MoparMikey
Well-Known Member
Just curious is there anything worthwhile to do to a stock 1969 318 2bbl to improve power some. Not looking for race engine stuff. I realize intake/4 bbl is a no brainer what else?
Intake, 4 barrel, ignition curve, dual exhaust in that order. Cam/headers/heads. Next step. Don't forget rear gear and tire size. That can make a huge difference. Poke 318 in the search box. Probably a couple hundred threads.Should have said about 300hp. Cam heads etc can you provide specifics?
One of these days, I am going to do something with that 318 I have on the engine stand.The biggest cork to air flow is the stock heads. The factory didn't even use them when they put a 4bbl on the '78 and up 318, they used the 360 heads.
This is incorrect as the 318 can and will work with 2.02/1.60 valves. If you make a case on shrouding, you would be correct and only that it has it. To argue the demerits of the valve size and the shrouding is ridiculous.A limiting factor on the 318 is the bore size. You can't get carried away with big valves due to interference issues.
I agree except I’d walk away from a 302 head and go right to a Magnum head if the mod issues didn’t bother anybody for there use. Otherwise, unless racing, the current stock head will do just fine and really well ported. For what it is.The 302 casting or the later Magnum would work. Magnum has valve train issues that can be dealt with or the Engine Quest heads, Indy/Hughes and others, give you the shaft rocker option. Mags used a 1.92 size intake. Highest flowing of the oe heads especially on the exhaust.
Nothing wrong with the 273/318 heads. They can be made to work.This is incorrect as the 318 can and will work with 2.02/1.60 valves. If you make a case on shrouding, you would be correct and only that it has it. To argue the demerits of the valve size and the shrouding is ridiculous.
I agree except I’d walk away from a 302 head and go right to a Magnum head if the mod issues didn’t bother anybody for there use. Otherwise, unless racing, the current stock head will do just fine and really well ported. For what it is.
IF your going to build a powerful 318, it would be 340/360, 2.02 head or an aluminum head. Builders choice.
What valve train issue are you talking about?
Outside of pushing the heads as cast limits, I have found nothing wrong with the Magnums valve train.
Once you start to push there abilities, upgrading the attaching point in the head is what is known. From that point on, it might as well be roller rockers.
You need AMC lifters (that oil through the pushrods. Most hydraulics nowdays do) and hollow pushrods to get the oil to the rockers.Valve train issues being swapping to the stud rockers, different pushrods and lifters. Mags oil through the pushrods like chebby. I stand corrected on the valve size issue.