How many of you are running modded motors wit HIGH Miles?

[Lynx331]

Hey guys.. im just curious how many of you are running mods on your 5.0
s with alot of miles. Mine has 140,000 on it, it doesnt burn oil. Only uses alittle bit. I have a HCI on the car now, but im considering upgrading to a bigger head and a bigger intake for some more power. My question to u guys is.. should i just pull it out and re ring/bearing it? Or do u think it will be ok for a while?

 

[Strype]

I had a stock motor rebuilt at 120,000 miles and it was in baaaaad shape

I'd do a rebuild or risk your motor being torn down anyway.

 

[aod92]

My 92 has 135k on the short block. I have h,c,i and a bunch of other bolt ons. The car went 12.36 @ 108 mph

 

[fidstang]

Mine has 70,000 and I plan on either supercharging or turbo charging before I rebuild the bottom end. It's all in how you and the people before you(if any) took care of the car.

 

[vikingpower]

I've got 93K on mine and I run the snot out of mine all the time, revs like the dickens with my HCI but I'm going to upgrade to a Victor 5.0 manifold for even more top-end. I say go for it!

 

[RYC CUKR]

I have about 160k on mine. Just a guess cause the odometer is broken and stuck at 136k. Uses a little bit of oil maybe a quart every oil change but other than that no probs.

I compression checked it and leak down tested it and it came out really good, better than I thought that it would. Gettin ready to start running a 100 shot on it and we'll see how it handles that.

If it has good compression, good oil pressure, doesn't use excessive amounts of oil then I would leave it be and mod it as you wish.

 

[96SVTpilot]

If you are doing the H/I there's no better time to go for the rebuilt. If not you should be good as long as she's tight and holding good compression. These engines are famous for being able to take a beating. I just pulled my stock heads off after 99k. The cylinder walls and valvetrain looked great. The only reason I just changed my rear main seal is because I was doing the clutch. It wasn't even leaking enough to form drops, just a little damp.

 

[billyfresh40]

depends on ur motor....i know of some with 200k+ and goin strong, no smoke... i call these factory freaks....

yesterday i through a rod or something through the side of the oil pan with about 60k..... havent torn it apart and prolly wont, throw it in the scrap pile and use another short block layin around

either way it depends on how u and the previous owner drove the motor, just dont run a stock bottom end past 5800 or so, take it from me......

 

[poneypower89]

123k + and supercharged.... I dont really care though because Im currently putting together a new Mexican 331... Its all in the maintenance of your engine.. if its been taken good care of it will take care of you. I, myself, like to beat on my car like a red-headed step child.. hence, the need for a new engine

 

[WLDHRSE]

My 93 GT has all the normal bolt-ons, everything but heads. It only has 86k miles so I don't even consider it high milage.

My 91 GT has 175k and is bone stock. Engine is tight and strong. I wouldn't think twice about dropping a H/C/I and/or power adder on it, if I was keeping it.

Cliff

 

[865.0HO]

My GT has over 202k miles and still running strong, uses a quart every 1k miles (rear main).

I'm actually toying with the idea of NOS on my LX. Curious to see how long it would last.

 

[3 eyed snake]

i have a '90 gt with a vortec smokes 4 packs a day and still loves to eat little camaros... lol 200+ miles

 

[mustangramair]

Mine has 145K on it with the mods in my signature.