Go for it!?
#1
Go for it!?
Headers, bolt-ons , and maybe a cam for my bird. It's got 109,xxx on it. It has a little knock when I first start it and the temp is freezing cold. She still pulls strong and runs fine. Go for putting the parts on?
#2
Re: Go for it!?
Absolutely! The knock on startup is most likely the well known LT-1 piston slap issue; It's very common.
My car has 119K miles on it, and I have to issues reving it up to 6k with the mods in my sig (headers are going on next)
If you take care of it ... (change oil, replace air filter, etc...) and resolve issues as soon as they arise, it'll be fine with headers and bolt ons (as long as you don't consider NoS a bolt on )
Thomas.
My car has 119K miles on it, and I have to issues reving it up to 6k with the mods in my sig (headers are going on next)
If you take care of it ... (change oil, replace air filter, etc...) and resolve issues as soon as they arise, it'll be fine with headers and bolt ons (as long as you don't consider NoS a bolt on )
Thomas.
#3
Re: Go for it!?
Originally Posted by Stoopalini
Absolutely! The knock on startup is most likely the well known LT-1 piston slap issue; It's very common.
say do the headers and bolt ons, but i would hold off on the cam till you figure out why its knocking.
if its a slight tick, it might just be the injectors.
#4
Re: Go for it!?
Huh, I'm surprised you haven't heard of this with an LT-1.
Mine has always done it (even when it had 70k miles), my buddies '97 SS also does it, and my Brother's '97 Z did it too. It's a rapping sound above 2k rpm or so, from the motor when it's cold. I just keep the RPMs below 2k for the 1st 10 miles or so in the morning.
Thomas.
Mine has always done it (even when it had 70k miles), my buddies '97 SS also does it, and my Brother's '97 Z did it too. It's a rapping sound above 2k rpm or so, from the motor when it's cold. I just keep the RPMs below 2k for the 1st 10 miles or so in the morning.
Thomas.
#5
Re: Go for it!?
Originally Posted by Stoopalini
Huh, I'm surprised you haven't heard of this with an LT-1.
Mine has always done it (even when it had 70k miles), my buddies '97 SS also does it, and my Brother's '97 Z did it too. It's a rapping sound above 2k rpm or so, from the motor when it's cold. I just keep the RPMs below 2k for the 1st 10 miles or so in the morning.
Thomas.
Mine has always done it (even when it had 70k miles), my buddies '97 SS also does it, and my Brother's '97 Z did it too. It's a rapping sound above 2k rpm or so, from the motor when it's cold. I just keep the RPMs below 2k for the 1st 10 miles or so in the morning.
Thomas.
i know the stock throw out bearings will make a rattling noise.
#9
Re: Go for it!?
I don't think a cam at 109k miles will be a problem, as long as it's installed properly and the supporting hardware is replaced with quality stuff (lifters, pushrods, springs, etc ...) ... and as long as you don't plan on spinning a stock 109k miles bottom end to 7k RPMs
But, I haven't done a cam in a high mileage LT1 before, and there are reports of cam bearing failures after a cam swap on a high mileage LT1.
If you really want to make an informed decision, do a search for "cam bearing failure" and see what you find.....
Thomas.
But, I haven't done a cam in a high mileage LT1 before, and there are reports of cam bearing failures after a cam swap on a high mileage LT1.
If you really want to make an informed decision, do a search for "cam bearing failure" and see what you find.....
Thomas.
#14
Re: Go for it!?
my first 93 did it only in the winter when it was ice cold...it was a slight tap. I sprayed 150 shot on that engine at 130k miles..almost 2 bottle a week..and i prolly went through 30 bottles of 100 shot..never had an issue with the engine.