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Old 10-05-2023, 09:34 PM   #1
HP HUNTER
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Default 1979 C-10 Shop/Race Truck Build

8 years ago we bought this truck with the intention of building a shop truck we could race on Friday nights, and also get my 11 year old son involved with the build. My plan was to build a low buck truck and show my son how to use parts most would through away. Our first engine was a 327 backed by a Turbo 350 and the factory open 3.42 gear, my son learned how to build a engine on the 327, we paid 100.00 for the virgin core. I will go through the build as we built it, our goal now is to run 6.80s in the 660. Heres our plan.

Picture of the truck and first engine (327)
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Last edited by HP HUNTER; 10-05-2023 at 09:41 PM.
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Old 10-05-2023, 10:36 PM   #2
HP HUNTER
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Default Re: 1979 C-10 Shop/Race Truck Build

Our 327 on the dyno, 11.1 compression, 462 fuelie heads, 480/240/108 SFT cam, Performer RPM intake, 750 Holley. Track performance was 13.90 @ 101 MPH going through in second gear (3.42 gear) in Colorado's thin air.
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Last edited by HP HUNTER; 10-05-2023 at 10:56 PM.
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Old 10-05-2023, 11:03 PM   #3
HP HUNTER
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Default Re: 1979 C-10 Shop/Race Truck Build

The next order of business was to build a locked rear end with 5.13 gears, so we bought another truck 12 bolt and built it cheap. Some pictures.
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Old 10-06-2023, 12:22 AM   #4
kansas stocker
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Default Re: 1979 C-10 Shop/Race Truck Build

Known as the "Lincoln Locker" in this part of the country. Hard to keep the run out down but seem to last forever on the dirt.
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Old 10-06-2023, 09:26 AM   #5
HP HUNTER
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Default Re: 1979 C-10 Shop/Race Truck Build

When the rear end was installed we went from a 13.9 to 13.4 ET at high altitude, but I still felt the truck didn't pull through low gear like it should, 1.92 60 foot, knowing the stocker trucks went 1.77 @ Denver this bothered me, although I knew they were 300 pounds lighter, but didn't have my HP. My focus turned to the driveline which is a disaster on a 79 C-10, heavy rear brakes, heavy discs up front, which only accept a heavy tire rim combination, 6 lug. So I looked at the Lamb front brake setup and decided I didn't want to spend the money and wait (wish I had) so I tried to go the LM1 Camaro front disc setup which required I believe a 1981 and newer front spindel, but could never figure out the caliper setup so I had the original style heavy front discs redrilled for a car bolt pattern. I now could get a race style front tire and rim on the truck. I still had the ultra heavy 2 piece drive shaft robbing me............................
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Old 10-06-2023, 09:37 AM   #6
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Default Re: 1979 C-10 Shop/Race Truck Build

So we headed for Kearney Nebraska 2130 feet elevation 4300 DA with bad humidity and ran 12.80 @ 105 MPH but still a horrible 1.82 60 foot, still in the back of my mind a not so quick stocker truck runs 1.77 60 in Denver running 13.8s? I've got something going on here...................

1320/105 = 12.57 getting robbed



Anything that can be done to hit the tires harder at this point only responds with a drastic reduction in ET-more to come.

Last edited by HP HUNTER; 10-06-2023 at 10:00 AM.
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Old 10-06-2023, 09:45 AM   #7
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Default Re: 1979 C-10 Shop/Race Truck Build

Keep in mind at this point this truck has been running about 6 1/2 years from the time it was built to the 12.80 @ Kearney and has about 20,000 miles on it, mostly with the 5.13 gear, we drove it a lot, and the late Harold Bettes felt pretty comfortable over in the passenger seat going lunch!
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Old 10-06-2023, 10:20 AM   #8
Tim H
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Default Re: 1979 C-10 Shop/Race Truck Build

Just how much time was spent porting the heads ? I realize that is something you have a lot of experience in.
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Old 10-06-2023, 10:37 AM   #9
HP HUNTER
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Default Re: 1979 C-10 Shop/Race Truck Build

Quote:
Originally Posted by Tim H View Post
Just how much time was spent porting the heads ? I realize that is something you have a lot of experience in.


Heres some information on the 327 build:

Heads from start to finish maybe 40 hours approx
Flow @ 28 inches SF 600 4.030 bore, 2.020 Intake valve

.200 don't remember
.300 193
.400. don't remember
.480 239
Peak 259 around .650 lift

Hp was 445 HP @ 6600 RPM
TQ was 400 for one RPM point, 390s flat for a long time

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Old 10-10-2023, 10:01 AM   #10
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Default Re: 1979 C-10 Shop/Race Truck Build

So we moved to Texas, I ran the truck @ 450 feet elevation, 2000 DA with the 327 which resulted in a 12.13 @ 107+ with a 1.63 60. at this point I knew the truck would never run 11s in the heat so I decided to build a 350 hoping this would put it into the 11s. Notice my ET @ Kearney 2130 feet 12.80 dropped to 12.13/7.63 @ Little River 450 feet. My drive line losses were showing what every bit of extra power was worth.



1320/107.5 = 12.27 much better at this point, but far from done..........

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