Marine 273 build
I'd look for a set of 302 heads. They were used in the 80's on 318's.
Junkyard hint: Dodge probably built a lot of vans in that era with those heads. Also the rear wheel drive Chrysler and Dodge cars. They have the more efficient swirl heart-shaped combustion chambers as shown above. Someone here will know the model years they were used (85-89?)
A few years back, I came across THIN head gaskets at the Mopar Nats and bought a set. Don't quote me but I think they were 0.028" compressed. Sounds like you are trying to get every little bit of compression. Check with Mancini Racing?
Now it's coming together,,
TR Benj,
Sounds like a 1968 273, with Flat Top Pistons {w/Notches} and 'Open-Chamber
#675 Cylinder Heads.
As per your 'post', the Pistons are sitting at {-.012"} 'below' the Deck.
If you want to stay with the current 'Pistons', you will undoubtedly need the
#302 Cylinder Heads to get the compression up for more power.
That's the only thing that will work.
The 'more' Compression, the 'better' that 340 Camshaft will work...
Below {#4323302} Cylinder Head
I'd look for a set of 302 heads. They were used in the 80's on 318's.
Junkyard hint: Dodge probably built a lot of vans in that era with those heads. Also the rear wheel drive Chrysler and Dodge cars. They have the more efficient swirl heart-shaped combustion chambers as shown above. Someone here will know the model years they were used (85-89?)
A few years back, I came across THIN head gaskets at the Mopar Nats and bought a set. Don't quote me but I think they were 0.028" compressed. Sounds like you are trying to get every little bit of compression. Check with Mancini Racing?
