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496 BBC Build/Install Thread

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Old 09-16-2014, 11:19 AM
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Default 496 BBC Build/Install Thread

Hey everyone! I have a 1977 K5 with a few healthy mods on it already. It has a Voodoo Lunati Cam, ported camel hump heads, Victor Jr Intake, Holly 850 Carb, 4" Rough Country Lift (looks like 6"). It runs very well as is.

Alas, I have found myself needing more power and wanting to dip into some sand drag racing. I am building a 496 BBC that sould have around 10.5:1 compression and a 200 shot of spray. I will be using this thread as a way to share my progress.

However, I have the stock TH350 with Dana 44 and coporate 12 bolt still. I honestly believe the previous owner slapped in 2.76 gears to help with fuel mileage. I say this because a year ago I did run it at the sand drags and did not even come close to hitting 3rd gear at the 300' mark.

So heres where I need some advice:
  • TH350 - I need to beef it up to handle the new power. What all needs to be redone? Clutches? I have a shift kit installed already.
  • Dana 44 - I am getting some new 30 spline axles and b eefed up U joints. What gears do I need? 4.10's with LSD?
  • Corporate 12 bolt - 30 spline axles beefed up ujoints and 4.10's with LSD?
  • NP203 TC - I think I will be modding this to be part time 2 wheel drive. I will need new hubs right? What else do I need?
  • Torque Converter - how big?
  • Traction Bar
  • Wheels/Tires - I currently have 15x8" aluminum rims with 33x12.5" BFG All Terrains. Should I go wider with TSL Thornbirds?
  • Suspension - I want to go coil over but that is super pricey. Should I go with a 2" lift instead of the 4"? I need to lower it to make it more stable at high speeds right?
  • Steering - new hydro steering box?
  • Roll Cage
  • 5 Point Harness
  • What else do I need to mod?
I will be posting some pics soon of my current set up just to show ya'll where I am starting from. I look forward to hearing any and all input positive and negative! I got thick skin
 
  #2  
Old 09-18-2014, 11:08 AM
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Does nobody else have a similar setup on this forum!? Bueler...buelerrrrr

Anyway,

UPDATE:
Purchasing a TH350 rebuild kit
  • Dana 44 - I am getting some new 30 spline axles and b eefed up U joints. What gears do I need? 4.10's with LSD?
Did some research and it looks like I already have 30 splines which should be ok. All I need now are 4.10 gears and a install kit with new bearings etc...
  • Corporate 12 bolt - 30 spline axles beefed up ujoints and 4.10's with LSD?
Found a true trac with 4.10 gears on craigslist. Will also get an install kit.
  • NP203 TC - I think I will be modding this to be part time 2 wheel drive. I will need new hubs right? What else do I need?
Getting a part time kit and rebuilt kit
  • Torque [COLOR=blue !important][COLOR=blue !important]Converter[/COLOR][/COLOR] - how big? Still working on that
  • Traction Bar - Offroad Design makes a nice one
  • Wheels/Tires - I currently have 15x8" aluminum rims with 33x12.5" BFG All Terrains. Should I go wider with TSL Thornbirds? Still not sure
  • Suspension - I want to go coil over but that is super pricey. Should I go with a 2" lift instead of the 4"? I need to lower it to make it more stable at high speeds right? Still not sure
  • Steering - new hydro steering box? Still not sure
  • Roll Cage - Adding another roll bar and will have them welded together. Might have a prefab one added in the cab.
  • 5 Point Harness -Eventually
  • What else do I need to mod?
 
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Old 09-22-2014, 02:33 PM
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Pics as she sits now:

496 BBC Build/Install Thread-blazer-1.1.jpg

496 BBC Build/Install Thread-blazer-1.2.jpg

496 BBC Build/Install Thread-blazer-1.3.jpg

496 BBC Build/Install Thread-blazer-1.4.jpg
 
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