I want to get there runners but which ones should I get, Large tubes or semi-siamese runners?? Anyone out there tried both? which ones are better for a daily driver? Thanks for the help!

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Convertible, L98, Edelbrock intake, runners & TES, SLP cam, Thin Head gaskets, March underdrive pulleys, Fastchips custom chip, Accel 300+ ignition, Relocated MAT sensor, TPIS airfoil & AFPR, K&N airfilters W/ chopped airboxs, Dynomax high flo cat, Flowmaster exhaust, MAC subframe connectors, B&M shift kit & XMSN cooler and NOS!!

 

I've tried both and Jed Pisapia has tried both.

Depends on the cam/head combo that you are running. What are the specs on your 'SLP cam'? I ran 12.58@107.9 with the semi-siamesed version of the runners. I like the semi-s runners because if you port out the plenum to match the runners you will see a nice upper RPM gain.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.587 @ 107.97mph (1.710 60ftr) on the long runner setup.
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels. Stock Wheels. No Weight Reduction.
Gunning for NA 11's with the MiniRam II and Hooker LT Headers.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

I have the tube runners and my car has good power at low rpm's and it pulls strong to about 5500 rpm, but I have some other mods too......

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GTA -89:Free flow muffler,dual 3" HF cats, Edelbrock headers, Vette heads, 1.52 RR 7/16, ZZ-9 cam, Big Mouth, AS&M LTB, ported plenum, 52 TB, MSD 6AL, TPIS level V prom, Mod .MAF, Superior shift-kit and some minor mods. and more to come!
http://www.itv.se/tacs/members_cars/m279/m279.html (Swedish Trans Am Club)

 

TRAXION, Ive got the small SLP cam from Summit 206 in. and 212 ex. with like 480 487 lift. I plan on getting Trick flows new 23 deg. heads and a TPIS ZZ9 cam with 1.6 rockers by winter. And I also wanted to get some better runners than my Edelbrock ones, thus the question. So what ya think?

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Convertible, L98, Edelbrock intake, runners & TES, SLP cam, Thin Head gaskets, March underdrive pulleys, Fastchips custom chip, Accel 300+ ignition, Relocated MAT sensor, TPIS airfoil & AFPR, K&N airfilters W/ chopped airboxs, Dynomax high flo cat, Flowmaster exhaust, MAC subframe connectors, B&M shift kit & XMSN cooler and NOS!!

[This message has been edited by Randy92Z (edited September 22, 2000).]

 

I would get the LPE 219 cam over that ZZ9 cam.

 

Randy, what are you running as far as cylinder heads go? If you have stock heads they might limit the semi-siamesed runners. I think Tim tried it, he would know. Oh, TF heads, hello! Get the semi-siamesed then.

The large tubes provided tons of bottom end torque but I felt that my upper rpm capabilities were lacking. With the semi-siamesed runners I noticed a minimal loss of low-end torque but the engine pulls to 6000 rpm no problem now, and it'd probably go higher but I'm not gonna push my luck - I'm running a stock shortblock. Cam specs are 216/228 @.050 .484/.512 112ls. Edelbrock heads, intake base, headers...if I keep going I'll waste a lot of space.

 

Hey guys I got a 89 stock 350 with a full exhaust and just got the Edelbrock base and was going to order the AS&M runners will i notice a differance with the new manifold and runners?

 

Of course you'll notice a difference!

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

Jed pretty much answered the question for me. If you got aftermarket heads/cam then go for the semi-siamesed LTRs.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.587 @ 107.97mph (1.710 60ftr) on the long runner setup.
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels. Stock Wheels. No Weight Reduction.
Gunning for NA 11's with the MiniRam II and Hooker LT Headers.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Mkos, you'll definitely notice a difference. I felt a difference with just the AS&M runners and a ported plenum on the stock base.