In the near future I plan on swapping out 273 for 340. Exhaust will be upgraded eventually, but in the meantime for breakin can I use the factory 273 manifolds on the 340? Foresee any issues?
Thanks
Steve
Thanks
Steve
Depends on the year of the 340; or more precisely, the year of the heads. If they are later heads with the large exhaust port pads, there will be interference.In the near future I plan on swapping out 273 for 340. Exhaust will be upgraded eventually, but in the meantime for breakin can I use the factory 273 manifolds on the 340? Foresee any issues?
Thanks
Steve
Depends on the year of the 340; or more precisely, the year of the heads. If they are later heads with the large exhaust port pads, there will be interference.
1965 MOPAR, 273 Exhaust Maifolds
Then you should be okay! I'm sure you know about the port mismatch, but like you said- it's temporary.Thanks for link. They are 1969 X heads, the manifolds for the 273 are 1967.
Thanks
Lol, I want to, but bylaw has been here once already for a fume "violation"...Then you should be okay! I'm sure you know about the port mismatch, but like you said- it's temporary.
Slap those Hi-Po's on there.
When are you planning the break in? You can do it up here......The only thing you'd piss off here are the bears.Yes, I just wasn't sure if "choking" the exhaust with 273 manifolds would affect the breakin.
Lol, I want to, but bylaw has been here once already for a fume "violation"...
He would be here for a sound one too with no exhaust.
When are you planning the break in? You can do it up here......The only thing you'd piss off here are the bears.
If this stretches into the Spring, maybe (more like hoping) my stand will be available.Thanks Troy! I'm not really sure, I "think" I'm ready. Still got 273 to pull. If I could put the 340 in trunk of cuda and drive up there .
A bear is the last(maybe 2nd last) thing I wanna pi$$ off lol.
Then there's the exhaust "issue" and torque converter...mean game of Mopar dominoes...
On a temporary break-in period, it will work fine as long as your intake is the '66-up version, and you install the reducer bushing in the crank for the small button converter. Keep in mind that with the exhaust port mismatch in size, the gasket is prone to blowout failure. How long it lasts is mostly dependent on the brand and composition of the gasket.