SLP Runners
04-04-2005, 06:36 PM
#1
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Car: 1987 IROC-Z
Engine: 350 TPI
Transmission: 700R4
SLP Runners
Yes, I did a search. I got mine a little while ago, and just measured the diameter of the hole. Most guys in the search said theirs turned out to be about 1.4" which is stock. Mine are about 1 5/8" which is about 1.62 or so. Why are mine a larger diameter? I'm not complaining by any means don't get me wrong...I'm just curious.
04-04-2005, 07:55 PM
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Car: Tree Huggers
Engine: Do Not
Transmission: Appreciate Me.
Were they used? Newer casting maybe? Different measured areas? That's a vague sort of question without putting it all into context.
Allen
04-05-2005, 10:14 AM
#6
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Originally posted by poncho@home
May I ask what you used to open them up to 1.7"? How do you port the center area?
May I ask what you used to open them up to 1.7"? How do you port the center area?
Just cut them open then weld them back up. I have done some sets and Allen did his.
Link to Allen's set https://www.thirdgen.org/techbb2/sho...hreadid=281400
And a link to my first set https://www.thirdgen.org/techbb2/sho...threadid=46659
Jerry
Last edited by JERRYWHO; 04-05-2005 at 10:22 AM.
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04-05-2005, 12:56 PM
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Car: 2004 BMW 330Cic
Engine: 3.0
Transmission: 6 speed
Originally posted by Jim85IROC
That's not exactly a "DIY" project for those of us not equipped to weld aluminum.
That's not exactly a "DIY" project for those of us not equipped to weld aluminum.
04-05-2005, 08:11 PM
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Car: 85 87 87 91 92
Engine: 305 TPI 350 TPI 350 Carb
Transmission: B/W T-5 and 700R4
All the SLP runners are 1 5/8 since that is the stock size of our plenum, runners and base. Even Edelbrocks high flow TPI base part# (I think) 3860 is 1 5/8. I know this because I bought one compared it to my old one and they were exactly the same size. The SLP runners just have no center section so you can stuff a little more air in at the begining. The bottom runner I only ran a ball hone thru to clean up the casting a little the top is fully ported I am still polishing as we speak.
04-05-2005, 10:35 PM
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Car: 85 87 87 91 92
Engine: 305 TPI 350 TPI 350 Carb
Transmission: B/W T-5 and 700R4
I called around to some of the local machine shop "Supply" companies. this is a worn out one but it started out as a 3 inch ball hone and after craming it down the runners a few times the bristles shaped so it wasn't that big any more then as the stones wear down it gets even smaller but still works well.
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