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  1. 89GMCJimmy

    Front 2-3" Springs

    I'm a few hours away from hunting and OHV areas, I liked the ride of the 2"-3" TC "softride" springs with bilstein 5125's w 360/80 valving. They handled pretty good on the freeway and on mild/intermediate OHV and hunting trails. Unfortunately I bent the front pack and need a replacement. I'm...
  2. 89GMCJimmy

    Batteries

    Interesting video however he's only testing one battery of each brand. It seems like everyone has there "best product" these days. I like the Odyssey mostly because they are made in USA, showed up on a bunch of "Top Rated Reviews" and a few guys on here on GM Square Body, Tahoe Yukon forum and...
  3. 89GMCJimmy

    Batteries

    Odyssey 34/78-PC1500DT Automotive and LTV Battery MADE IN USA $350 Also have had good luck with red top Optimas. The Gylling Group of Scandinavia bought Optima in 1994, opening a factory a year later in Colorado. In 2000 Optima was acquired by Johnson Controls. In 2007 JCI laid the foundation...
  4. 89GMCJimmy

    Posi Traction

    If you are certain you have 3.08 gears you can use this easy calculator. http://www.businesspath.com/business_paths/auto/rpm-calc.html
  5. 89GMCJimmy

    Posi Traction

    Yes my comment that was poorly written was in regards to changing the gears to 3.73 would give him quicker off the line performance without any HP gains. I agree completely (heads, exhaust and headers) would help. I have an 89' stock 350CI TBI begging to have 200hp, when i changed the stock 3.73...
  6. 89GMCJimmy

    Posi Traction

    You will not gain HP but the gearing will send you off the line much quicker and have 2 wheel traction not 1 slipping. At 70mph with OD you should be around 2150 rpm
  7. 89GMCJimmy

    Posi Traction

    If you can find a 3.73 with a G80 that would be your best bet. Your stock 85' 305ci <200hp would benefit. Check the wrecking yard or 4x4 shops many Chevy/GMC owners going with 35"+ tires will swap them out. Lots of trucks and Blazer/Jimmy and 1/2 ton Suburbans had them. 1980 - 1988 had 28...
  8. 89GMCJimmy

    Where can I get this connector?

    http://www.delmarwire.com/repair-harness-pigtails/gm-pigtails These guys carry a lot of factory harness/pigtail/connectors for our trucks
  9. 89GMCJimmy

    Leaf Spring hangers- Where to buy?

    ORD x3
  10. 89GMCJimmy

    No way this is right?

    Excellent Thats a cheap easy upgrade Thanks:Big Laugh:
  11. 89GMCJimmy

    No way this is right?

    What would you swap it out for? I'm running stock on my 89' TBI, Have you had success upgrading?
  12. 89GMCJimmy

    Spark plugs for 87 350 tbi

    So late 80's TBI vs 70's-80's Carb Old HEI coil on cap vs points vs newer HEI coil separate from cap. Basically the same vs heat range? or are there different recommended for each specific type. My 89 calls for the CR43TS seem to fine I'm running them at .040 gap cause I read that was better...
  13. 89GMCJimmy

    No way this is right?

    I'm not positive but I believe your Brake Master Cylinder is off a newer vehicle too. My 78' Jimmy had an iron reservoir.
  14. 89GMCJimmy

    No way this is right?

    This is a stock 1989 350 TBI set up, PCV is pass side going into front of TB. Drive side has vent going into riser between TB and air cleaner.
  15. 89GMCJimmy

    No way this is right?

    It depends are you trying to set it up as the 1978 or set it up as the newer engine was stock?
  16. 89GMCJimmy

    modern size wheels that fit squarebody chevies

    This one
  17. 89GMCJimmy

    modern size wheels that fit squarebody chevies

    Front axle truss
  18. 89GMCJimmy

    modern size wheels that fit squarebody chevies

    Yes, So sad I'm not the flashy Californian guy, I also surf in a black wetsuit without bright lettering. Crazy isn't it!!! I may have to buy a new set of tires and request white lettering inside and out.
  19. 89GMCJimmy

    modern size wheels that fit squarebody chevies

    My Jimmy with 3" lift and 33"x12.50 x 15 rubbed on full compression wheel turned with a 10" wide rim. I swapped out for 15x8 rim and it does not touch at all. Both rims had a 3.75" backspace
  20. 89GMCJimmy

    '73 K20 bucking bronco

    15x8 pro comp 8 hole 33x12.5x15 BFG Eventually gonna go with 17x8 and maybe Toyo 285/70/17
  21. 89GMCJimmy

    Quads shocks, going to single shock question?

    What did you end up doing, which position, forward (aux longer) or rear (stock shorter) Seems like there are many posts about keeping shock angle vertical but the stock angle is steeper than aux??? Mine is in stock location and doesn't ride great well on streets and Hwy getting to OHV locations.
  22. 89GMCJimmy

    modern size wheels that fit squarebody chevies

    Damn wish I knew
  23. 89GMCJimmy

    Suburban Suspension Upgrades

    Mine rides pretty good off-road but getting to and from OHV roads on the freeway is pretty bad spongey boaty with the lift how does it affect shock angle? I have the two options also would a Bilstein with different valving help? I'm looking for cheapest option till work picks up again, I'll be...
  24. 89GMCJimmy

    '73 K20 bucking bronco

    Rory did your K5 smooth out My Bucking K5 has 500+ highway street miles and 60+ offroad miles. I can not get my 89' Jimmy to feel tight but not harsh. It does great offroad for a fairly stock truck with a couple ORD HD upgrades. However driving the freeways to and from places you can drive OHV...
  25. 89GMCJimmy

    Leaf springs

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