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Old Mar 18, 2002 | 12:25 PM
  #1  
eatmydust's Avatar
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From: Missouri
Car: 1986 IROC-Z28
Engine: 305 TPI
Transmission: 700R4
stock headers

I'm fixing to rid my 86 IROC of its 305 and get me a 350 tpi. My question is, will the stock headers bolt up to the new 350? I probably won't have enough for new headers after buying and installing the engine.
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Old Mar 18, 2002 | 12:32 PM
  #2  
CraZ-28's Avatar
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From: Tucson, AZ
Car: 1991 Z-28
Engine: Can you say stroke?!?!
Transmission: 700-r4
Axle/Gears: 3.42
They should. The differences between the 2 are all internal. Externally they are the same.
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Old Mar 18, 2002 | 12:35 PM
  #3  
Tas's Avatar
Tas
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stock headers you have manifolds stock, headers are tubular. Yes they will bolt up. 305 TPI should have the same manifolds as a 350 TPI.
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Old Mar 18, 2002 | 12:39 PM
  #4  
eatmydust's Avatar
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From: Missouri
Car: 1986 IROC-Z28
Engine: 305 TPI
Transmission: 700R4
Ok, sorry, i meant manifold. So all i gotta do, take out my 305, put in 350 and everything should bolt up exhaust wise? Probably should move this to engine swap....
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Old Mar 18, 2002 | 01:26 PM
  #5  
Mark A Shields's Avatar
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Joined: Jan 2001
Posts: 7,164
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From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Yep, but this is a good time to put headers on so you can save a little hassle later.. Of course money permitting.
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Old Mar 18, 2002 | 02:15 PM
  #6  
IROCZTWENTYGR8's Avatar
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From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Would of been nice to have stock headers.
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