LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

lt1 oil pump help?

Old Mar 17, 2007 | 02:12 PM
  #1  
eddies26's Avatar
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lt1 oil pump help?

Ok guys well I serched & read all old articles but none really answer my questions so here goes & thanks in advance

I have a lt1 96 corvette block with corvette pan

To my knowledge the corvette pan is a quart larger then a stock z28 pan
which is why I used it.

Now the questions is I bought a gm perf parts pump 12555884 high pressure to put back in & it uses a 5/8 inlet

original pump uses a 3/4 inlet

obvious answer right get a 5/8 inlet p/u

in that lies the problem I found a 5/8 inlet for gm cars but it is angled a bit different & the screen portion is much larger

The guys at the parts store can't seem to find a 5/8 inlet listed for a 96 vette so if anyone has any input I would really appreciate it
Old Mar 17, 2007 | 05:15 PM
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??

Anybody
Old Mar 17, 2007 | 07:45 PM
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make your own cut and weld its been done as a last chance option
Old Mar 17, 2007 | 09:42 PM
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I believe the 12555884 is for the original LT-1 (not LT1), but it still may work. The 1993-4 F-body LT1s used a 5/8 screen, but I don't know if it would work with your pan.
Old Mar 17, 2007 | 10:18 PM
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i believe they r a deeper pan so longer p-up but i could be wrong
Old Mar 18, 2007 | 01:10 AM
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Is this a race engine with loose bearing tolerances? If not, just buy a stock GM pump for that engine and be done with it. A high pressure pump is not even close to being necessary for a street engine.
Old Mar 18, 2007 | 01:26 PM
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1

thanks for the feedback guys
Old Mar 18, 2007 | 01:31 PM
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11

thanks shoebox
you were right on with the earlier model
according to my parts site the corvette in 93 had a 5/8 pickup also
so I am ordering both to see the difference
By the way your site is great it has helped me alot
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