I keep hearing that SLP has 2 1/4 inch collectors on the 1 3/4 inch primary tube headers. Does that mean SLP's y-pipe is dual 2 1/4 inch also? I thought Edelbrock uses 2 1/2 inch collectors into dual 2 1/2 pipes. If so then even with 1 1/2 inch primaries on every other primary tube Edelbrock headers have a certain advantage over SLP. Very interesting!

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84 Camaro ZZ4 with HOT cam. 1.88 60' (12.98 @ 105MPH E.T.)
Recently Ported Heads, Installed Larger Race-Flo Valves and RPM Air Gap Intake (No new times)
Other Mods: You name it and I have probably changed it.

2001 Dodge Ram Quad Cab 5.9L 4*2

The Bowtie
ASE Certified Auto Tech
LIVE AND DIE BY THE ALMIGHTY BOWTIE!

Well, I measured it for when I was changing the donut collector gaskets. 2 1/2 inch collector pipes each on the TES that lead into a 3 incher where the cat slips on... Obviously I'm talking about a single cat setup, I don't know jack about any dual cat setups...

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray

TTT


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84 Camaro ZZ4 with HOT cam. 1.88 60' (12.98 @ 105MPH E.T.)
Recently Ported Heads, Installed Larger Race-Flo Valves and RPM Air Gap Intake (No new times)
Other Mods: You name it and I have probably changed it.

2001 Dodge Ram Quad Cab 5.9L 4*2

The Bowtie
ASE Certified Auto Tech
LIVE AND DIE BY THE ALMIGHTY BOWTIE!