Engine Cuts at 120
Registered User
Joined: Mar 2004
Posts: 567
From: Mission, TX
Re: Engine Cuts at 120
Originally Posted by StylezZ28
umm w/o a speed limiter i would thing an M6 would go much faster then 159... i got to 155 and still had some more of 5th and 6th to go..
I imagine I can still have pull on the top end in 6th, since I have 4.11's
I am making a road trip to Rio Grande Valley on the 20th, and my favorite top speed test-road is on the way. Theres room to top out and more....nothing but open stretch.
I'll let you guys know. I wish I had a separate speedometer to know how fast Im going...but at least I can take along my little printout showing RPMvsMPH and know once I finish.
Hope fully I can get 6th to keep pulling. The chart says when I shift into 6th after topping out 5th....I'll be right around 4000-4100 rpms in 6th....that should be enough to keep pulling...hopefully the front doesnt try to lift. If it does Im just going to have to abort the mission. (Houston, we have a problem!)
I have been wondering what all I can do to make the car more stable at high speeds(150+)
I am good at working with aluminum...I wonder if making a belly pan for it would help at all.....
Registered User
Joined: Aug 2001
Posts: 420
From: Poway CA, where GOD and the sun always shines
Re: Engine Cuts at 120
Originally Posted by PAGregSS
Z28s are speed limited at 120 due to the 16 inch tires that are not Z speed rated.
If your vehicle came with NON Z rated tires your speed limiter was set to 117 MPH. The vehicle can not be produced from the factory with speeds exceeding the tires rating.
SteveC
Last edited by SteveC; Aug 9, 2004 at 01:52 PM.
Re: Engine Cuts at 120
Registered User
Joined: Jul 2003
Posts: 1,416
From: Davie FL
Re: Engine Cuts at 120
Originally Posted by stone4779
yeah even with my 4.11's I still barely peg the speedo in 5th.(5th gear runs out right at 155) I havnt tried to see what 6th feels like on the top end with my gears...I need to get better tires first...
I imagine I can still have pull on the top end in 6th, since I have 4.11's
I am making a road trip to Rio Grande Valley on the 20th, and my favorite top speed test-road is on the way. Theres room to top out and more....nothing but open stretch.
I'll let you guys know. I wish I had a separate speedometer to know how fast Im going...but at least I can take along my little printout showing RPMvsMPH and know once I finish.
Hope fully I can get 6th to keep pulling. The chart says when I shift into 6th after topping out 5th....I'll be right around 4000-4100 rpms in 6th....that should be enough to keep pulling...hopefully the front doesnt try to lift. If it does Im just going to have to abort the mission. (Houston, we have a problem!)
I have been wondering what all I can do to make the car more stable at high speeds(150+)
I am good at working with aluminum...I wonder if making a belly pan for it would help at all.....
I imagine I can still have pull on the top end in 6th, since I have 4.11's
I am making a road trip to Rio Grande Valley on the 20th, and my favorite top speed test-road is on the way. Theres room to top out and more....nothing but open stretch.
I'll let you guys know. I wish I had a separate speedometer to know how fast Im going...but at least I can take along my little printout showing RPMvsMPH and know once I finish.
Hope fully I can get 6th to keep pulling. The chart says when I shift into 6th after topping out 5th....I'll be right around 4000-4100 rpms in 6th....that should be enough to keep pulling...hopefully the front doesnt try to lift. If it does Im just going to have to abort the mission. (Houston, we have a problem!)
I have been wondering what all I can do to make the car more stable at high speeds(150+)
I am good at working with aluminum...I wonder if making a belly pan for it would help at all.....
Registered User
Joined: Apr 2004
Posts: 1,347
From: Austin/Houston, TX
Re: Engine Cuts at 120
thats funny.... my car can hit 180+... not that i would know or anything
its kinda hard to calculate how fast you are going when the needle is pegged for 10 seconds and still pulling.
its kinda hard to calculate how fast you are going when the needle is pegged for 10 seconds and still pulling.
Registered User
Joined: Jul 2003
Posts: 1,416
From: Davie FL
Re: Engine Cuts at 120
Originally Posted by disco192
thats funny.... my car can hit 180+... not that i would know or anything
its kinda hard to calculate how fast you are going when the needle is pegged for 10 seconds and still pulling.
its kinda hard to calculate how fast you are going when the needle is pegged for 10 seconds and still pulling.
Registered User
Joined: Sep 2002
Posts: 519
From: Columbus, OH
Re: Engine Cuts at 120
http://home.columbus.rr.com/trackbir...no%20small.jpg
That is my 2002 Z-28 doing a 3-4-5 gear pull on a dynojet. It shut off at 158.1 (the computer said 162 when I had the limiter removed), so it appears to be a slight speedometer error and a 162 mph limiter. I had the Eagle RSA's (really slide around or really suck a$$, not sure which) on mine as well (245/50-16).
Have fun and be safe!
That is my 2002 Z-28 doing a 3-4-5 gear pull on a dynojet. It shut off at 158.1 (the computer said 162 when I had the limiter removed), so it appears to be a slight speedometer error and a 162 mph limiter. I had the Eagle RSA's (really slide around or really suck a$$, not sure which) on mine as well (245/50-16).
Have fun and be safe!