LT4 cam specs

ECMnut at aol.com ECMnut at aol.com
Sun Feb 8 02:01:22 GMT 1998


In a message dated 98-02-07 02:19:33 EST, you write:

<< 
 Try 24502586.  You mean the engine building book and not the
 high perf parts book, right?  Might be in there, but check
 the copyright.  The book I bought last year is dated 1993, I
 believe.  It's at the shop, so I'll look tomorrow.
  >>
Nope, the GM Performance Parts book.
I screwed up the name in the last post.
Yep, it IS the "hot cam".  Hyd. roller,  218/228 @ .050,
 525 lift on both ( w/1.6 rocker), 112 centerline.
 
Interesting note at the bottom of the page (41). 

~~~~~~~~~~~~~ start quote ~~~~~~~~~~~~~~~
The LT4 cam P/N 24502586 was designed to be used in a number of 
different engines.  Therefore, the following change may need to be made 
for correct assembly of engine:
For LT1 and L98 engines 1995 and before, the dowel pin in the end of the 
camshaft must be pushed in so extension from end of cam is .30 +/-.01", 
the same as the production part. 
For 1996 Lt1 & LT4 engines, the dowel pin is in the correct position, 
extending .620" from the end of the camshaft.  This camshaft has a
 fuel pump lobe.
~~~~~~~~~~~~~~ end quote ~~~~~~~~~~~~~~
HTH,
BTW, you can get the Performance Parts catalog online,
in acrobat format.  Go to a search engine, and search for 
"GM Performance Parts".   I have the low-tech paper version.  

Mike V.



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