1973 C20 Cheyenne Super 454 - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**RPOZ11** · 03-13-2016, 12:01 AM

Update
Been driving it every day since the install of the vent line.
No issues; 2 weeks going.
However I did run into a knock issue within the engine just after I got off the freeway.
Going to look into timing.
I spent about an hour with a car builder today.
I am considering installing the MSD Atomic Fuel injection unit.
Their recommendations seem to suggest that this will cure alot of daily driving issues, start up, and customizing the fuel delivery.
They did state that the MSD brain self learns.
This may positively affect my timing issue / engine knock as well.
Its pricey upgrade but one that may provide improved results.

MTCK · 03-13-2016, 12:23 AM

Cool glad you have been able to put some miles on and it's working pretty well. Fuel injection has come a ways, but read through my 77 daily driver thread if you want to temper your expectations a bit. The fuel delivery is a decent amount of work, especially if you want to run two tanks.

JacobSchni · 03-13-2016, 12:25 AM

do you have video of it running?

**RPOZ11** · 03-13-2016, 12:40 AM

Quote:

Originally Posted by JacobSchni

do you have video of it running?

Yes
Ive not been so successful here in posting these.
I can try...

**RPOZ11** · 03-13-2016, 12:44 AM

Quote:

Originally Posted by MTCK

Cool glad you have been able to put some miles on and it's working pretty well. Fuel injection has come a ways, but read through my 77 daily driver thread if you want to temper your expectations a bit. The fuel delivery is a decent amount of work, especially if you want to run two tanks.

Thanx!
We went over a bit about this.
He installed an aftermarket in tank fuel pump
system.
Drilled out the tank, SAFELY, then fitted in their system.
We went over the 73-87 issues.
Its all trial and error but he did seem to have a successful working system.
What I will do is go over your post and address then theorize it all out.

**RPOZ11** · 04-17-2016, 10:14 PM

Got an opportunity today to test the truck as it was 90* today.
Drove it, put it under a few demands in city and freeway driving.
No vapor lock.
So far this has resolved my fuel issues since correcting the prior failure.

MTCK · 04-18-2016, 03:07 AM

Cool, glad she is running right. 90 is hot! We are still getting frost every night.

03-13-2016, 12:01 AM	#26
RPOZ11 72 BB C30 Super LongHorn Join Date: Nov 2002 Location: Chavez Ravine Posts: 1,606	Re: 1973 C20 Cheyenne Super 454 Update Been driving it every day since the install of the vent line. No issues; 2 weeks going. However I did run into a knock issue within the engine just after I got off the freeway. Going to look into timing. I spent about an hour with a car builder today. I am considering installing the MSD Atomic Fuel injection unit. Their recommendations seem to suggest that this will cure alot of daily driving issues, start up, and customizing the fuel delivery. They did state that the MSD brain self learns. This may positively affect my timing issue / engine knock as well. Its pricey upgrade but one that may provide improved results. __________________ 72 BB C/30 Longhorn Super HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM HO72 build : http://67-72chevytrucks.com/vboard/s...d.php?t=714492 2017 SS

03-13-2016, 12:23 AM	#27
MTCK Registered User Join Date: Dec 2009 Location: Fairbanks, AK Posts: 1,830	Re: 1973 C20 Cheyenne Super 454 Cool glad you have been able to put some miles on and it's working pretty well. Fuel injection has come a ways, but read through my 77 daily driver thread if you want to temper your expectations a bit. The fuel delivery is a decent amount of work, especially if you want to run two tanks. __________________ -Marcus 1991 V3500 L29 454 4L80E NP205 D60/14 Bolt 4.56's 1984 K30 292 TH400 NP205 D60/14 Bolt 4.56's flat bed 7'6" Meyer Plow 2022 Silverado 3500 L8T Project Daily Driver Project Heavy Hauler Project Plow Truck

03-13-2016, 12:25 AM	#28
JacobSchni Registered User Join Date: Feb 2014 Location: Mukwonago, WI Posts: 268	Re: 1973 C20 Cheyenne Super 454 do you have video of it running? __________________ 1983 Scottsdale K10 496 /t400 fmvb /208 /D60 and 14ff with Locker /35x12.5x15 mt baja mtz 680hp/720ftlbs of NA fun

04-17-2016, 10:14 PM	#31
RPOZ11 72 BB C30 Super LongHorn Join Date: Nov 2002 Location: Chavez Ravine Posts: 1,606	Re: 1973 C20 Cheyenne Super 454 Got an opportunity today to test the truck as it was 90* today. Drove it, put it under a few demands in city and freeway driving. No vapor lock. So far this has resolved my fuel issues since correcting the prior failure. __________________ 72 BB C/30 Longhorn Super HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM HO72 build : http://67-72chevytrucks.com/vboard/s...d.php?t=714492 2017 SS

04-18-2016, 03:07 AM	#32
MTCK Registered User Join Date: Dec 2009 Location: Fairbanks, AK Posts: 1,830	Re: 1973 C20 Cheyenne Super 454 Cool, glad she is running right. 90 is hot! We are still getting frost every night. __________________ -Marcus 1991 V3500 L29 454 4L80E NP205 D60/14 Bolt 4.56's 1984 K30 292 TH400 NP205 D60/14 Bolt 4.56's flat bed 7'6" Meyer Plow 2022 Silverado 3500 L8T Project Daily Driver Project Heavy Hauler Project Plow Truck



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