tlwesch
Well-Known Member
Hey guys...new to Mopars and curious to what modifications you have made to your 273 engines? What kind of horsepower can you expect to get from it? Is there a way to do dual exhaust?
273 modifications
- Thread starter tlwesch
- Start date
Meep-Meep
дворянин
A 273 is a small bore 318 really, so a good engine overall. There is an intake bolt hole angle difference on some early vs. late but I don't recall the year cutoff. This would make adapting later intakes more difficult, but it's also possible someone has a way around that by now.
I never had a running 273 but have had a 318 or two so I can speak about some really basic cheap mods. Dual exhaust can be put on anything if you pay the muffler shop enough! Assuming you can put a later intake on the 273 I'd look for a 360 TQ setup. Even with the port mismatch it will run well and they are nearly free compared to the Edelbrock. Or you can put on a small square bore 4 BBL, and by small I mean 500 CFM max. A cam change will net the biggest improvement if you don't over cam. So I guess you need to decide how far you want to go. 300 HP shouldn't be too hard to get using bolt on parts.
I never had a running 273 but have had a 318 or two so I can speak about some really basic cheap mods. Dual exhaust can be put on anything if you pay the muffler shop enough! Assuming you can put a later intake on the 273 I'd look for a 360 TQ setup. Even with the port mismatch it will run well and they are nearly free compared to the Edelbrock. Or you can put on a small square bore 4 BBL, and by small I mean 500 CFM max. A cam change will net the biggest improvement if you don't over cam. So I guess you need to decide how far you want to go. 300 HP shouldn't be too hard to get using bolt on parts.
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