gta324

Should I change to the As&M semi-runners instead of LTR, what do you think? or will I loose to much torque at low RPM's?

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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)

Jed

I think you should switch IF you have a good set of heads. If you have stock untouched vette heads then don't switch. But with that cam, and a decent set of heads, the semi-siamesed runners should work nicely.

You may notice a slight decrease in torque like I did when I switched, but this is minimal. I can still light up the tires with ease. Switching from ASM's LTR's to their semi-siamesed LTR's extended my powerband by about 800-900 rpm.

Jed
89 Formula 350

IrocStan

Where can I find the AS&M runners, and the edelbrock base? Where can I find the best prices?
thanks



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87 IROC 350
13.94@103mph
Stock cam and chip

Jed

You can visit the AS&M website at http://www.azspeed-marine.com/

Sometimes they don't advertise their semi-siamesed runners and you have to call and ask.

The Edelbrock TPI base can be purchased from pretty much any major mail order speed shop like Summit, Jegs, PAW, etc.

Mkos1980

Hey GTA if you are selling your runners,I'll buy them

Kenn

ASM semi-siamesed runners is a good idea for enhancing upper rpm power without completely changing the intake set up- I like it- but I think that most Aftermarket runners can be made semi siamesed by cutting out a portion of the runners near the plenum flange- for $475 what they're charging????