19 ZR1 ez mods
Melting Slicks
Joined: Aug 2004
Posts: 2,339
Likes: 483
I went more extreme but people have done what you’re talking about on a Zr1. It’s very expensive because of the tune but will yield results. Meth will be a must unless you run 100 octane. You may get better results in the Zr1 section. The pulley swap is easy. The meth is time consuming. Big key is a good tuner with experience on that car. Don’t trust a shop that hasn’t tuned one.
Safety Car
Joined: May 2000
Posts: 4,827
Likes: 352
From: Albuquerque NM
MY OPINION, only my opinion, the best performance upgrade you can do is tires to put down the stock power you have. Unless you are running 60 mph roll races you will just spin more with more power on stock tires.
However, I believe, the stock ZR1 will benefit from high octane fuel so race gas or a GOOD octane booster will add noticeable power.
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
I went more extreme but people have done what you’re talking about on a Zr1. It’s very expensive because of the tune but will yield results. Meth will be a must unless you run 100 octane. You may get better results in the Zr1 section. The pulley swap is easy. The meth is time consuming. Big key is a good tuner with experience on that car. Don’t trust a shop that hasn’t tuned one.
Melting Slicks
Joined: Aug 2004
Posts: 2,339
Likes: 483
Meth is not a must at all if he's just pulleying the car and tuning it. Headers, pulley, intake and tune will be fine on 93 without meth. the next step would be a cam, low side, and a bigger port injectors. That gets you well into the 900 wheel range. Meth isn't needed on a ZR1 until you get in the 1000 wheel range.
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
800 rwhp is great power on 93. That's what the car will make. If the car is tuned the timing table will be modified from OEM to prevent timing being pulled in different spots. The OEM tune will pull timing if it sees a little rattle, but an aftermarket tune can prevent this some without turning down the knock sensors.
Last edited by C7&7; Oct 27, 2020 at 01:18 PM.
