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Eating fuel pumps

Did some testing. 13.5v at the pump 14.5v at the battery 5.3 amp draw at the pump Resistance from frame ground to pump connector and to sending unit is basically zero The new injectors are the Five0Motorsports Bosch 19lb upgrades. The pump issues was there with the old injectors. I may...
- Franksmith
- Post #10
- Sep 8, 2020
- Forum: Towing
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Eating fuel pumps

How would I check power bleeding to ground?
- Franksmith
- Post #5
- Aug 30, 2020
- Forum: Towing
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Eating fuel pumps

I dont let it get under 1/4
- Franksmith
- Post #4
- Aug 30, 2020
- Forum: Towing
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Eating fuel pumps

I posted in the towing section because that is the main duty of the truck. 1997 K3500 7.4l 4l80e stock except Five O Motorsports injectors and Gibson short header and flowmaster 50 series I keep burning fuel pumps. 500 to 1000 miles (roughly). I bought the truck with a hole in the bed for...
- Franksmith
- Thread
- Aug 30, 2020
- fuel pressure fuel pump fuel system
- Replies: 12
- Forum: Towing
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Vibration Gremlin

I figured I would share and post the solution for my vibration issue. Bad brake drums was the major cause of my vibration. I replaced the drums and then balanced them. The vibration is virtually gone. It still has a tiny vibration over 85mph haha. But she is 24 years old, 1ton, dually with...
- Franksmith
- Post #5
- May 22, 2020
- Forum: Stock Suspension + Bolt On Kits
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Vibration Gremlin

I will check into the bellhousing, trans mounts, converter and flexplate since I am under the tow pig. Thanks!!
- Franksmith
- Post #3
- Jun 28, 2019
- Forum: Stock Suspension + Bolt On Kits
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Vibration Gremlin

1997 GMC K3500 CCLB DW I have a intermittent vibration while on the highway. It is there every time over 72mph. At lower speeds it comes and goes while towing or empty. Brand new tires Brand new top of the line shocks (helped a little) Driveshaft balanced 1 new brake drum (helped a little)...
- Franksmith
- Thread
- Jun 26, 2019
- Replies: 4
- Forum: Stock Suspension + Bolt On Kits
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Headlight questions

I have found the diagrams for the direct voltage to the headlights upgrade. What size relay should be used? Can we make a electrical pin post for the headlight upgrades with diagrams? Also maybe the electric fan pinned post also? Thanks
- Franksmith
- Thread
- Jun 26, 2019
- fan headlight relay
- Replies: 2
- Forum: Wiring Diagrams
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l29 heads

Thank you all for the input. Greatly appreciated
- Franksmith
- Post #26
- Mar 16, 2019
- Forum: Engine Performance + Maintenance
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l29 heads

Is there a wideband you suggest? I am leaning towards EFILive Probably getting the 411 kit from @Lextech
- Franksmith
- Post #23
- Mar 15, 2019
- Forum: Engine Performance + Maintenance
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l29 heads

I usually run 93 octane because that is what is non-ethanol around this area. This is what I have planned so far. 411 swap coolant loss repair (hope its only head gaskets) electric fan swap controlled by 411 pcm tow/haul mode turned on in pcm ceramic headers and replace the rotted out...
- Franksmith
- Post #17
- Mar 14, 2019
- Forum: Engine Performance + Maintenance
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l29 heads

@John Cunningham Thanks for the advise. It is a towing setup. Would it be possible or worth it to deck the heads a few thousandths to try to bump compression a bit?
- Franksmith
- Post #13
- Mar 13, 2019
- Forum: Engine Performance + Maintenance
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l29 heads

@454cid I was planning on having them checked. I am just trying to get a little ahead of the game incase I need to replace heads due to cracks. The truck is sitting in storage for another month. Once I get it home I have a month to get it tidied up before the first camping trip. She is a...
- Franksmith
- Post #11
- Mar 13, 2019
- Forum: Engine Performance + Maintenance
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l29 heads

I did upgrade the injectors to ebay "upgrade" yellow top injectors. Are you saying I should put bigger ones in if I eventually do a cam upgrade? I did replace the lower intake gaskets and there was no change in coolant loss. I did buy a kit to check for exhaust gases in the coolant. The...
- Franksmith
- Post #8
- Mar 12, 2019
- Forum: Engine Performance + Maintenance
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l29 heads

has anyone used these heads on their 7.4l vortech? I am preparing for the worst if I pull my heads to fit a coolant usage issue and one of them is cracked. I do not want to change intakes or fuel systems. Stock set-up 1997 K3500 cclbdw Maybe someday I will do the GM Performance HO cam...
- Franksmith
- Thread
- Mar 12, 2019
- 454 vortech 7.4l vortech l29 replacement heads stock heads
- Replies: 25
- Forum: Engine Performance + Maintenance
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7.4L Cam shaft options

Any updates? How did the exhaust turn out? Did you have to upgrade the injectors?
- Franksmith
- Post #23
- Mar 10, 2019
- Forum: 96+ Vortec Performance + Computer Swaps
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Gibson GP113S-C

It seems like Gibson is the about the only one who makes headers for the l29. Are people happy with them? Is fitment good in a K-Series? Longevity? Plug wire issues? I need to put mufflers on when it comes out of storage. Wanting a 411 swap. Probably head gaskets due to it using...
- Franksmith
- Thread
- Mar 10, 2019
- 454 vortech 7.4l gibson gibson gp113s-c headers l29
- Replies: 1
- Forum: Exhaust