Cannot find article concerning tri-power
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Cannot find article concerning tri-power
Via searching on the net, I learned that "Nick Brunt" wrote a book or maybe an article in a magazine called "1967-the year of the tri-power".
The article is about tuning a tri-power set-up, and as have set-up this on my car I need this book / article.
Does anybody know where I can get this book / article - (I have tried Amazon, and searching the internet)
Regards Lars Sørensen
The article is about tuning a tri-power set-up, and as have set-up this on my car I need this book / article.
Does anybody know where I can get this book / article - (I have tried Amazon, and searching the internet)
Regards Lars Sørensen
Heel & Toe
Joined: Jul 2003
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From: San saba TX
Re: Cannot find article concerning tri-power (lsorense)
Though it's not a Chevy, High Performance Pontiac has a 4 sectioned article on tri powers.
http://www.highperformancepontiac.co...1hpp_triresto/
Thats the first one. Maybe there's knowledge to be gained from a Poncho system? I wouldn't see why not... Camaro and Firebird were twins, so Chevy and Pontiac had to share stuff once in a while.
http://www.highperformancepontiac.co...1hpp_triresto/
Thats the first one. Maybe there's knowledge to be gained from a Poncho system? I wouldn't see why not... Camaro and Firebird were twins, so Chevy and Pontiac had to share stuff once in a while.
Melting Slicks
Joined: Apr 2000
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From: San Jose California
Re: Cannot find article concerning tri-power (lsorense)
Lars,
I don't know of the article you are looking for. I recall another one about 20 some years ago where a magazine rebuilt a 427 to run on lower octane gas, upped the cam specs, and rebuilt the tri-power to make 450+ gross horse power. I have often kicked myself for losing that article.
Thought this article from Corvette News might still be some help to you. The only major drawback for me with these Holleys is that they don't have changeable jets in the secondaries, only metering plates. From a driving stand point, I have heard others complain that under full throttle they can hang open a little longer than you may want when you lift your foot off the gas.
Chuck
I don't know of the article you are looking for. I recall another one about 20 some years ago where a magazine rebuilt a 427 to run on lower octane gas, upped the cam specs, and rebuilt the tri-power to make 450+ gross horse power. I have often kicked myself for losing that article.
Thought this article from Corvette News might still be some help to you. The only major drawback for me with these Holleys is that they don't have changeable jets in the secondaries, only metering plates. From a driving stand point, I have heard others complain that under full throttle they can hang open a little longer than you may want when you lift your foot off the gas.
Chuck
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Re: Cannot find article concerning tri-power (Chuck Harmon)
Thanks for the article, this is very helpful.
Do you recall the name of the magazine that had the article 20 years ago ?
Regards
Lars Sorensen
[Modified by lsorense, 2:13 PM 1/22/2004]
[Modified by lsorense, 2:13 PM 1/22/2004]
Do you recall the name of the magazine that had the article 20 years ago ?
Regards
Lars Sorensen
[Modified by lsorense, 2:13 PM 1/22/2004]
[Modified by lsorense, 2:13 PM 1/22/2004]
Safety Car
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From: NorCal
Re: Cannot find article concerning tri-power (lsorense)
Unfortunately the Pontiac stuff will be of limited use, since they used Rochester 2 barrels. These are quite the challenge to tune, and they MUST have tight throttle shafts to work properly. It's usually only the center carb thats worn out, and it's due to the linkage/return spring arrangement. If you don't care about originality, move the ruturn spring from underneath where it pulls against the throttle cable (with the shaft as a fulcrum) to up above so it can pull directly against the cable.
Hans
Hans
Melting Slicks
Joined: Apr 2000
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From: San Jose California
Re: Cannot find article concerning tri-power (lsorense)
Lars,
I can't remember the magazine that the article was in 20 yrs ago. You may also find some good info on MoPar sites. The six packs used on the Chrysler cars were virtually identical to the Corvette Tri-Powers. ford had a similar arrangement, but the Ford units were mechanical secondaries.
Unfortunately, the Ford design won't work with the Corvette 3x2 manifolds. The required metering block between the main body of the carb and the fuel bowl would make the rear carb too long to fit behind the center carb. The front carb would not be a problem.
Chuck
I can't remember the magazine that the article was in 20 yrs ago. You may also find some good info on MoPar sites. The six packs used on the Chrysler cars were virtually identical to the Corvette Tri-Powers. ford had a similar arrangement, but the Ford units were mechanical secondaries.
Unfortunately, the Ford design won't work with the Corvette 3x2 manifolds. The required metering block between the main body of the carb and the fuel bowl would make the rear carb too long to fit behind the center carb. The front carb would not be a problem.
Chuck
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Re: Cannot find article concerning tri-power (Chuck Harmon)
I agree! go to the Mopar sites, the 1967 427 3X2 was admired by Chrysler so much that in 1969 trough 1971 the 440 and 340 recieved the same set-ups. The 2300 Holley dosen't care what engine it is on, performance and modifications that work for one will give simular results on another (probrbly not exact but, very close.) I leaned my tri-power trade on a 440 Chrysler, it works on 435HP Vettes with the same results. The Pontiac, Oldsmobile, and 348 Chevy all used Rochester 2bbl carbs (far different animals from the 2300 Holley set-up on the Vette.) JUST DON"T TELL THOSE MOPAR GUYS YOU,RE A VETTE OWNER AND YOU"LL BE FINE! (if you do, they will take out their inferiority complexes on you!) :iagree:
