Engine RPM

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Mar 23, 2013 | 01:13 PM

Mohammed_z

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Drifting

Joined: Jan 2010

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From: Saudi Arabia

Engine RPM

I never tested how far the rpm needle goes , but

1) how do I know if my car was tuned to specific rpm ?

2) what's the stock red line for lt1 and lt4 ?

3) if it was tuned above stock , will lt4 cluster works without any problems ?

Mar 23, 2013 | 01:31 PM

383vett

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From: moraga ca

I guess the best way to check the tune if you don't know the previous owner is to put it on a dyno and see where the max torque and hp occur and to make sure the afr is optimized.

Mar 23, 2013 | 02:26 PM

Mohammed_z

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Drifting

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From: Saudi Arabia

Quote:

Originally Posted by 383vett

I guess the best way to check the tune if you don't know the previous owner is to put it on a dyno and see where the max torque and hp occur and to make sure the afr is optimized.

I mean , as I read now the stock lt1 redline is 5700 is that right ? How do I know if my car was tuned to reach something like 6000 or above.

Mar 23, 2013 | 04:37 PM

aboatguy

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From: Slidell Louisiana

As 383 vette said, read the tune... Tuner cat is an easy way to read a tune.
Or data log a couple of Wide Open throttle runs and see how high your RPM reaches

Datamaster will let you log 20 times for free.

I never drove in Saudi Arabia but I've driven in Bahrain, Kuwaite and Iraq; and I've heard that Saudi has even better and faster roads than Bahrain..... I used to love going 160+mph around the 5th? 6th? Ring Road between the SAS Radison and Camp Doha in rental Caprice LTZs or Lumina SSs. So I know you can find the place to hit your theoretical top speed

Mike

Mar 23, 2013 | 04:57 PM

Mohammed_z

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Drifting

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From: Saudi Arabia

Quote:

Originally Posted by aboatguy

ok , I like the idea of data log. If it was above stock lt1 redline , which I believe it is since the car has hot cam. Will lt4 instrument cluster work ?

Kuwait and UAE roads are the best , clean and wide.

.

Anyway i'm not planning to hit top speed

, dangerous !

Mar 23, 2013 | 05:00 PM

aboatguy

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From: Slidell Louisiana

It should according to this post:

Quote:

Originally Posted by WVZR-1

You mention "probably"! The important relevant information needs to be what it "actually is"! On the cluster is a label with an 8 digit part number that needs to reported "as plug & play or problems"! Here's the way I sorted it some time ago. A person needs to record what they used by part number and what was different or presented issues. Indicator lights etc.

1990 ZR-1 - 16133461 (260* engine oil)

1991 ZR-1 - 16142481 (280* engine oil)

The LCD's are assumed to be the same in these and they should exchange directly to '90 & '91 only cars.

1992 ZR-1 - 16158841

1993 ZR-1 - 16158841

The '92 - '93 base LT1 cars share the same "base cluster" so these numbers are considered directly interchangeable.

1994 ZR-1 - 16188031 ***

1995 ZR-1 - 16188031 ***

1996 LT4 - 16201621 ***

From this information it appears that '94 through '96 could use either of these for a direct exchange since the '95 & '96 base cars shared the same cluster.

***I'm not familiar with the warning lights on these

People have swapped LCD's year to year etc and mentioned no issues or issues that didn't concern them. I've paid little attention to that. Until a cluster tachometer is confirmed to be correct when compared to a scanner on the ALDL it should be assumed that it likely needs calibrated.

Last edited by aboatguy; Mar 23, 2013 at 05:02 PM.