C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LT1 to LT4 conversion kit????????

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Old Feb 14, 2004 | 10:31 PM
  #21  
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Default Re: LT1 to LT4 conversion kit???????? (84LT1)

The HP numbers are great. What would the dyno RWHP numbers be for the change LT1-LT4. Has anyone done a dyno run.
mickeyt :auto:
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Old Feb 14, 2004 | 11:11 PM
  #22  
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Default Re: LT1 to LT4 conversion kit???????? (steve9899)

As far as numbers are concerned everyone has to remember that it's not just the heads, cam and intake that are being changed here. They are also adding a 58mm TB, 30lb. injectors and headers better flowing cats and mufflers, which helps a great deal to increasing performance.

I am still thinking that the conversion is the way to go, based on what I have read.
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Old Feb 15, 2004 | 12:28 AM
  #23  
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Default Re: LT1 to LT4 conversion kit???????? (Kizmo)

I also forgot about the fact you could sell your stock heads and intake if you got the LT4 Upgrade kit but take a look at the diference in flow #s between a set of stock LT4 heads and a CNCed set of LT1 heads from TEA. The Flow #s for TEA are from thier web site and the LT4 are from chevy performance

TEA CNC LT1 Heads
Lift Int Ex
.100" 64 53
.200" 135 110
.300" 195 155
.400" 238 192
.500" 260 215
.550" 263 225
.600" 265 232

Stock LT4 heads
Lift Int Ex
.100" 78 67
.200" 147 109
.300" 197 133
.400" 230 159
.500" 250 172
.550" N/A N/A
.600" 243 177




[Modified by 84LT1, 11:31 PM 2/14/2004]
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Old Feb 15, 2004 | 07:30 AM
  #24  
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Default Re: LT1 to LT4 conversion kit???????? (84LT1)

whatever way you go, dont wory about the rockers with the LT4 conversion or Hotcam kit. They both are adjustable, not like the origional factory LT4 cars had.
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Old Feb 15, 2004 | 09:02 AM
  #25  
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From: Outer Banks NC FIRST IN FLIGHT
Default Re: LT1 to LT4 conversion kit???????? (84LT1)

I also forgot about the fact you could sell your stock heads and intake if you got the LT4 Upgrade kit but take a look at the diference in flow #s between a set of stock LT4 heads and a CNCed set of LT1 heads from TEA. The Flow #s for TEA are from thier web site and the LT4 are from chevy performance [Modified by 84LT1, 11:31 PM 2/14/2004]
This is really good comparison info. Do they have specs. on what ported LT4 heads flow like?

One other thing, how much can selling the other parts earn, in regards to offsetting the cost of the conversion?
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Old Feb 15, 2004 | 09:53 AM
  #26  
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Default Re: LT1 to LT4 conversion kit????????

I am happy with mine.. I just finished it.. I obtained all my parts used w/22K miles on them with the exception of the Hot Cam I bought new. and the 52mm Throttle body. Mine is an Auto and it idles really nice meaning slightly rough and the exhaust tone has changed a bit..
-Rick
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