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shop manual says to torque 340's to 95 ft lbs.. why is it it doesn't warp 340 blocks with no issues with gaskets, heads or blocks? 273 is basically same block with smaller bore.

arp bolts says to torque there bolts to 100 ft lbs.. Is that ok to do ?

I have new arp bolts to use this time around ... arp recommends 100 ft lbs and there special lube. I'll be using a composite gasket 318 with a small fire ring also . that mr gasket 1121 has such a large bore ... it's almost to the edge of the valley ... with a 3/8" gap all the way around...

two different compression engines.. do you really think 85ft lbs is going to hold back a 10.5 compression engine that spins 6000 rpms ? 340's were 10 to one compression and they have 95 ft lbs torque. what gives? can't believe everything you read .

chilton 273 318 head torque spec says 85 ft lbs in low compression engines but does not mention what it would be for the commando ....just says 273 318 .. it says the 340 is 95 ft lbs. wouldn't you think the commando with 10.5 compression will be torqued at 95 ft lbs also like the 340...

Thought I'd bring this up for concerns .. look at the block deck and you can see it has rough cut and not perfectly flat. could this be why it keeps blowing head gaskets? the other block I'm thinking about using has a smooth flat deck surface .

no nothing wrong with pcv set up.. engine is puffing exhaust out the valve cover inlets. internal block pressure from the head gasket blown .

I always run a pcv

Yeah thanks guys !! that's what it appears like.. warped block .. I check it with a straight edge that last two times the head was off and appeared to be in tolerances. this time it it blew on #2 and 4 again. last time was on #6 .I have another good block to start over with .

this 273 has all the good stuff in the engine. 920 heads ld4b intake

ok A few hours ago I did a compression check most cylinders were 150-160 # 2 cyl had 50# dead cyl. so took valve cover off check valve gear looks all fine . bumped engine over.... looked thru the drain back areas in the head seen the head gasket pertruding out Buldging .. when...

If you all have been watching on my 273 commando engine build I have replaced the head gasket 3 times in the past two years on the pass side ... searching my posts you will the details on different topics .... So.......... I put on approx couple hundred hard miles since I installed the mr...

UPDATE UPDATE ! I put on approx couple hundred hard miles since I installed the mr gasket1112 head gaskets and had the head milled so they were flat . Now I have another issue... It is huffing smoke/ exhaust pressure out the valve cover filler holes. both sides . Just happened so will do...

Get rid of that carb.... try another one.. the carb is dumping fuel. float adjustments . needle and seats pin hole in float . 6 mpg has nothing to do with timing or such in you case.

Searching for a nice clean driver side lower rocker molding for a 65 barracuda approx 6 feet long . 65 valiant may also be the same, not sure . 66 barracuda is different though . can be shipped in pcv tubing or card board tubing. let me know what you have , I'm in milwaukee wi.

Why is this so crucial these days ? back in the old days the myth was ......set loose for more top end power or tight for more torque or vise versa.

searching for fender well headers for sb .. size > 1 5/8" or 1 3/4" hedman , jr or what ever. . all tubes must go thru fender well no chassis headers please .. show me what you have . I have a early abody . thanks !

Yep ! :thumbsup: then it's time to hang on and keep it straight ! lol

Nobody believes me when I tell them It's a 273 ! LOL

Hear is a short video of my 65 barracuda with a beasty 273 4 speed and 3:55 gears . don't under estimate a 273 LOL ! this car is very fast . in this video , I'm just tapping the gas pedal . not even into the secondaries. It loves to rev as you can hear and not even close to my red line...

there is a you tube video with 66 ddarts backing out of a garage , would those cars be yours ?

...was at 13" initial . it has the fbo plate in a mopar electronic distributor ... so I set it according to what fbo says with the plate set at 14* and 20* initial for a total of 34* total timing . took it out for a spin and engine did not like that ... the hole car just shook violently...

65 dart GT . I had one it was a convertible I installed a Mopar crate motor 360 Magnum 402 stroker in it ran 11 5 all day long on motor

Any pictures of that '66 dart. There's a YouTube video of a white one with red interior. They took it for a spin up and down the street and that one had a 340 in it. Sounded pretty nasty

Oh this little 273 revs pretty quick for what it is... That isn't even a 2000 RPM Rev. I can imagine though with a little lightning up will do... Most people do not believe this is a 273 engine

thru the mufflers dumped at the axle .

idle short rev 273 beast