05-31-2008, 07:51 PM
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#1 |
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Registered User
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How hard is it to switch to a carb
I have a 89 coupe with a 347 12.1 comp 610lift cam haveing problems tuneing the efi. I was just seeing if anyone has switched from efi to carb? Do I have to sump the tank & run its's on fuel system? What does it all detail in the job. Any info would be great.
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05-31-2008, 08:04 PM
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#2 |
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Coming to a 17" rim near you
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i think the fuel system on my old 85 fox had a reg tank, mechanical fuel pump.
i dont think the transition is very hard to go to carb(carb and a lower intake is the most major change), i wouldnt want to make the reverse change tho. i would tell u to call a shop, but honestly i dont know which shop around San antonio is the best at fiddling with carbs(kind of a losing art) |
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05-31-2008, 08:46 PM
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#3 | |
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Leaving July 3rd for the Army
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Like Cody said, you would need to change your intake manifold and fuel pump. |
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05-31-2008, 11:59 PM
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#4 |
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Registered User
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The car is a drag car only. Just having a bad time with this efi I ran efi for 10 years with a mild 306 all motor running 12.00's all day long it was very easy to tune when I went up to 347 with 12.1 compression & a 610 lift cam the car run's like $hit. Last nite it would only go 12.90's breaking up at 330 feet.
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06-01-2008, 02:35 AM
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#7 |
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You will never get this
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Ya if its straight drag, go carb'd. Cant help you on the swap. Ive always wonder how, and visa versa.
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06-01-2008, 12:12 PM
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#9 | |
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Registered User
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Quote:
__________________
The artist formerly known as 210banginstang |
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06-01-2008, 12:20 PM
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#10 |
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looks mean, workin' on the fast
 
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in a high hp set up, you'd probably be better off having the tank sumped, you're gonna have to get a pump, and fuel line, i would also run an msd distributor and 6a box and get rid of your whole wiring mess under the hood... then just carb and manifold... as far as the tank, there's also a "carb pick up" you can buy... not sure whats involved in that though.
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t-5 swap, billit quadrant, upr firewall adjuster, steeda tri-ax, custom jb tool and fab one off subframe connectors, 8.8 w/posi and 4.10's with 5 lug axles, tubular upper control arms, southside lowers, and pbr twin piston front calipers with "snowflake" wheels |
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06-01-2008, 03:27 PM
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#11 |
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Wanna Run?
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I would get a fuel cell from summit, 5gal or so 1/2 fuel line, buy MY aromotive fuel pump reg and filter, also pick up MY msd dizy and carb 750 dblpump and wouldn't run a 6a, at a min run a 6al, purchase a vic jr intake.
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Team Hype Motorsports Project 408SBF 9.50 Pumpgas It's not all HYPE
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06-03-2008, 09:42 AM
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#13 |
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Brewmeister
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I agree, for a drag car, a vic jr. intake is the way to go.
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retired 1990 Tx dps :T-5, stock bottom 302, shorty headers,o-r x-pipe, ported explorer true gt 40 heads, matching intake. E-cam 1.7's, pro-m 77, 24lb injectors, 3.90 gears. good for mid 12's on stickies. |
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06-04-2008, 10:35 AM
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#16 |
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LSS Sponsor
 
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Its not too bad to convert it .
Here is my fuel system on my coupe : Holley billet 175 pump Holley regulator RCI fuel cell (I think its a 12 gallon) -8 braided fuel supply line Mighty Demon 850 Ported Pro Products Hurricane intake Fuel system on my 94 Gt Holley blue pump sumped stock tank -8 supply push lock line holley regulator ported vic jr intake 750 speed demon carb |
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06-04-2008, 04:27 PM
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#17 | |
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Coming to a 17" rim near you
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