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86 Trans am 350 swap

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Old Nov 10, 2007 | 06:11 PM
  #1  
Mirocz87's Avatar
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Joined: May 2007
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From: Lansing, MI
Car: 1988 Formula
Engine: 305 TPI
Transmission: t-5
86 Trans am 350 swap

Heya guysd.. My buddy and i have just finished a 305tpi to a 350tpi swap.. the car runs and drives but its running rich and seems to lack the power it should have.. also when you want to tap the throttle it sometimes wants to hesitate. The motor we put in the car is a 350 out of an 80's truck? we think.. its got 202 vette heads an rv cam (mild) hooker headers and the intake computer and all of the sensors are from the stock 305. is there anything i need t chage with this setup? also im using the stock air cleaner wich i think is VERRY restrictive.
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Old Nov 10, 2007 | 06:55 PM
  #2  
tweeker's Avatar
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Joined: Nov 2007
Posts: 83
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From: Denver NC
Car: rs convertible,06 dmax,07 tahoeltz
Engine: l03
Transmission: 700r4
Axle/Gears: 3:42 auburn posi unit
Re: 86 Trans am 350 swap

Did you use 350 injectors the 305's are different
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Old Nov 10, 2007 | 07:07 PM
  #3  
KrisW's Avatar
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: 86 Trans am 350 swap

You need to check your fuel pressure. You should either be running 350 injectors or turn the fuel pressure up. Make sure you have a good flowing air filter in your can, it should be fine.
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Old Nov 10, 2007 | 09:21 PM
  #4  
Mirocz87's Avatar
Thread Starter
Junior Member
 
Joined: May 2007
Posts: 71
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From: Lansing, MI
Car: 1988 Formula
Engine: 305 TPI
Transmission: t-5
Re: 86 Trans am 350 swap

Alright cool thnx.. one more question tho.. how do i turn up the fuel pressure?
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Old Nov 10, 2007 | 09:31 PM
  #5  
KrisW's Avatar
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20 Year Member
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Joined: Sep 2004
Posts: 2,777
Likes: 7
From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: 86 Trans am 350 swap

You will need to replace your regulator with an adjustable one. You can get them from partsamerica.com pretty cheap.

Good luck!
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