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305 TBI to TargetMaster 350

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Old Nov 21, 2010 | 12:07 AM
  #1  
DRock89RS's Avatar
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From: Maili HI
Car: 1989 RS,1991 Z28
Engine: TargetMaster 350, L98 350
Transmission: 700R4
Axle/Gears: 10 bolt posi 2.73s, and 3.23s
305 TBI to TargetMaster 350

well i was checking my fuel pump last week and while pulling out my tank i ended up having to pull the rearend. no big deal. so in the process i put in a 10 bolt posi with 2.73s and discs. turned out great. so then my TBI was giving me problems so i was gonna put a carb on it and decided ill get a 350. so i found a targetmaster 350 thats supposed to have around 330 horsepower so thats going in. im almost ready to pull the 305 just gotta unbolt the tranny since the torque converter is un bolted and the motor mounts and it will be out. ill keep you all up to date and post some pics cause who doesnt love pics!
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Old Dec 2, 2010 | 05:19 PM
  #2  
DRock89RS's Avatar
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From: Maili HI
Car: 1989 RS,1991 Z28
Engine: TargetMaster 350, L98 350
Transmission: 700R4
Axle/Gears: 10 bolt posi 2.73s, and 3.23s
Re: 305 TBI to TargetMaster 350

ok guys the engine is in, trans and converter bolted up, and now i just got a bunch of small stuff to do. hopefully ill be done soon. this has taken WAYYYY to long already.. if anyone in wisconsin wants to come help please feel free...lol
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Old Dec 2, 2010 | 05:44 PM
  #3  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Didn't see this when you first posted.

Targetmaster - don't hear that much anymore. Probably more like 225 HP. Flywheel gross, not the flywheel net that your TBI was rated at 170 HP.
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Old Dec 2, 2010 | 05:48 PM
  #4  
MetallicaWolfe's Avatar
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From: Muskogee, Oklahoma
Car: 1986 Berlinetta Camaro
Engine: 350 SWAP
Transmission: 700R4
Axle/Gears: Stock
Re: 305 TBI to TargetMaster 350

Originally Posted by DRock89RS
ok guys the engine is in, trans and converter bolted up, and now i just got a bunch of small stuff to do. hopefully ill be done soon. this has taken WAYYYY to long already.. if anyone in wisconsin wants to come help please feel free...lol
Well seems like awfully decent time compared to my swap which has been going on for god knows how long. Still have yet to put it in the car xD
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Old Dec 2, 2010 | 09:14 PM
  #5  
DRock89RS's Avatar
Thread Starter
Junior Member
 
Joined: Sep 2010
Posts: 64
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From: Maili HI
Car: 1989 RS,1991 Z28
Engine: TargetMaster 350, L98 350
Transmission: 700R4
Axle/Gears: 10 bolt posi 2.73s, and 3.23s
Re: 305 TBI to TargetMaster 350

Originally Posted by five7kid
Didn't see this when you first posted.

Targetmaster - don't hear that much anymore. Probably more like 225 HP. Flywheel gross, not the flywheel net that your TBI was rated at 170 HP.
it was in a tow truck so those ratings wouldnt of done much. its well over 300 i know for sure.

and metallica this is taking way to long by a long shot... it should of been done the day i got the engine but im still messing with it...
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Old Dec 3, 2010 | 01:09 PM
  #6  
five7kid's Avatar
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Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Originally Posted by DRock89RS
it was in a tow truck so those ratings wouldnt of done much. its well over 300 i know for sure.
Having been in a tow truck doesn't surprise me. That was the market they were aiming for with that engine, trucks and vans. Made for low-RPM grunting, not power. They made peak power around 4000 RPMs, which would require almost 400 lb-ft of torque, which the engine simply does not produce.

Unless it's had a cam change, I stand by my previous power estimate. Even with a better cam, the heads and low compression will hold it back mightily.

Not trying to be a wet blanket, just realistic. The L69 had as much power as the Targetmaster 350, and the LO3 is pretty close.
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