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  1. Shaun

    fuel sloshing solutions?

    Hey everybody, it's been a while since I've been on here. I've got a 1990 RCSB, with a 5.3/4L65E swap. The problem I'm having (and this happened even before the swap), is that if I'm a little above a quarter tank or lower, and i accelerate hard, the engine bogs down. Now, i know it's because the...
  2. Shaun

    in tank fuel pump for supercharged 5.3

    Hey guys, I'm getting ready to hook up the vortech kit that i bought a few weeks ago. It came with 58 lb hr injectors. It also came with a FMU to be used with an in line walbro, that also came with the kit. It's to be setup as a sort of piggy back system. According to the instructions...
  3. Shaun

    intercooler ideas

    I just purchased a vortech v2sc kit for 99-06 4.8s-6.0s. Now i know it's meant for that truck year, but it's going in my 90 5.3 swap. The only issue in having is the intake tube that routes over the fan shroud doesn't fit. So the remedy is going to be routing instead of over the fan shroud...
  4. Shaun

    not mine, but it's an awesome truck that somebody needs to buy

    http://m.autotrader.com/cars-for-sale/vehicledetails.xhtml?listingId=371649859&numRecords=9&firstRecord=1&zip=33317&searchType=both
  5. Shaun

    somebody needs to buy this!

    http://m.autotrader.com/cars-for-sale/vehicledetails.xhtml?listingId=371649859&numRecords=9&firstRecord=1&zip=33317&searchType=both
  6. Shaun

    idling and shifting issues

    So my swaps been done for a couple months now, and I'm starting to come across some issues. The first is, whenever I start the truck cold, it idles at about 1100-1200 rpms. Which I guess isn't a huge problem since it smoothes out after a minute to around 400-600. But I literally can pull out of...
  7. Shaun

    Tax Time = TIME FOR SOME UPGRADES!!!

    I'm trying to plan out what to do to my 5.3. Has anyone on here used the LSXRT manifold from Fast? I've had my eye on it for quite some time, and was wondering if anyone else has tried it, and their thoughts on if its worth the money? Also, i'm thinking about a cam swap. Anybody got ideas for...
  8. Shaun

    LS swap tach gauge question

    I finally got my swap done. I had a harness modded for my truck. everything single thing is working, except the Tach gauge. from what i understand, the OBS tach cluster reads a 8 cylinder signal, and the 5.3 pcm reads a 4 cylinder signal. When i had my harness modified, and my pcm tuned, the...
  9. Shaun

    A CHRISTMAS MIRACLE!

    I finally got my 03 5.3/4L60E into my 1990 RCSB finished! Here's a couple pictures with a little info. I'll post parts and little snags and solutions i ran into over the next couple of days. The new motor painted a few things, coil brackets, throttle body, throttle cable bracket, valve...
  10. Shaun

    LS swap power steering question

    i've got a 90 rcsb thats receiving a 5.3 with all the accessories, except the ac compressor which i used holleys adapter mount for the stock compressor. my question is, i see a lot of threads saying the power steering bolted right up. What on the power steering bolted up? The stock truck hoses...
  11. Shaun

    tranny cooler line at radiator thread size?

    does anyone know the thread size on the 2 hard lines for the tranny cooler feed/return lines at the radiator? all i've seemed to be able to pull up is 1/4"... is that npt? or even the right size? truck is a 1990 with 7004R AT
  12. Shaun

    anybody know what this is ???

    i'm working on this swap, and i've got most things figured out except this... any idea what it is? It starts right behind the throttle body, and runs to the back of the motor. i'm stumped. some sort of vacuum line i guess, but i cant seem to figure out what it goes to. also, theres a tee...
  13. Shaun

    Coolant bottle question...

    What is everyone using for their coolant bottle? your original overflow bottle? everybody i check on here looks to have the stock bottle, but i thought the LS motors require a pressurized system/sealed coolant reservoir. I got the one that came off the donor truck, and was wondering how other...
  14. Shaun

    getting tach and speedo squared away

    hey guys, i'm trying to figure out what needs to be done to have my speedo and tach read correctly. i have a 90 RCSB, with the 93 tach cluster/drac unit setup. it works perfectly. When i swap over to my 5.3/4L60E, i understand the tach will read off (1/2 of true reading), and i also understand...
  15. Shaun

    oil pressure sensor adapter, anyone know size or pn#?

    i've got everything else i need for the swap...the onlything i cant find specific info on is the adapter size or part number. anybody know? thanks!
  16. Shaun

    LS motor and tranny swap trans crossmember question

    I'm doing a swap on my 90 rcsb 350tbi/700r4, with a 2003 5.3/4l60e out of a rcsb. I'm receiving the cross member from the donor truck with the motor and trans. Can I use the new cross member, and drill new holes in the frame? Or is there a way to mod the existing 700r4 crossmber? Did anybody...
  17. Shaun

    getting 5.3/4l60e in a couple days...donor part questions

    hey everybody. I found a 2003 LM7 5.3 with a 4L60E with only 68k on the odometer, from a short bed silverado 1500. Truck was in a pretty wicked wreck, but all the parts i need are in great working order. The guys giving me any thing i want off the wreck. I told him i need the crossmember...
  18. Shaun

    cold air suggestions for a 90 rcsb

    I have a 90 with the tbi 350. I have a k&n open intake (chrome top and bottom, no tubes). I've got a handful of other minor mods (tb spacer, headers, 3" pipes, dynomax mufflers, stage 2 jet chip). I bought a modified tbi off eBay, that's supposed to produce about an additional 45hp, and I want...
  19. Shaun

    my 90 RCSB 11 year project

    I've been working on this thing for the last 11 years. More so in the last year since I got divorced. so far, i've done a Belltech 4/6 drop, found SS wheels from a guy on a jobsite for $200 with tires and center caps, headers/3" exhaust/flowmasters, stage 2 chip, TB spacer, k&n filter, 94-98...
  20. Shaun

    90 sbrc ac question

    Yesterday at the junk yard I found an ac from a 93 suburban. I for so excited about how unused it looked, and how great the buttons looked, that I didn't realize it has the "max" feature. The one in my truck does not. Does anybody know if it will still work? I really don't want to pull the dash...
  21. Shaun

    LS swap questions.

    I really want to drop a newer 6.0 into my 90 rcsb. I've been looking on eBay and other sources and have been able to find a lot of full drop outs with engine/tranny/wiring harness/by wire gas pedal/ecm...and whatever else they say I need to do the swap. Now,my question to any of you that have...
  22. Shaun

    LS swap questions.

    I really want to drop a newer 6.0 into my 90 rcsb. I've been looking on eBay and other sources and have been able to find a lot of full drop outs with engine/tranny/wiring harness/by wire gas pedal/ecm...and whatever else they say I need to do the swap. Now,my question to any of you that have...
  23. Shaun

    New Member

    hey all. My names shaun, and i've SLLOOOOWWWLLLYYYY working on my 1990 Silverado short bed / reg cab. I've had it for about 11 years, and recently got divorced, so now i'm full time going at it again. Mods so far are : Belltech 4/6 drop. I picked up a set of the stock sport rims. headers, 3"...
  24. Shaun

    real stiff ride, rear end air ride options, ideas? HELLLLPPPPP!!!

    Hey guys, my names shaun and i'm new to the forum. I was wondering if anybody had any ideas or suggestions on how to smooth out the ride on a 1990 short bed regular cab with a Belltech 4"/6" drop? its ridiculous how stiff the rear end is on it. even before it was lowered it was real stiff. just...

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