Being I'm going to draw through turbo my 200 I6. I was planning on using a single 4bbl carb, but what about using 3 or 4 1bbl carbs? like holley 1940's? seems like it would look cool but how would tunibility be? if it will be too much of a hassle with the turbo, I'll just put on the Holley 600 like I planned. thanks
multi carb turbo?
- Thread starter matt1967
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that 600 will prob bee to much carb for a 200.carb of choice seems to be a 350 holley for a 200. have you looked at the other setups on here?
3.8 Buicks are a lot more efficient and have better designed intakes and heads than the 200. Not to mention they are a half-liter bigger.
I forget, are you building this for the street or just draggin'? You would use different carbs for each. I'd like to know the driveability of the 600, I bet it sucks until WOT.
Notice that Will & Kelly's Turbofalcon used a Holley 350 to get deep in the 11's and draw your conclusions from there.
I forget, are you building this for the street or just draggin'? You would use different carbs for each. I'd like to know the driveability of the 600, I bet it sucks until WOT.
Notice that Will & Kelly's Turbofalcon used a Holley 350 to get deep in the 11's and draw your conclusions from there.
also note with a draw through you will not be able to intercool....both the fast turbo cars on here (lincs and kellys) are both intercooled. you will also need a turbo that is built for a drawthrough. I think the holley 2bbl is the best way to go. get the carb on the motor and dialed in NA then boost it.
multicarb just seems like it would be too complicated for me. I have a fun enough time trying to get 1 carb to run right let alont 2 or 3... just seems a little unneccesary, but if its what you want go for it dont let me discourage you from it.
the carb mods only take an hour to do....swap th efloat and remove the choke. then you plug like two holes....thats it. you can buy a bonnet so that part is easy.....the hole is already there on the pump to reference but as me and tommy might be finding out the stock pump may not have enough umph for boost.
granted if you already have a GN draw through turbo then I would go that route. have you thought of a 500cfm 2bbl? or a 390 4bbl?
granted if you already have a GN draw through turbo then I would go that route. have you thought of a 500cfm 2bbl? or a 390 4bbl?
I was just thinking about a 500 CFM 2bbl. it would help me out a lot as I'm making a custom carb plenum out of 2" exhaust pipe, with a 4bbl base being about 8" or so, I would have to make a large funnel to make it work, with a smaller 2bbl base, I could do it with some 3" and reducers to the 2"turbo_fairlane_200":1mie2yvh said:
Since even a measly 1bbl carb can provide enough air and fuel for a mild turbo application, multiple carbs is just asking for tuning trouble. It would only be the "bling" factor.
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matt1967":9ft28rut said:
A freakin' nightmare is how it would be.
matt1967":9ft28rut said:
They weren't 750's. The secondaries don't open that far. AFAICR, they were only 550. They could be modded to open farther, but you would need different secondary needles.
I have one out in the garage right now....
wallaka":9ft28rut said:
You can intercool the mixture after the turbo in a draw through, but the "explosion" potential goes up VERY high. I don't like that idea.
MustangSix":9ft28rut said:
Blow through = use a small carb
Draw through = use a big carb.
Turbos hate to "suck" and don't like ANYTHING before the turbo inlet.
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There's a little bit longer path from the carb to each cylinder so it does take a ~little~ bit more to get started.
so basicly, just make shure I should have a good battery with a good CCA rating and a good reserve cappacity and I should be fine right?Linc's 200":37kivahm said:
also I got thinking about how draw thru's supposivly don't run good below 50*. and the buicks were water heated carb plenums from the factory, could I take some black iron or galvanized water pipe, drill according size holes in my custom carb plenum and slide the pipe in and weld it in, then get 5/8" water hose barbs with the correct size for the pipe and run the heater hose to it to help?
do you plan on driving in the winter months?
my blowthrough has no carb heater or choke and I managed to get it started in 10 degree weather. it was a pain though since my pump cover is warped and it was draining my fuel bowl overnight....lead to LOTS of cranking to reprime the carb every morning.
my blowthrough has no carb heater or choke and I managed to get it started in 10 degree weather. it was a pain though since my pump cover is warped and it was draining my fuel bowl overnight....lead to LOTS of cranking to reprime the carb every morning.
