LT1 over 7000

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Mar 5, 2008 | 01:25 PM

#16

Injuneer

Administrator

Joined: Nov 1998

Posts: 71,094

From: Hell was full so they sent me to NJ

Quote:

Originally Posted by My Red 93Z-28

Like Injuneer has said if you want to go over 7000 rpms, you need an aftermarket PCM and possibly some adjustments to the opti unless you go with a LTCC or other coil-pack igntion......

That's not what I said.....

Mar 5, 2008 | 01:30 PM

#17

Z28SORR

Registered User

Joined: Jul 2002

Posts: 3,768

From: Friendswood, TX, USA

Quote:

Originally Posted by Injuneer

That's not what I said.....

You've become so famous, or is that imfamous, that now your being miss quoted.

Mar 6, 2008 | 10:20 AM

#18

526 SS 96

Registered User

Joined: Dec 1998

Posts: 455

From: Cleveland, Ohio

Quote:

Originally Posted by Injuneer

You can turn the engine as high as the rotating assembly and valve train are designed for. Problem with the stock PCM is that the tables only go up to 7,000rpm. But you can turn more than 7,000rpm on the stock PCM... it just runs on the 7,000rpm values. Means the 7,000rpm table values/programming have to take into consideration that the engine will actually be turning more than that. It may also put a bit of a strain on the distributor rotor. For vey high RPM, something like the LTCC ignition, which uses only the optical sensor in the distributor might provide better results.

Or, go to an aftermarket ECU and the sky is the limit.

Good post.
Here is a short video of my car turning 7,500 RPM on the dyno. I shift at about 7,500, but I have turned it 8,000 on a missed shift.

Last edited by 526 SS 96; Mar 6, 2008 at 10:22 AM.