4 bbl

[BackRoadsR/T]

my friend was telling me theres a 4 bbl intake manifold for R/Ts they make but i also heard 4bbl is carb motors only. would a 4 bbl fit on an 01 R/T with a new throttle body or will it not work and should i just get the Mopar M1?

[bad360rt]

They make both a carb'd and EFI version. There's also a 2bbl, they're both called the M1. Both will work with the stock throttle body, the 4bbl just uses an adapter. Altho upgrading the tb is a good way to go when you're putting an M1 on. 2bbl or 4bbl depends on what your plans are for the truck.

[uwntsumrtII]

along with what dave said. the 4bbl M1 is for highly modded trucks. the 2bbl M1 will take you a long way with mods.

[BackRoadsR/T]

does anyone have a pick of either?

[bad360rt]

Here is my old 4bbl:

http://img.photobucket.com/albums/v730/bad360rt/DSC01717.jpg

[uwntsumrtII]

does anyone have a pick of either?

it realy depends on your overall plans for the truck.

[emwhiteR/T]

Here is a 2bbl fresh from the powder coater.
http://i13.photobucket.com/albums/a262/emwhite/Dakota%20RT/DSCF0667.jpg

[BackRoadsR/T]

Here is my old 4bbl:

http://img.photobucket.com/albums/v730/bad360rt/DSC01717.jpg

isnt that a 2bbl?

[TurboBlew]

isnt that a 2bbl?

thats s 4bbl with a 2bbl adapter.
http://img.photobucket.com/albums/v486/Frankfriendly/DAKOTAPICS/P3040329.jpg

http://img.photobucket.com/albums/v486/Frankfriendly/DAKOTAPICS/P2220326.jpg

[TurboBlew]

does anyone have a pick of either?

2bbl will work fine upto around 400hp. I forget what the cfm rating is on it before it becomes a choke point.

[Five9Dak]

2bbl will work fine upto around 400hp. I forget what the cfm rating is on it before it becomes a choke point.

As long as your heads flow less than 230cfm, you should use a 2bbl to promote low rpm velocity.

[BackRoadsR/T]

i think im gonna run a cam and full exhaust so which would be better a 2 or 4?

[TurboBlew]

As long as your heads flow less than 230cfm, you should use a 2bbl to promote low rpm velocity.

Pretty sure the stock magnum heads flow very close to that number at .500 lift.

[uwntsumrtII]

i think im gonna run a cam and full exhaust so which would be better a 2 or 4?

i'd say a 2bbl

[My99R/T]

I haven't found a 4 bbl-EFI intake that had the thermastat housing located far enough to the passenger side so I could retain the stock A/C compressor mounting point.

[BTLFED R/T]

I haven't found a 4 bbl-EFI intake that had the thermastat housing located far enough to the passenger side so I could retain the stock A/C compressor mounting point.

I believe people are modifying the acc. bracket for it to fit. I haven't done it so I don't know where to say to cut it. I'm sure someone who has will chime in.

[bad360rt]

I haven't found a 4 bbl-EFI intake that had the thermastat housing located far enough to the passenger side so I could retain the stock A/C compressor mounting point.

I had the old style 4bbl and all I had to do was trim the corner of the a/c bracket, piece of cake. :biggthumpup:

[Five9Dak]

Pretty sure the stock magnum heads flow very close to that number at .500 lift.

Maybe out of box R/T's The stock heads only flow about 190cfm on most benches. There is no way an m1 2bbl is restricting a stock longblock.