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  1. K

    Best Fuel Tank Selector Valve Brand?

    Hello, Working on my 78 C10 and I am wondering if there is a brand of fuel tank selector valve that works longer than six months. I’ve read the threads of guys running just one tank and then using a crossover pump to fill the other. I’d like to avoid doing that or running just a single tank...
  2. K

    Opinions on D70 closed knuckle front axle

    Thank you for the reply. I was wondering if there was any value to it but you answered my question when you said you sent one to the scrap yard.
  3. K

    Opinions on D70 closed knuckle front axle

    Hello all, I’m currently looking at 74 three-quarter ton square body that had a IH Dana 70 closed knuckle axle swapped in front. I know absolutely nothing about them after a little research it seems that they’re not really desirable and not much aftermarket for them if any. What are your...
  4. K

    Anyone have a LS swapped 3+3?

    I will, I have always wanted a square body cclb drw 4x4, so I’ll take my time to make it exactly like I want.
  5. K

    Anyone have a LS swapped 3+3?

    I came across this information while surfing the web
  6. K

    Anyone have a LS swapped 3+3?

    While short lived in trucks the 8.1 had lots of industrial and marine applications so parts are available. Howell makes a direct stand alone harness for the 8.1/Allison not listed on their site (I called in and asked) for $750-$850 which is the easiest route. It’s 4 wire with the option Cruise...
  7. K

    eBay drop out L8T mated to 6L90E thoughts and/or drivetrain suggestions.

    I ended up grabbing a 8.1/A-1000 combo with harness and ECM for $1400 on FB market place
  8. K

    Anyone have a LS swapped 3+3?

    Well I have the engine and trans for the truck, Vortec 8100 and Allison 1000. Engine, trans, harness and etc $1400 on FB Market Place. I get to keep the big block and get an overdrive.
  9. K

    Trading 74 C20 for 73 C30 Dually

    Unless that dually is absolutely damage and rust free, like no rot, cracked fiberglass or dents whatsoever, I’d pass. Unless you really need the dually. The 454/SM465 is a killer tow combo. I had a c30 dually like that with 4.10 I towed stupid weight with it at reasonable speed. The value is...
  10. K

    Duramax/Square body swap? Thoughts?

    I am in a similar position. Building a crew cab dually 4x4 from 3+3 C30 I have everything but engine and trans. I looked into this wanting to go with an LBZ and it’s a lot more labor wise. The mods to fit the cab to a new frame are a lot harder than mods to fit a newer engine to older frame. The...
  11. K

    '89 Crew Cab body to '90 Suburban frame?

    I was about to post something about this regarding a truck I seen online. It seems like a regular cab long bed or suburban frame. I think it’s the long bed frame since the gap between cab and rear wheel is decently spaced. I have a clean 4x4 rclb K30 frame. This is one of the nicest square...
  12. K

    Anyone have a LS swapped 3+3?

    Thank you.
  13. K

    Anyone have a LS swapped 3+3?

    It’s one one of the many reasons I’m pretty set on the l96/6L90E. I am currently searching for np205 to 6l90 options.
  14. K

    Anyone have a LS swapped 3+3?

    From what I understand it’s a fee to unlock the ECM individually on the L8T, it’s per VIN. I was told I could run a E38 ECM but it would complicate the cruise control, if even possible. Like I said I’m trying to learn as much as I can before I make the final decision. I wasn’t aware of this...
  15. K

    Anyone have a LS swapped 3+3?

    Thank you for the info. This is my concern with the 4 speed auto and 1-1 gear, the 6l90 has a 1.15-1. So with 3.73 and 1.15-1 gear you’d have a final gear reduction of 4.30 where the 1-1 and 4.10 would be at 4.10. I think the last thing to do is regear once I have the drivetrain in I’ll see...
  16. K

    Anyone have a LS swapped 3+3?

    L8T and 6l90e are gonna put me over budget to get what I want. If I can do it for $12k-$14k I’d go for it but like I said all in with cruise control and tow/haul is close to $17k L29 is an excellent option but I’m not thrilled about a 4 speed auto. If I were towing heavy with it I’d go for 7400...
  17. K

    Anyone have a LS swapped 3+3?

    What engine/trans/gear/tire are you running?
  18. K

    Anyone have a LS swapped 3+3?

    The more I look at figures and dollar to hp the L96 and 6l90e look like the way I’m gonna go. The support and aftermarket are there it’s a lighter more efficient package with good power and decent fuel economy. The only mods would be a tune, ceramic coated headers and electric fans possibly.
  19. K

    Anyone have a LS swapped 3+3?

    I won’t use anything but GM FI. I like the idea Of the vortec 7400 but I’m apprehensive since it’s an old platform I feel like support and parts availability might be an issue. The LT seems like twice the cost of LS while only offering 25% more power. Although I’m still undecided I think the LS...
  20. K

    Anyone have a LS swapped 3+3?

    That’s still a decent mpg for your setup.
  21. K

    eBay drop out L8T mated to 6L90E thoughts and/or drivetrain suggestions.

    The extra cost and complications are leaning me away from this set up. Spear tech wants $4k for computer and harness mods to retain cruise control, tow/haul and manual shift. All in $16k-$17k for the L8T/6L90E. Currently exploring the L96/6L90E 360hp/380tq, lower mileage combos are $5-$6k...
  22. K

    Anyone have a LS swapped 3+3?

    What gear ratios are you running? The D70 rear has 4.10 and D60 front I’m getting is 3.73. I’m gonna assume the D60 gears are in better shape. Been considering 3.73 and LSD swap on the D70. I’m also staying with 235/85R16 tires.
  23. K

    Anyone have a LS swapped 3+3?

    What’s pro-flo setup in? What fuel economy like?
  24. K

    Anyone have a LS swapped 3+3?

    What’s your highway fuel economy like? I have had a few 454 carb trucks that pulled decent but mpg was 6 to 9 empty highway. I have the opportunity to get a 96 2500 suburban for $2500, rebuild of the 454 is $2.5-$3k and 4l80e rebuild is around $1.5k. $7k for a new drivetrain is pretty...
  25. K

    Anyone have a LS swapped 3+3?

    Every one I see installed is problematic, Vice Grip Garage left his cat farm crew cab in a parking lot during power tour couldn’t get the trans to shift out of 2nd with the Holley setup and has had multiple issues. My main goals for this truck is reliability. I’d like to drive to 1500 mi No...

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