Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

v6 to v8 almost complete

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Old Aug 10, 2005 | 07:54 PM
  #1  
7plagues's Avatar
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From: UofA(Tucson), AZ
Car: 92 Precision Red Firebird
Engine: v6->357 vortec xe262h rpm intake
Transmission: t5-> t56
Axle/Gears: 10bolt 3.42s
v6 to v8 almost complete

alright!!! i started about 2 weekends ago and by this monday it should be purring. i went from a v6-t5 to a vortec headed 79 010 block 357 with XE262H cam full hooker exhaust and a t56 for the trans! wooot. the wiring is gonna be fun. ill get pics up later. unfortunatly i dont have any of the v6 in the car. just a few of the engine out and im gonna take some of the v8 in!
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Old Aug 10, 2005 | 10:26 PM
  #2  
Project: 85 2.8 bird's Avatar
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From: BFE, MD
Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
good for you
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Old Aug 13, 2005 | 10:12 AM
  #3  
kboehringer's Avatar
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Joined: Feb 2005
Posts: 669
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From: Atlanta, GA
Car: 1982 - Z28
Engine: 350 / CCC Q-Jet
Transmission: THM-700R4
Axle/Gears: 10 Bolt - 3.73
Re: v6 to v8 almost complete

Originally posted by 7plagues
the wiring is gonna be fun!
7plagues,

You didn't mention what you plan was for the wiring, if you were eliminating the computer, original equipment guages, etc. My son and I wanted to keep the computer functions and original dash equipment we replaced the entire engine compartment harness from an appropriate donor car. However, we screwed up and didn't replace the harness behind the dash thinking we'd only have a wire or two to repair back there.... MAJOR SCREW UP. We're now looking to find another appropriate donor to grab the internal harness from. The harness behind the dash is not at all compatible with the engine compartment harness(s).

Sincerely,
Kurt
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Old Aug 13, 2005 | 08:30 PM
  #4  
7plagues's Avatar
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From: UofA(Tucson), AZ
Car: 92 Precision Red Firebird
Engine: v6->357 vortec xe262h rpm intake
Transmission: t5-> t56
Axle/Gears: 10bolt 3.42s
im keepin all the gauges and just taking in out the wires from the ecm that are not used.
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Old Aug 14, 2005 | 09:48 PM
  #5  
7plagues's Avatar
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From: UofA(Tucson), AZ
Car: 92 Precision Red Firebird
Engine: v6->357 vortec xe262h rpm intake
Transmission: t5-> t56
Axle/Gears: 10bolt 3.42s
ok here are some pics!


No engine!!!


v8 in. excuse the wire nest. lol its cleaned up now


t56 with a cheap ws6store shortie.


my 90s taurus fan with the old butchered shroud(i plan on fixin it up later) wired to a switch with a temp sensor on and low and high manual on's.


this is the car just sitting there with the v6 springs. i havent taken it out for a drive so we'll see how they work. ive also got some stock v8 ones that might go in. car should be done with exhaust tomorrow and running!!!!
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Old Aug 15, 2005 | 05:47 PM
  #6  
7plagues's Avatar
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From: UofA(Tucson), AZ
Car: 92 Precision Red Firebird
Engine: v6->357 vortec xe262h rpm intake
Transmission: t5-> t56
Axle/Gears: 10bolt 3.42s
ok im having a prob with the fuel pump it only comes on for a sec and then the engine can start and run for aobut 40sec and then dies?!?!?!??!?HELP
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Old Aug 16, 2005 | 11:24 PM
  #7  
kboehringer's Avatar
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Joined: Feb 2005
Posts: 669
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From: Atlanta, GA
Car: 1982 - Z28
Engine: 350 / CCC Q-Jet
Transmission: THM-700R4
Axle/Gears: 10 Bolt - 3.73
Wish I could help...Don't know enough..

7plagues,

We're running a cheapo mechanical off the block. Although we had some initial problems with vapor lock (caused by the headers being a bit too close to the fuel lines) we now have no fuel problems.

Maybe a $12 mechanical is the answer. By the look of those wires in the previous post you may be better off. I believe there is a Fuel Pump Solenoid on the driver's firewall that could be the place to start looking for the problem if you're staying electric.

Probably didn't help but it's all I got!

Sincerely,
Kurt
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Old Aug 17, 2005 | 01:30 AM
  #8  
7plagues's Avatar
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From: UofA(Tucson), AZ
Car: 92 Precision Red Firebird
Engine: v6->357 vortec xe262h rpm intake
Transmission: t5-> t56
Axle/Gears: 10bolt 3.42s
got it goin today. went and bought a oil pressure/fuel pump sensor dealy. well the car runs like a clock and sounds so damn good with the hooker 2055s and aerochamber with no cats. oh *** i love this car. for not being broke in or anythin i can get it to chirp third!!!LOL but only once. it needs to be babied more till 400-500miles. thanx for the reply though
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