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Bad Knock, need new engine

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Old Jan 24, 2011 | 04:04 PM
  #1  
Texas T/A's Avatar
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Bad Knock, need new engine

Hello, thought Id ask for some advice on this one. I bought a 92 Trans Am convertible as a parts car but decided to get her back on the road. The guy who sold it to me said the crank is bad. he replaced the bearings and it burned another one. I'm thinking about getting a 350. What 350 blocks will work with the 92 TPI setup? And where should I look for one? Looking for new or rebuilt
Thanks
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Old Jan 25, 2011 | 03:19 PM
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From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: Bad Knock, need new engine

Any 350 block will work, the heads will be where you will have to be careful. Your TPI setup uses the 1987+ heads, so you'll need to get center bolt style heads if you don't want to have to modify the lower intake manifold.

what to look for depends all on your budget, what you can do mechanically yourself, and what you want to do with the car.
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Old Jan 25, 2011 | 04:02 PM
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Re: Bad Knock, need new engine

All-around easiest thing to do would be to get a functionable junk TBI or Vortec truck short block, and put your cam, valve train, heads, & intake on it.
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Old Jan 25, 2011 | 04:08 PM
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From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: Bad Knock, need new engine

Originally Posted by sofakingdom
All-around easiest thing to do would be to get a functionable junk TBI or Vortec truck short block, and put your cam, valve train, heads, & intake on it.


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Old Jan 25, 2011 | 08:48 PM
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From: In my garage next to my car
Car: 89 Red IROC
Engine: 5.7
Transmission: 700R4
Axle/Gears: 2.77
Re: Bad Knock, need new engine

All 350 blocks are not created equal.
If its just a block you want then you're going to need a 86+ because of the one piece rear main seal. The crank for that will also affect your flywheel/ flexplate. Also real early will have the dipstick on the drivers side but no need to get into all the details here.
Then watch out for getting too late of an engine as they don't have the hole for the water pump bypass since the bypass was done with the tubes coming off the pump.

Its little things like that get you to say "oh fudge!" when you stumble on them
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