I bought this marine motor with the understanding it was a Dodge 270 by the PO. I have not run numbers but the dippled VC cought my attention, was told that it didn't always mean there were adjustable rockers underneath, in fact it would be rare. There has been some talk on here about some 315 325 having the adjustables but not the 270? Did they make a 241 270 with AR's? I understand the need for AR in a solid lifter cam, Chevy's, Fords, ect. BUT why in this motor? Does it have a solid lifter cam? Not ready to tear it down yet or I would have these answers!
My understanding is that all chrysler marine engines had solid lifters and adjustable rockers. So far all the hemi marine engines I have come accross have been that way.
Rich, do you have an answer to these questions? "Did they make a 241 270 with AR's? I understand the need for AR in a solid lifter cam, Chevy's, Fords, ect. BUT why in this motor? Does it have a solid lifter cam?" cheap thrills, posted this before I seen your post, thanks for info also!
My answer would be "Yes they did make Dodge engines 270 and possibly 315 and others with adjustable rockers". That is what you have. I'm going to guess it has a solid cam, but you should be able to see if you can push the push rod down against the tappet, in the manner of a hydraulic or not.
The Marine 270, which is a M44S, has a solid lifter cam with adjustable rockers. These motors were also built with both left and right rotation.
^^^Did they have dimpled no name rocker covers on the M44S? I have only ever seen these on D500/D501 engines....
I have seen many dimpled-no name covers, but the actual adjustable rockers are very uncommon. Nice score Lon! .
Brigrat, Cool beans! Good for you, guard them carefully. I had a set of Adju. Rockers stolen from one of D500s during a "rebuild" years ago. I also got used pistons and an engine that ran ****ty....fun! Of course I didn't know the original rockers were gone until I pulled one of the valve covers; by then the scoundrel was long gone. The guy worked out of Northern Fla about 10 years ago. It seems very very likely you have a solid cam, why have two ways of compensating for lash? (hydraulic tappets and adju. rockers). If you plan on rebuilding the 270, let me put in a plea for using aftermarket Mopar SB roller hydraulic lifers, this will allow you to take advantage of very modern cam profiles. There is a really useful and informative Red Ram Hemi build-up on the Webrodder forum. I give it 5 stars. A whole section describes adapting the roller lifters. Congrats on a very interesting little Dodge Hemi, as Tex Smith, hisownself said... "the jewels in the crown" of Mopar Hemis. Who are we to argue with Tex Smith? charlie aka trakrodstr
Like the Chryslers, Dodge Industrials had dimpled covers. I have yet to see a Dodge Ind. with adjustable rockers. Although the Dodges are nice motors, you are pretty limited as to what you can do with them. I guess Tex is en***led to his own opinion.
Here is my 241 Red Ram with adjustable lifters. The engine was complete when I got and was suprised it had A. Ls...I had Gary at Rocker Arm Specialty reverse the adjusters so I could run the embossed Red Ram Valve Covers.. Duane..
Limitations exist in the mind of the afflicted. Hummm... TR Waters or Tex Smith....gee I can't decide...whose contributions and accomplishments are most noteworthy?
Duane, I have compared your pic with my pic and am not making out the diff. Can you describe in layman terms how they pulled that off? Thanks "Although the Dodges are nice motors, you are pretty limited as to what you can do with them. TR, as long as you can blow em that's all I care about!
There's 315 & 241 builds @ webrodder. Keep in mind the the connector bar on the LA roller lifters have to be shortened & rewelded in the Dodges.
great find, my book only has one reference for the 270, its for a super red ram and the engine code for it is d553-1001, it says it was made in 1955 and had 183 h.p. for the 2bbl app. or 193 h.p. for the 4 bbl. app. not sure if it applies to the marine motor, but im ***uming the "super" on super red ram maybe meant it had a hotter solid lift camshaft from the factory.
Added bonus! With the motor were boxes & boxes of parts and records, found a Maintenance Manual with lots of valuable info! If anyone needs any info let me know.
Limitations are physical when it comes to the Dodge hemis. Not how much money you can throw at one. Your opinion is noted.
My 241 is fast enough for me and for sure it's not a SBC, it a HEMI...Enough said!!!! The Locking nut is under the rocker and this was done only on the exhaust.. I'm not sure how Gary did it, I just know it works. The exhaust rockers don't hit my valve covers.. Duane..
Dear Mr Waters, Thanks for your insights regarding the astonishing physical properties of Chrysler Hemis. At your convenience, please forward a list of engines without "limitations that are physical"; or perhaps I should say...engines with unlimited physical properties. Presumably the infinitely deformable Chrysler Hemi will be at the top of the list. Although as you rightly point out Dodge Hemis will not appear on this exclusive list. As Chrysler Hemis have no known physical limitations, which version (331,354,392) would you shrink to fit in the under 260 cubic inch cl*** at the salt flats? You know... to minimize the width of the engine and thereby reduce aerodynamic drag. Further, your inference is well taken that hot rodders never "throw" money at Chrysler Hemis; and that it would cost far more money to complete a factory rebuild on a 241 compared to a 392 [i.e., buy a rebuildable core engine, use Egge Machine Co. parts, stock sheet metal, etc]. Good Point. Thanks again for your penetrating opinions; I'm sure your advice is a source of inspiration to Hemi enthusiasts everywhere. Sincerely, Trakrodstr
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