98 Block mods?
10-23-2006, 05:38 PM
#6
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Originally Posted by ROCNDAV
I opened up the crossover galley on the rear cover and made a matching one on the block with an air grinder, using an old gasket as a template.
You'll want to upgrade to an ported/LS6 pump with the heavy spring. Use good oil also. If the engine is out port out the back as pictured.
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10-24-2006, 01:59 PM
#9
Originally Posted by Slo_240sx
I will be doing that very soon, great pic there. How deep is it?
You'll want to upgrade to an ported/LS6 pump with the heavy spring. Use good oil also. If the engine is out port out the back as pictured.
You'll want to upgrade to an ported/LS6 pump with the heavy spring. Use good oil also. If the engine is out port out the back as pictured.
I decided to go ahead and do it, opened up the rear cover's cross over port first, then got the ***** to go caveman on my block. I also smoothed out the sharp edges. I want to know how deep I can go, I only went in about .125.
SInce I did this I have read that Steve D does this (correctly with a CNC machine) so I guess it was a good guess on my part. I'd still like to know how deep he goes.
10-24-2006, 02:08 PM
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The pic Ive seen that someone did with a cnc looked like it was about 1/4" deep. I'll see if I can find it. There was a BIG article on the differences and said this was the biggest difference.
10-24-2006, 02:59 PM
#11
Originally Posted by Slo_240sx
The pic Ive seen that someone did with a cnc looked like it was about 1/4" deep. I'll see if I can find it. There was a BIG article on the differences and said this was the biggest difference.
Yeah, I'm thinking of going a full 1/4". I may strip her down own last time and do it.
I'd love to see the CNC pic. I also remember seeing that article where it said that this was the biggest difference between blocks, and I even posted a thread asking if the problem was here, in the rear oil galley crossover or the pump.
I've taken apart a 98, 99 and 01 ls6 pump and measured everything all dimension were the same. relief valve diameter & length, gerator thickness, inlets and outlets. The only difference that I didnt test/check was the metal type and the spring pressure.
