. FYI, I have 60psi of oil pressure upon start up, 30psi hot idle and over 60psi WOT. Stock bottom end. Bearing clearances also dictate oil pressure. The newer engine has much stronger oil pressure than my old one. I used to have ~20psi hot idle, which is much higher than the GM spec of 7psi min hot idle.
I thought you might have gotten confused. I did say high pressure pump as in standard volume, sorry for not mentioning the standard volume part.

I thought I might as well swap it while the pan is out, whether the pressure sender and gauge are reading accurately or not. And its not expensive either.

I am reading a lot of bad things regarding knock over at the LT1LS1 forums due to full roller rockers, are they really that noise to cause false knock?
Old 07-29-2009, 04:33 PM
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Originally Posted by ADM
I thought you might have gotten confused. I did say high pressure pump as in standard volume, sorry for not mentioning the standard volume part.

I thought I might as well swap it while the pan is out, whether the pressure sender and gauge are reading accurately or not. And its not expensive either.

I am reading a lot of bad things regarding knock over at the LT1LS1 forums due to full roller rockers, are they really that noise to cause false knock?
If you don't adjust them right, they can be very noisy. Once you have them adjusted, I don't notice the noise at all, over the cam at least.
Old 07-29-2009, 04:40 PM
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Originally Posted by ss.slp.ls1
If you don't adjust them right, they can be very noisy. Once you have them adjusted, I don't notice the noise at all, over the cam at least.
I am getting an LT4 KM anyways, that should help a bit.

On stock lifters, how much pre-load did you set?

I will also try to adjust them with the engine idling, make sure I get as close to 0 as possible.
Old 07-29-2009, 04:40 PM
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Originally Posted by ss.slp.ls1
If you don't adjust them right, they can be very noisy. Once you have them adjusted, I don't notice the noise at all, over the cam at least.
I am getting an LT4 KM anyways, that should help a bit.

On stock lifters, how much pre-load did you set?

I will also try to adjust them with the engine idling, make sure I get as close to 0 as possible.
Old 07-29-2009, 04:41 PM
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Originally Posted by ADM
I am getting an LT4 KM anyways, that should help a bit.

On stock lifters, how much pre-load did you set?

I will also try to adjust them with the engine idling, make sure I get as close to 0 as possible.
I used 1/2 turn past zero lash. I adjusted them while running.
Old 07-29-2009, 04:50 PM
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Originally Posted by ss.slp.ls1
I used 1/2 turn past zero lash. I adjusted them while running.
Are you running stock heads? What did you put down at the dyno?
Old 07-29-2009, 04:53 PM
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Originally Posted by ADM
Are you running stock heads? What did you put down at the dyno?
Yes, stock heads. Mail order tune, no dyno numbers.
I did run it once at the 1/8 track since the cam swap. Shitty times on street tires, but I did trap 87.20 mph.
Old 07-29-2009, 05:23 PM
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Originally Posted by ss.slp.ls1
Yes, stock heads. Mail order tune, no dyno numbers.
I did run it once at the 1/8 track since the cam swap. Shitty times on street tires, but I did trap 87.20 mph.
Who did your tune?

I am hoping to data log my PCM and send Solomon the file to sort it out for me. Just trying to finalize my parts list to see if I can spare for the cable yet, or not.
Old 07-29-2009, 05:52 PM
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Originally Posted by ADM
Who did your tune?

I am hoping to data log my PCM and send Solomon the file to sort it out for me. Just trying to finalize my parts list to see if I can spare for the cable yet, or not.
MadTuner.
Old 07-30-2009, 10:53 AM
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I cannot send my PCM to the USA, would take forever to have it all done.
Old 07-30-2009, 11:21 AM
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Originally Posted by ADM
I cannot send my PCM to the USA, would take forever to have it all done.
He has a PCM exchange program. He'll send you out your tuned PCM now and you can send your stock one back after. I'm sure you can call/email him and upgrade your shipping so it arrives faster.
Old 07-30-2009, 11:40 AM
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Originally Posted by ss.slp.ls1
He has a PCM exchange program. He'll send you out your tuned PCM now and you can send your stock one back after. I'm sure you can call/email him and upgrade your shipping so it arrives faster.
I won't have a problem with the delay, I have a DD to use, this is just my toy.

I doubt they would do the exchange program for overseas anyway.

I will give them a shout and see what they say.
Old 07-30-2009, 11:44 AM
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Originally Posted by ADM
I won't have a problem with the delay, I have a DD to use, this is just my toy.

I doubt they would do the exchange program for overseas anyway.

I will give them a shout and see what they say.
LOL he will, you pay a core fee to get a tuned PCM out to you, then you get money back when you send in your PCM. You'll have the tuned PCM in your car quicker.
Old 07-30-2009, 12:00 PM
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Originally Posted by ss.slp.ls1
LOL he will, you pay a core fee to get a tuned PCM out to you, then you get money back when you send in your PCM. You'll have the tuned PCM in your car quicker.
Shame they don't do a full performance e-mail tune service. I guess I will just mail him the PCM instead.

Unless I can send him a log to start with and send me the tweaked file to upload.
Old 07-30-2009, 02:01 PM
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I contacted Ion, and he has been very helpful. It can be done by e-mail, I just need to get me an ALDL cable.
Old 07-30-2009, 09:46 PM
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Will I need to swap anything else to assist the new high pressure pump?
Old 07-31-2009, 02:27 AM
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Originally Posted by ADM
Will I need to swap anything else to assist the new high pressure pump?
I don't think so.
Old 07-31-2009, 05:07 AM
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Originally Posted by ss.slp.ls1
I don't think so.
I only ask because Ion mentioned to me that some people replaced the idler gear or they faced some problems? Is this true?


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