onemean66stang

I race my mustang any chance i get. i usually run myy 66 with an automatic/ the other decide i decided to let my 89 5.0 verte stretch its legs. i know i revved the engine to high in first. my tach hit 7,000 rpm for split second in first gear. i have done this 2 times so far. what should i look at to make sure i am not hurtinf my motor? i normally don't run it up past 4500 rpm. how bad is it for my 5.0 to hit 7000rpm?

Dan89lx

i have hit 7000 with mine several times, i dont know why but the rev limiter works sometimes ( i think at 6250) and sometimes it doesnt. If you are that concerned get a MSD 6AL box and put in a 6000 pill (or whatever you want) and it wont rev any higher than that. Plus, MSD makes a nice diffrence in performance.

onemean66stang

how high can a stock 5.0 rev before i need to get worried?

Demon_Mustang

Well, technically they say 6000 is pretty dangerous, but I don't think a few occassional spikes will do anything. Not to mention, if anything went wrong because of it, you would probably know it right away, lol.

88_5.0

i only take mine to a maximum of 5000 thats just me tho, i don't want to float the valves

Dbeck002

I dont like to rev her past 5000 either.

91hatchgt

The stock 5.0 can take 5000 no problem, but you begin to lose power after that. One question: How do you accidently hit 7000 RPM! After a new cam, the engine is capable of much higher RPM's.. After 1.7's 5300-5500 is about max.

When you hit high RPM's like 6000+ you will see your water temp shoot up for a few seconds, but then begins to drop, like previously stated, if you hurt anything, you would know it right away. Don't freak.

stanglx2002

i dont take mine over 5500 but i have a E303 cam and 1.7 RR

roundman

6,200 rpm never hurt my '88 but I have too much gear to go over that in the 1/4 mile so I can't say about 7,000.