The GSFMech Build

[Number98]

Great detail job under the hood.... this is one great looking truck!

[Tom Vogel]

Did you make any changes to your motor when you rebuilt it?

[GSFMECH]

Yeah sure did, I made a lot of changes. I wanted a little more thump even though it ran good before and was impossible to hook up. I was running L2465 Speed Pro pistons before and 781’s but they were stock except for a 3 angle valve job and had a lot milder cam. I machined the heads for 2.19 and 1.88 SS valves with the cut down stems, and machined them for PC seals and comp cams dual springs and did a real nice bowl porting and 3 angle seat job. Factory steel crank, 3/8” truck rods and I had aquired a vintage set of L2349 TRW closed chamber 30 over pistons that I used this time, this boosted the compression a little. With a set of steel shim gaskets it came out to 10.3:1. I also had it balanced. I added an old style LS-7 corvette trap door oil pan, windage tray and oil pump (Chevy still carries this stuff). Lunati Voodoo cam, GM long slot rockers, performer RPM intake, I modified my 850 double pumper for 4-hole idle to try and get some of the hit out of the cam with the AC on, Mallory coil and pertronix ignition, big tube full length Hooker Chevelle headers. I also went with a TCI breakaway converter. It runs real good but it took a few months tinkering to get the advance curve and spark plug heat range right. It was a ping monster for awhile but it’s just about sorted out. I still need to play with the jetting a little more.
Thanks for all the compliments ya’ll

[Graham57a]

Beautiful truck! Love a solid paint cheyenne with full trim, especially lowered on coys! Quick question, when you dyed your seat belts how did you keep the white tags from getting color on them? I've wanted to do this for a while but was afraid of dying the tags.

[Fatherof3]

Nice truck! Love it

[jlsanborn]

Sounds like a really cool motor! Those are a domed piston right? Are you able to run pump gas?

[Bennett68C10]

We need a video of that bad boy, what Voodoo cam did you go with. Roller or flat tappet?

[GSFMECH]

Originally Posted by Graham57a

Beautiful truck! Love a solid paint cheyenne with full trim, especially lowered on coys! Quick question, when you dyed your seat belts how did you keep the white tags from getting color on them? I've wanted to do this for a while but was afraid of dying the tags.

This was weird, when I dyed them I thought it would mess up the tag but the dye never touched the tags, it had no affect on them at all.

[GSFMECH]

Originally Posted by jlsanborn

Sounds like a really cool motor! Those are a domed piston right? Are you able to run pump gas?

Yes they have domes. It took a lot of tuning but yes I can run 93 octane pump gas. A lot of it is keeping the quench height close as you can when you build the motor. I'm running right around .040"

[GSFMECH]

Originally Posted by Bennett68C10

We need a video of that bad boy, what Voodoo cam did you go with. Roller or flat tappet?

It's a hydraulic flat tappet No. 10110703LK, specs are int .542 Exh 554, Duration @ .050 Int 227 Exh 233, 110 L.S. I grooved the lifter bores to help lube the cam and use Valvoline VR-1 With Zinc additive. I don't have a video of it but if I did I wouldn't know how to load it

[smbrouss70]

Take a video of it when you get home, we'll get it loaded for you.

[GSFMECH]

Will do Steven, Barry had one he posted on facebook way back but I don't know what happened to it.

[nsulacountry]

Originally Posted by GSFMECH

Last for now.

Oh yeah, for those that asked the Lizard skin makes a BIG difference. You can't feel any engine heat at all and it's much quieter. I can't wait for warm weather and try the AC.

Cheesing for the camera at Stine's I see! Glad to see a local on here. I'm on the two step plan. Step 1, build shop. Step 2 tear down the 1979 C20 and insert a Vortec 8.1L... My plan for now!

CT

[GSFMECH]

How bought that, another one from Natchitoches. There are a few of us on here.

[Bennett68C10]

Originally Posted by GSFMECH

It's a hydraulic flat tappet No. 10110703LK, specs are int .542 Exh 554, Duration @ .050 Int 227 Exh 233, 110 L.S. I grooved the lifter bores to help lube the cam and use Valvoline VR-1 With Zinc additive. I don't have a video of it but if I did I wouldn't know how to load it

Thanks for the cam specs, I was looking at that same one. Do you have any issues producing enough vacuum for your power brakes and AC? How is the idle on it, nice and lumpy

[GSFMECH]

To be honest I’m struggling a bit with the AC, the idle is pretty lumpy. I idle it up when I run the AC. No problems at all with the brakes, it has decent vacuum, right around 10” or so.

[Bennett68C10]

Thanks, this is what I'm worried about with mine, it has a really lumpy cam and I'm worried about the AC.

[GSFMECH]

New addition, comfort grip steering wheel, I love this thing!!

[Hart_Rod]

Originally Posted by GSFMECH

New addition, comfort grip steering wheel, I love this thing!!

Nice!

[GSFMECH]

I ran across this photo from last year and I thought it was cool so I had to post it. This is Wynne (HuggerCST) and me going down the highway.

[jeh]

Originally Posted by GSFMECH

I ran across this photo from last year and I thought it was cool so I had to post it. This is Wynne (HuggerCST) and me going down the highway.

Cool pic...

[cericd]

Love the pic. Perfect rake in my opinion.

[Bennett68C10]

Sweet pic of a couple beautiful trucks

[mcbassin]

I think have the same steering wheel you bought.

I ran across this photo from last year and I thought it was cool so I had to post it. This is Wynne (HuggerCST) and me going down the highway.

Very cool picture.

[j carter]

Love this truck