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Yes, 1500 is crack smoking high for that many miles. Would you mind sending me that link? Ive never used that site but the ol 6 nickel will make an 8 hr round trip cross state for that.

JY found a vortec 454 today! 280k miles and they only want $1500 plus core!

Lq4 is a little short on torque for a truck that will spend its life in front of a trailer. I do however have a psi harness for a 2008-2009 6.0/4l80 in hand.... 8.1, I know where there is one being parted out but then again bolt in and go is preferred. I found an engine I'd like to use the...

My mechanic said 3k tops to rebuild the bottom end and put a cam in. I didn't pay for the first rebuild. I will at the very least keep in until I can pay cash for a brand new loaded Duramax and trade yearly on cash out of pocket. I currently can't make my $700/month truck payment with the...

Non transferable warranty and its only a 12 month warranty and its been 16 months. No online reputation. I would be covering parts, po would cover labor or send money to a local shop of my choice. I would have to pay to have it hauled 4hrs. Not happening, I will trust the White night to haul...

I was hesitant to call but when I did he said he would try to work out a way to get it in the shop that did the work originally. I'm not a fan of having a possibly bad experience with similar results after towing it 4hrs back to where I got it. I'm trying to find a used crank and my mechanic...

Side thread time. https://www.thetruckstop.us/forum/threads/vortec-454-rebuild-options.47821/

https://www.thetruckstop.us/forum/threads/1997-k3500-454-work-horse.47765/

So as my other thread stated, I spun a bearing in my 97 454 vortec motor with low miles on a rebuild. The crank has already been turned once, I assume I just need to replace it. Is there anything spcial about the vortec 454? I found a 95 tbi 454 with 78k miles forsale, would that bottom end...

It's not a Jasper. The shop said they will rebuild it again but I'd have to cover parts. The PO offered $1000 toward the shop of my choosing.

If that was an issue I'd think there would have been more issues than just an erratic idle and vibration at idle. With a little throttle it always cleared right up.

It's only a little over a yr old reman and mayne 7k miles tops. The receipt only says reman engine written on it. I got the shop number from the PO and told him the situation, I am trying to see if he will help me with the shop and at least get me a break on repairs (don't really want to take it...

Well its knocking...

I did a few break stands before I got the sensors replaced, that test was inconclusive. After that I tried it and it would push through the breaks at 1600 then light the tires. Today I tried it while grossing 25k.... 1800-2k so stock low stall.

Also been a thought. It sounds great from 2500-4k. The throttle body roars as she pulls air.

No codes. Its all electric on the 4l80 and it shifts nice. I assume stock cam, it was driven by an older man (60-70ish) as his work truck building houses and is a one owner truck. The cam could be wrong but how could you get one this weak? Lol the stall would also be interesting to know too.

If I end up pulling spark plugs I'll check compression. What numbers should I see? Seems to pull alot of vacuum. Used maybe 1/4 qt in 3k miles.

Its a 97 vortec 454 w/ 4l80. Cleaned throttle, cleaned maf w/ maf cleaner, new iac, new ect sensor, new downstream O2 sensor. All stock as far as I know. Rebuilt engine and reman trans both with 5k on them. To hold 55mph loaded it down shifts to 2nd alot. Starts fairly hard cold, almost wont...

You guys wouldn't try to fix the hard starts and surging/rough idle first? I hate to condem the engine before I've checked everything else.