Anything special about rebuilding a Mopar engine?

[jeryst]

A friend of mine has rebuilt a lot of Chevy motors, but he says that he has never done a Mopar motor. He is willing to help me do it at no cost, so all I will have in it is the parts, but he wants to know if there is anything different to watch out for.

Have any of you rebuilt both a Chevy motor and a Mopar motor? If so, are there any differences to watch out for?

[Swedefish]

I had a chebby guy rebuillt my other engine, and he forgot the oil plug behind the timing cover just above the crank.
Guess they don`t have those on the chebby engines. You guys can guess the result 

[nivvy]

A friend of mine has rebuilt a lot of Chevy motors, but he says that he has never done a Mopar motor. He is willing to help me do it at no cost, so all I will have in it is the parts, but he wants to know if there is anything different to watch out for.

Have any of you rebuilt both a Chevy motor and a Mopar motor? If so, are there any differences to watch out for?

who is it........ pm me....... 

[Rob C]

Watch for all the oil plugs at the rear of the block and the plug you have to drive in to seperate the oil passages to and from the filter. Do not loose the attaching bolts for the cam plate.

Get "How to rebuild my small block Mopar" (SA Design book) and thumb through it and turn the pages while you do it.

[Moparal]

Are you going big block or small block?

Premium parts is a must. Pay special attention to cam centerline, Propper valve guide clearance is a must on small blocks or they will seeze up in the head. bronze bushing in the distributor drive hole. With the oiler slit pointing parallel to the cam.

If your guy is good and can put the machine work on the numbers, then all should be well. 

[ntstlgl1970]

#4 cam bearing, make sure all 3 holes are lined up, and the guy had the correct tool to install cam bearings since they are all different sizes unlike the chevy. Make sure the oiling holes on the rocker shafts are pointed down and towards the exhaust side of the head. If you are rebuilding stock heads with some miles on them, figure you'll need 16 valves, 16 guides and exhaust seats. For the most part, a motor is a motor is a motor, any good machinist should be able to build a mopar no problem.

[hemiken]

I will add my  here aswell...............
Do not listen to what your Chevy guy recommends you use when it comes time to pick a camshaft , Chevys have a smaller bore diameter in regards to the Lifters and therefore have different characteristics to what is needed by a Mopar engine. 
Post up your combination and wait for a cam recommendation from our resident Cam Selector Man CP if he does not mind of course.

[nivvy]

I will add my  here aswell...............
Do not listen to what your Chevy guy recommends you use when it comes time to pick a camshaft , Chevys have a smaller bore diameter in regards to the Lifters and therefore have different characteristics to what is needed by a Mopar engine. 
Post up your combination and wait for a cam recommendation from our resident Cam Selector Man CP if he does not mind of course.

CP will tell you comp cams have chevy lobes anyway,,,,,,,,,,,,,, 

[airfueleddie]

#3 Thrust bearing may be a little new to them,(Chevy dude). The rockers are totally different,(shaft vs. stud). The intermediate shaft/bottom of dizzy, dry big block intake, external B/RB oil pump, actually they may only build MoPars after this experience!

[LAA66]

Watch for all the oil plugs at the rear of the block and the plug you have to drive in to seperate the oil passages to and from the filter. Do not loose the attaching bolts for the cam plate.

Get "How to rebuild my small block Mopar" (SA Design book) and thumb through it and turn the pages while you do it.

  A very good book to have during the build.

[Chryco Psycho]

the basic machining is the same except that the block is 2-3 times as hard so boring will take more time but the design is totally different
 as stated 99% of Comps Mopar grinds are listed in the small block chev section , I wouldn`t waste my time with a Comp Grind ever

[440mike]

i have a comp cam in my engine that come with it that the boss put in, are they bad ?

it made 569 hp on the super flow engine dyno and 428 later on the car dyno but i am thinking the engine is getting worse because i overheated it at the car dyno.

[Chryco Psycho]

bad is an abiguous term , you will not make as much power as other cams but teh comp should live just fine , basically it is probably not worth the time & cost to replace it but if you are ordering a cam anyway for the same cost there are better cams for Mopars

[Rob C]

440 mike;

CP has a point. The general way of grinding cams through major manufactures is they will just use the same lobe design to save them money and time. Enter the most commonly used. Chevy lobes. From a biz stand point, I can see why they would do that. Now enter our stand point... Thanks for nothin! LOL

Comp Cams has a streetable series cam line called the XE-HI-Lift that takes preety good advantage of the .904 lifter. Only a few others in there catolog will be more aggresive than that.

Not taking advantage of the lifter diameter isn't the end of the world. If your rcing the car, you'll want to look at this path of full advantage.

[rallyechall]

It is a good idea to purchase a burnish ball to run through the lifter bores. This will ensure a smooth bore, and ensure it has .906 diameter for your lifters to travel in. You can purchase one from http://www.hughesengines.com.