Conversions & Swaps LSX Engines in Non-LSX Vehicles
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C4 on a budget

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Old Jul 19, 2008 | 08:49 PM
  #21  
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Hey just bought a LS1 hotcam and springs $175 shipped, i really hope this goes well with the 5.3 with manifolds
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Old Jul 19, 2008 | 10:04 PM
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Wow i just put the fuel pump in.....took 15minutes!!! i love the C4
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Old Jul 21, 2008 | 08:52 AM
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parts updated
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Old Jul 25, 2008 | 01:01 AM
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Originally Posted by armyracer11
Ok got a new question.....Do the truck and the cars have different starters? I ask this b\c i am useing the spacer on the crankshaft so use the 700r4 tranny, so do i need to get a truck starter of a can i use one off a LS1?
You should be able to use the LS1 starter. The teeth on the flywheel stay in the same position relative to the block. On the trucks that use the spacer they have a flat flexplate and the spacer goes in front of the flexplate......on yours the flexplate is probably dished so you will put the spacer behind the flexplate.
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Old Jul 26, 2008 | 08:30 AM
  #25  
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Originally Posted by black87c4
How did you shave 600lbs off without stripping it? Well, actually 600+you. They are 3400lbs stock. These cars have very little to remove for weight (all weight is in the structure) . Completely stripping the car, replace back window and carbon fiber hood and I don't think that would even get it sub 3k.

84-85 were non ABS C4s so that dropped alot of weight right there.
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Old Jul 26, 2008 | 11:27 AM
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going to start the swaping today
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Old Jul 27, 2008 | 01:38 AM
  #27  
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Originally Posted by armyracer11
well im shooting for 2900 with me in it, i only wiegh 150lbs. im hope for some 11's on the bottle. But im more interested in blowing it down the highway right now, i am going to leave the 3.31 gears in it.

2900lbs + 330hp + 150shot +3.31gear....should really move at 70mph
What kind of weight reduction did you do to get it to 2750 lbs??
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Old Jul 27, 2008 | 01:39 AM
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Originally Posted by black87c4
How did you shave 600lbs off without stripping it? Well, actually 600+you. They are 3400lbs stock. These cars have very little to remove for weight (all weight is in the structure) . Completely stripping the car, replace back window and carbon fiber hood and I don't think that would even get it sub 3k.
Early C4's were very light.

http://www.corvetteactioncenter.com/...4/84specs.html

3,192 - Automatic Transmission
3,164 - Manual Transmission
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Old Jul 27, 2008 | 07:00 AM
  #29  
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Cool link.
Just got my LS1 84 C4 yesterday. I'll scale it soon, but hope it is well under 3000.

Forgive my ignorance, but is the fuel pump you plan to use internal or external?

Last edited by subtlez28; Jul 27, 2008 at 07:44 AM.
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Old Jul 29, 2008 | 01:53 AM
  #30  
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Originally Posted by armyracer11
thats awsome did you leave the stock rearend in it?
I swapped in a Dana 44 (put 3.91 gears in it)...completely stock halfshafts and all... (th350 /w 4000 converter)

It went 1.4 60fts and never broke it...
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Old Aug 18, 2008 | 04:43 PM
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Any progress?
Any pics?
Any insight on the fuel pump conversion?
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Old Aug 19, 2008 | 02:41 PM
  #32  
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due to the army i havent been able to work on the car, i would actualy liek to get rid of the project.
the 5.3 is in the car now
its an internall fuel pump, fit right in place of the stock
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