273 cyl head port sizes

[4spdragtop]

I flipped thru both our 67 and 69 service manuals and cant find sizes for the 273 cyl head intake ports. Its for Dads 67 273.
If you have exhaust port sizes too that would be great, but for now looking for stock.
2bbl, 4bbl and Commando IF there is a difference between the 3.

Thanks
Steve

 

[toolmanmike]

Steve, I don't believe I have ever seen specs on the port size. The ports are the same between 2 and 4 barrel. The 4 barrel and Charger/Commando engines are one and the same. I'll bet someone here has a set of heads handy and can give you a measurement. tmm

 

[69 Cuda 440]

#2658920 {1966 and 1967 } '273' Castings

Intake Port.......... 1.05" Wide x 2.07" Height
Volume............... 124 CC's

Exhaust Port....... 1.14" Wide x 1.59" Height
Volume.............. 61 CC's
---------------------------------------------------------

#2531984 'X' {1968 thru 1970} '340' Castings

Intake Port.......... 1.16" Wide x 2.27" Height
Volume............... 160 CC's

Exhaust Port........ 1.25" Wide x 1.75" Height
Volume............... 70 CC's

 

[DDodger]

casting no is what you need to start with

 

[4spdragtop]

Thanks guys, weird..I kinda expected the factory manual to have these specs. I cant get to the casting #'s as Dads car is in storage about 5 hours away.
The reason I ask is I have a couple of aftermarket 4bbl intakes.

 

[krazykuda]

All 273/318 heads have the same port size....

 

[4spdragtop]

Thanks guys, anyone know about 340's?

 

[mvh]

340s have larger ports. So do 360s.

 

[4spdragtop]

340s have larger ports. So do 360s.

Have you got dimensions?

 

[69 Cuda 440]

#2658920 {1966 and 1967 } '273' Castings

Intake Port.......... 1.05" Wide x 2.07" Height
Volume............... 124 CC's

Exhaust Port....... 1.14" Wide x 1.59" Height
Volume.............. 61 CC's
---------------------------------------------------------

#2843675 {1968 and 1969} '273' Castings
#2843675 {1968 thru 1974} '318' Castings

Intake Port......... 1.05" Wide x 2.07" Height
Volume.............. 125 CC's

Exhaust Port....... 1.14" Wide x 1.59" Height
Volume.............. 61 CC's
--------------------------------------------------------

#2531984 'X' {1968 thru 1970} '340' Castings

Intake Port.......... 1.16" Wide x 2.27" Height
Volume............... 160 CC's

Exhaust Port........ 1.25" Wide x 1.75" Height
Volume............... 70 CC's

Here You Go >

 

[4spdragtop]

Here You Go >

Thanks! Where did you find that info?? I looked thru Factory service manual with no luck. I have a couple Mopar "how-to" books, but they arent with me.

 

[69 Cuda 440]

Thanks! Where did you find that info?? I looked thru Factory service manual with no luck. I have a couple Mopar "how-to" books, but they arent with me.

4-Speed-Rag-Top,

You won't find these specifications in any book.