2003 S-10

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Basement Paul
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Re: 2003 S-10

Postby Basement Paul » Sun Mar 14, 2021 6:27 pm

Wrapped headers and bellhousing back in place. Waiting on the motor now.

-BP
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Basement Paul
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Re: 2003 S-10

Postby Basement Paul » Wed Mar 31, 2021 11:57 am

The motor is done and I should be able to pick it up this week. They were running it on the dyno the last few days chasing an oil leak but they're convinced they've got it fixed. Numbers on the stand are 547hp from 6300 to over 6600rpms, and 500 lbft at 4600. This is the more significant number as it was making max torque before over 5800rpm and if I remember, it was around 460lb ft. This is really what the truck was missing was midrange torque. Everything was WAY up in the RPM range. I think if I can get traction, this will make it way stronger. Really though, until it's on the rollers with all my own equipment hooked up, I won't be able to compare what I had before. Hopefully I can get it back this week and start working on it.

I missed the opportunity to see it run on the stand because I had an appointment to get my first covid shot. I am literally home ALL the time, and the fact that these two things lined up was really frustrating.

-BP

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Maverick
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Re: 2003 S-10

Postby Maverick » Thu Apr 01, 2021 1:35 pm

Great project!! I'm eager to see the numbers at the track.
Maverick

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Basement Paul
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Re: 2003 S-10

Postby Basement Paul » Sun Apr 04, 2021 5:50 pm

This weekend I put in about 10 hours getting the engine back in place. Fred helped me on Saturday for about 6 hours muscling the motor and trans together. The rest of the time today was just putting the rest of the bellhousing bolts in, getting the torque converter bolted up, and installing the starter.

Next up will be getting the headers and spark plugs installed. That should be another 6 hours or so. It's amazing how each little thing takes forever on this. Just remind me the next time I want to put a big motor in a small vehicle, what a pain it is. Sometimes I forget... :mrgreen:

-BP
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Basement Paul
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Re: 2003 S-10

Postby Basement Paul » Sun Apr 11, 2021 9:35 pm

I spent some time most evenings this week, all day Saturday, and a few hours today, but the S10 is alive again! The only issues I had were a leaking tranny line at the radiator, and a plastic conduit around a plug wire that was touching the header that melted. Everything else was just a part of the process.
It sounds amazing and runs really smooth with the balanced assembly. I can hear the extra compression and the bigger cam too. It's hard to hear in a video though, which I'll post this week.
Tomorrow the hood and front end go back on, and if the weather is good, it will head to Hutter's for the final tune.

-BP

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Basement Paul
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Re: 2003 S-10

Postby Basement Paul » Mon Apr 12, 2021 11:02 am

Here's what it sounds like:

https://www.youtube.com/watch?v=rjH4AHmWvDQ

Definitely better with speakers than with a phone.

-BP

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Basement Paul
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Re: 2003 S-10

Postby Basement Paul » Tue Apr 13, 2021 6:49 am

Yesterday dad dropped by to help me put the hood on. I got the grill installed too, and topped off the transmission fluid. Trevor at Hutter's wanted the drag radials on it for the dyno runs because the street tires just don't grip enough, so I swapped my new set on too. I took it for a quick run around the block in the evening without serious incident. I have one spark plug wire that I need to adjust this morning before I drop it off for what's hopefully it's final tune.

Then I need to clean up my disaster of a garage. Tools and crap everywhere!

-BP

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Basement Paul
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Re: 2003 S-10

Postby Basement Paul » Tue Apr 20, 2021 9:09 pm

Less than a week later and the truck is back home and tuned. I got at text around 5pm yesterday from Trevor that he was going to finish the tuning and the truck was on the rollers right now... So I texted dad that this was happening, and I jumped in my truck to go watch.
The final wheel numbers were pretty much exactly where I thought they would be when it was done. 393HP at about 6250rpm and 351 ft lbs at 4650rpm. The last time I was on the dyno was right after I did the heads / headers / 3" exhaust to the muffler. Those numbers were 362HP at about 6800, and 314 ft lbs at about 5700rpm. So a 31HP increase overall and a 37 ft lb increase. The biggest deal is how much more torque across the RPM range and at a lot more useable RPM. Even though the shift point is now at 7000rpms (used to be 6850), the HP and torque come in sooner and then last longer than before.
I drove it home on slightly damp roads, so no real chance to play, but the drivability seems better than before, and the motor is definitely smoother and sounds a little more grumpy out the tailpipes. Hopefully when the snow melts, I can put some miles on it and get down the 1/4. After seeing it on the dyno, at least I'm not afraid to take it to the track right away.

I'll scan the two different dyno sheets for comparison.

-BP

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Fred32v
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Re: 2003 S-10

Postby Fred32v » Wed Apr 21, 2021 12:01 am

It was fun watching the S10 perform on the rollers.
The most fun was when the tranny was asked to shift into 4th under full power.
It didn't take that long, don't know what the speed was at that moment, but .....!!!!!!
Fred32v
GMC Canyon Crew Cab Short Box 4x4 V6!


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