Triple weber jet questions

I was active here a few years ago when building my I-6... Relationship endings, moving, new job etc all put it on the back burner.... I'm now done and ready to drop in and break it in!

I know there are a few guys running triple weber's and I'm wondering what your jetting and carb settings were? I recall one guy had a nearly identical setup as me. I realize this won't be perfect but I figure it should get me in the ballpark.... Will then dyno it in!

I have a 200 bored .30 over, large log head with bigger valves and some cleanup work. Have a moderate cam from CI, offy intake, 10.5:1 compression and modern ignition. Add on the CI3-1 headers and an Arvinode dual exhaust.... Hope to start it in the next week or two!

name that Weber! (well, those webers).

(and, just 4 me...some pic, I just luv pic!)

Weber 34 ICT's

[image]ict03.jpg [/image]

See your earlier posts.

64falconsix, kevinl1058, 64 200 ranchero et al :mrgreen:

64falconsix":u4oq4f1x said:

Here is the number for the carb arms.. http://www.piercemanifolds.com/product_p/99005.316.htm. i am about 50' above sealevel and currently run a .180 mains in the center and 165 in the outers. .65 idle jets on all 3. The AFR looks good with this jetting. I also idle off the center carb.....i use the comp 260 h cam and headers also. I do recommend a wide band AFR meter tonhelp with tuning and monitoring. I do have to jet up to a 185/190 for the center in the winter here which is upper 30s/lower 40s. Use the progressive setup for a street....... street/strip engine.

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See kevinl1058


"Tri-power tuning"

Primary is jetted at 175, secondaries 155 Jet. Going to bump up my outer secondaries to 185's just to really fatten things up when they kick in. Hope fully when the car gets to its power curve the A/F number wil drop to 12.5 range.

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went to 185 mains for all three. Cruise readings 13.5/ WOT reading 12.5. Car pulls so much nicer. I was just over jetting with the 190/175/190 WOT A/F was dropping to 10.7..

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viewtopic.php?t=64712


For idle, try

viewtopic.php?f=1&t=73580&p=565247#p565247

64 200 ranchero":u4oq4f1x said:

i run .65 in all 3

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64 200 ranchero":u4oq4f1x said:

https://www.facebook.com/photo.php?fbid=957047660995598&set=a.216236488410056.58704.100000711187478&type=3&theater

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See https://www.facebook.com/photo.php?fbid ... =3&theater