speed density vs carb

sheilaspony · 07-18-2005, 07:41 PM

need a little help have a 86 gt with speed density.built new motor with gt 40s forged flat tops x 303 camshaft.has anyone used speed density with this combo or am i wasting my time.really dont want to convert to mass air

~The Jester~ · 07-19-2005, 06:42 AM

I vote CARB! Of course I'm old school, and really don't know too terrible much about the finer points of fuel injection.

It's my understanding that the mass air conversion really isn't that big of a deal, and I'm sure some of the "fuelie" guys on here could help you out with it!

But for the record, I vote carb! hehehehe

07-19-2005, 03:08 PM

I'd go with the fuel injection Mass-air conversion. You'll get the most out of your combo with the mass-air. Don't go with the speed density. I'd vote carb over SD. But mass-air is the way to go. Way easier to tune than the carb setup IMO.

Ieatcamaros · 07-19-2005, 07:44 PM

Another vote for the carb!

88workcar · 07-20-2005, 05:49 AM

The SD will work with what you are building. And you all ready have it. A carb intake you can find used, my sugg would be a torquer (spelling) A carb, yea you can "find" a good one, but a real good one will be about $700.00+ ( a "real" good one) Is fuel economy any concern to you? SD. Is cold weather startup going to come into the picture? SD. Emission checks? SD. Will you be racing boys that think that you can not use SD, and because of it you will be slow? SD. I just ran 11.80s on SD. with a weak short block, it lasted a month

. Really the choice is yours, and once it is done and right either one will get the job done.

07-18-2005, 07:41 PM	#1
sheilaspony Registered Member Join Date: May 2005 Posts: 6	speed density vs carb need a little help have a 86 gt with speed density.built new motor with gt 40s forged flat tops x 303 camshaft.has anyone used speed density with this combo or am i wasting my time.really dont want to convert to mass air

07-19-2005, 06:42 AM	#2
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: speed density vs carb I vote CARB! Of course I'm old school, and really don't know too terrible much about the finer points of fuel injection. It's my understanding that the mass air conversion really isn't that big of a deal, and I'm sure some of the "fuelie" guys on here could help you out with it! But for the record, I vote carb! hehehehe __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

07-19-2005, 03:08 PM	#3
Simi Stang Guest Posts: n/a	Re: speed density vs carb I'd go with the fuel injection Mass-air conversion. You'll get the most out of your combo with the mass-air. Don't go with the speed density. I'd vote carb over SD. But mass-air is the way to go. Way easier to tune than the carb setup IMO.

07-19-2005, 07:44 PM	#4
Ieatcamaros Domestic Rice really sucks! Join Date: Apr 2002 Location: KY Posts: 973	Re: speed density vs carb Another vote for the carb! __________________ The sig says it all.

07-20-2005, 05:49 AM	#5
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	Re: speed density vs carb The SD will work with what you are building. And you all ready have it. A carb intake you can find used, my sugg would be a torquer (spelling) A carb, yea you can "find" a good one, but a real good one will be about $700.00+ ( a "real" good one) Is fuel economy any concern to you? SD. Is cold weather startup going to come into the picture? SD. Emission checks? SD. Will you be racing boys that think that you can not use SD, and because of it you will be slow? SD. I just ran 11.80s on SD. with a weak short block, it lasted a month. Really the choice is yours, and once it is done and right either one will get the job done. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

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