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Re: 95 G30 Tow Project.
Don_F #736053 May 07th 2018 8:35 am
Joined: Sep 2013
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old hand
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While I haven't tried them out with a trailer yet, you could try swapping to the power mirrors from a conversion van. I'm not sure if the passenger side is convex or not, but I feel like I can see more area with the power mirror. And if nothing else, I can adjust it to where I want to see..

The stock mirrors you have are flat glass where most new cars have a convex passenger side mirror to see more area. While I haven't had experience with this personally, it looks like they sell a convex glass to go over your existing mirror glass. This may help your situation too.

https://www.amazon.com/1992-CHEVROLET-Convex-Passenger-Replacement/dp/B00NGOPAFW


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Re: 95 G30 Tow Project.
Don_F #739188 August 09th 2018 5:25 pm
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I took the plastic extensions off. They do very little.

[Linked Image]

I purchased a 2nd van today. 1974 G10. It was a good deal, I am not sure if It will stay or not. Paint is good but the mechanics need TLC. I came with a new set of 70s flares and air dam. Its a 3 speed on the column with no booster for the brakes. Not much fun to drive but I think with a little parts swapping it will be fine.


Last edited by Don_F; July 08th 2019 8:35 pm.
Re: 95 G30 Tow Project.
Don_F #739223 August 10th 2018 8:20 am
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Looks like a very clean starting point!


[Linked Image]
Re: 95 G30 Tow Project.
Don_F #739225 August 10th 2018 8:42 am
Joined: Feb 2002
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Looks great!


Jim & Lucy Newkirk
1965 Chevy Bad Influence
1981 Chevy-the Love Shack
2012 Chevy Van , 2020 chevy van
2020 Chevy van Sapphire Sweet.
Club Vannerz.
vanninvanner@comcast.net
Re: 95 G30 Tow Project.
Don_F #747989 May 04th 2019 12:21 am
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Its been a while since I updated this. Over the winter I removed the swirl port heads and flat tappet cam. I replaced them with Jegs crappy imported vortec heads and a baby 196 duration Chevy 14097395 cam. The idea was not a race car, but more grunt where I needed it for towing a 5000 lb trailer with a 5000lb van. The heads are a long story, but they will do. The cam I can't say enough good about for towing. It required a re-tune on the chip, but it tows a lot better. The left fuel table is the stock one the right is what the engine requires fuel wise with the new setup. The crappy low end on the left is now a big hump in volumetric efficiency, more air and fuel at low rpm, but I don't have to floor it all the time, so it works out gas mileage wise. All this is a few months old and the fuel table is more refined now.

[Linked Image]

After all that I couldn't have it dumping through the rusted exhaust so I bought a few stainless sections from summit and did a budget exhaust that should last a while.

[Linked Image]

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The before and after dyno sheets Dyno Dynamics does not calibrate their readings as high as the USA made Dynojet, the comparison HP is what is close to the DJ numbers. The columns are in different orders on each sheet, and I started the "after" pulls at a lot lower rpm to see if I lost anything down low. A 40hp gain on the top and a 50ft lb torque gain across the whole torque curve made a big difference. The engine still tops out at about the same RPM and that's fine. I don't run it above 4000 when towing anyway, mostly in the 1800 to 4000 range. I did some more work on the fuel curve since these runs were made, but have not put it back on the dyno. Its still breathing through cast iron manifolds and the factory TBI. It still idles, runs and sounds like stock, but in the way GM should have done it instead of how it came off the assembly line.

[Linked Image]

Re: 95 G30 Tow Project.
Don_F #747991 May 04th 2019 12:51 am
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NICE ! !


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: 95 G30 Tow Project.
Don_F #748021 May 05th 2019 8:34 am
Joined: Nov 2013
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pooh-bah
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Glad you came up with a combo that works for you Don. Congrats!

Would you mind sharing what the issues were withe the Jegs Vortec heads?

Re: 95 G30 Tow Project.
Don_F #748023 May 05th 2019 9:23 am
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The Jegs heads were originally advertised as having bronze guides and high lift springs. One I got had the high lift springs but no bronze guides. I was in a hurry so I painted it and stuck it on. The second one was the same casting but from a different manufacture. It was damaged. I asked Jegs to send me one that at least had the high lift springs like the first. They had just switched suppliers. No bronze guides as advertised, no high lift spring. A stock Vortec cam would be very close to coil bind. Very sloppy machine work. I asked if I could return, but they would only take the one that had not been installed. My fault, check both heads before painting or bolting anything on. I ended up removing the installed head and installing a new set of springs and retainers on both to get the proper lift clearance. With these heads the castings are pretty good, thick casting so there should be no worry about cracks like with GM heads, its just the machine work is super sloppy. The last version of the vortec heads from GM are a hit or miss too. Some say the castings are revised without notice and the exhaust ports are raised compared to the bolts. This causes standard exhaust manifolds to block off part of the port unless you grind out some of the roof. Jegs was worthless, they would not even remove the bronze guide description in their ad. After I harped on them for a month they finally took one apart and then suddenly the ad was changed.

Last edited by Don_F; May 05th 2019 9:24 am.
Re: 95 G30 Tow Project.
Don_F #748024 May 05th 2019 9:44 am
Joined: Nov 2013
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pooh-bah
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Thanks for the details Don. I have no agenda, I just wanted to know facts from someone who's been there and done that.

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