Tri-carb
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From: Beckley WV
Tri-carb
I ordered my 3 carbs for my 3 deuce setup earlier this week. 
Can't wait to get them, powder coat them to match the car, slap them on an Edelbrock Intake, plumb up some nice solid chrome fuel lines and log and...........wait until my garage is built so I can start my Vette teardown.
Not trying to get the cart ahead of the horse since I know there's a lot more to be done than just buying my carbs, but I had a chance to get a nice deal on them and I have an uncle in law with the powder coating equip. and the current willingness to help...so I figured I'd be that much further along in the game.
Can't wait!!!!!
Can't wait to get them, powder coat them to match the car, slap them on an Edelbrock Intake, plumb up some nice solid chrome fuel lines and log and...........wait until my garage is built so I can start my Vette teardown. Not trying to get the cart ahead of the horse since I know there's a lot more to be done than just buying my carbs, but I had a chance to get a nice deal on them and I have an uncle in law with the powder coating equip. and the current willingness to help...so I figured I'd be that much further along in the game.
Can't wait!!!!!
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From: Millington Illinois
St. Jude Donor '08-'09
Here is my Small block setup. All custom, one off, 3-378 CFM Large Base Rochester carbs (1970 Chevy 350 - 400 2 BBls) Center carb is a Marine 350 carb with side inlet, Electic choke. End carbs got 1966 pontiac Tripower tops and bases with no idle circuits with 150 shot of nitrous on a 500 HP 383. LOVE TRIPOWER!!!
Last edited by 63mako; Nov 9, 2007 at 04:38 PM.
Drifting
Joined: Apr 2007
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From: Springfield Illinois
Here is my Small block setup. All custom, one off, 3-378 CFM Large Base Rochester carbs (1970 Chevy 350 - 400 2 BBls) Center carb is a Marine 350 carb with side inlet, Electic choke. End carbs got 1966 pontiac Tripower tops and bases with no idle circuits with 150 shot of nitrous on a 500 HP 383. LOVE TRIPOWER!!!
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From: Millington Illinois
St. Jude Donor '08-'09
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From: Millington Illinois
St. Jude Donor '08-'09
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From: Beckley WV
Hey 63Mako, did you custom bend those carburetor fuel supply lines or did you buy them somewhere already bent for the Tri-Carb application? I've seen another Tri setup with practically the same bent chrome fuel lines you are showing, but haven't been able to locate them anywhere for sale.
I'd also like to talk to you sometime more thoroughly about the custom NOS plates you have on your 383. I am also planning to stick a 383 in my '69 and have contemplated a NOS application somewhere downt he road.
I'd also like to talk to you sometime more thoroughly about the custom NOS plates you have on your 383. I am also planning to stick a 383 in my '69 and have contemplated a NOS application somewhere downt he road.
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Race Director
Joined: May 2005
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From: Millington Illinois
St. Jude Donor '08-'09
Hey 63Mako, did you custom bend those carburetor fuel supply lines or did you buy them somewhere already bent for the Tri-Carb application? I've seen another Tri setup with practically the same bent chrome fuel lines you are showing, but haven't been able to locate them anywhere for sale.
I'd also like to talk to you sometime more thoroughly about the custom NOS plates you have on your 383. I am also planning to stick a 383 in my '69 and have contemplated a NOS application somewhere downt he road.
I'd also like to talk to you sometime more thoroughly about the custom NOS plates you have on your 383. I am also planning to stick a 383 in my '69 and have contemplated a NOS application somewhere downt he road.
Last edited by 63mako; Nov 12, 2007 at 11:16 AM.
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From: Beckley WV
Yeah, I'll definitely check out vintagespeed. I really appreciate the help. My setup is using the small bore carbs. It's my first venture into the TriCarb world so I'm going to toy with these for a while. Did you find a new Offy or did you have to go with a used one for those large bore carbs? Are they pretty easy to find?
Thanks again.
Thanks again.
Racer
Joined: Apr 2007
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From: Dane Wisconsin
not that 10,000rpm is not great stuff but NOS makes a tri-power kit i just ordered mine. i have holly carbs. here is the number from summit. this is just the plates.
NOS-12983NOS 3-2BBL HOLLEY CHEATER
NOS-12983NOS 3-2BBL HOLLEY CHEATER
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From: Millington Illinois
St. Jude Donor '08-'09
Yeah, I'll definitely check out vintagespeed. I really appreciate the help. My setup is using the small bore carbs. It's my first venture into the TriCarb world so I'm going to toy with these for a while. Did you find a new Offy or did you have to go with a used one for those large bore carbs? Are they pretty easy to find?
Thanks again.
Thanks again.
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From: Beckley WV
I can't wait!!!
I looked up the fuel lines, etc on Vintage Speed. They've got some nice stuff there. Thanks for the info.
........Also thanks for the other NOS information. I'll definitely check into every angle or possibility I come across including the 10,000 RPM and the NOS stuff.
I looked up the fuel lines, etc on Vintage Speed. They've got some nice stuff there. Thanks for the info.
........Also thanks for the other NOS information. I'll definitely check into every angle or possibility I come across including the 10,000 RPM and the NOS stuff.
Pro
Joined: Aug 2000
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From: plymouth mass
Tri-carb setups are cool. I have had a couple over the years, mostly on GM cars. It has always been my intention to install a tri-carb setup on my 73. So far yours looks great. Keep us up to date on your progress.
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From: Beckley WV
63Mako or anyone else who wants to chime in with their thoughts.....if I eventually went the way of adding the NOS or 10,000 RPM plates to my 3 deuce setup, what steps do you recommend that I take in building my engine... anticipating that one day Nitrous will be added. Do I need to take any additional steps in beefing components up to prevent my 383 from going up in smoke after a short Nitrous life?? Is it any benefit one way or the other of running a high or low CR? I've heard people say that low CR engines are more suited to Supercharger applications. What about cam / lifter needs? This car will be a street cruiser with some occasionally violent trips between stop lights and maybe an occasional trip to the strip...but that will be a rarity.
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From: Millington Illinois
St. Jude Donor '08-'09
63Mako or anyone else who wants to chime in with their thoughts.....if I eventually went the way of adding the NOS or 10,000 RPM plates to my 3 deuce setup, what steps do you recommend that I take in building my engine... anticipating that one day Nitrous will be added. Do I need to take any additional steps in beefing components up to prevent my 383 from going up in smoke after a short Nitrous life?? Is it any benefit one way or the other of running a high or low CR? I've heard people say that low CR engines are more suited to Supercharger applications. What about cam / lifter needs? This car will be a street cruiser with some occasionally violent trips between stop lights and maybe an occasional trip to the strip...but that will be a rarity.
Racer
Joined: Apr 2007
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From: Dane Wisconsin
Forged crank, forged pistons, I used Callies Compstar H Beam 4340 forged rods with Carr rod bolts. 4 bolt main. My motto is overbuild the bottom end going in because once you have more power it is never enough. Build the motor with compression matched to the cam selection for N/A use. A little wider LSA is nitrous friendly like 112 instead of 110. Low compression not necessary for nitrous.
spare no $$ on the bottom end but i say that no matter the build. cheaper to spend the money once then to vent a block weather it has nitrous or not.
Drifting
Joined: Apr 2007
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From: Springfield Illinois
Check with vintagespeed.com for fuel lines. I bought a set from him and refabricated them to fit my application. He has a lot of tripower stuff. Got my front and rear base plates from him too. Don't get them anywhere else. They are CNC aluminum with brass lapped in throttle plates. They seal air tight which is critical for good idle quality. If you are going with the small base rochesters 278 CFM carbs the actual comparable 4 bbl CFM they will pull is 600. Didn't work for me. These are the large base carbs, 378 CFM actual comparable 4 BBL CFM rating 816
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From: Beckley WV
Thanks guys. I appreciate the input. I think this is the way I'll go then. No more often than I think I'll romp on it really hard, I think nitrous should be as much extra kick as I'll need. I had been waffling between using nitrous or supercharging. Then again...like you guys usually insinuate, power is addicting. The more you achieve, the more you want! Right now, I'd just be happy as a clam to just have a '69 that looks good and runs great. Maybe one day I'll want to make it pure evil but right now I just need to get it tore apart and get started before the field mice carry it off!
mouse
mouse
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From: Millington Illinois
St. Jude Donor '08-'09
The 20 MPG was the 63 with a built 327, ST-19 and a 3.55 gear. Actual 20.6 from Millington to Detroit and back. Would need a large bore intake with an adapter for the center carb. I would just go with the large base all the way through. You are running on a stock size 1970 350- 400 2 bbl at cruise. You can set up where you want the secondaries to kick in and adjust linkage to open all 3 fully at WOT. Easy to dial in if your jetting is right. It is a pain to design and build but it was worth it to me.