440 machine work
#1
440 machine work
I'm in the process of picking a machine shop. My local shops are blue oval, and bowtie guys. Are there any steps in the machining of a Mopar block that is different from the other guys? I've only questioned one of the shops, my question for him was how do you measure and square the deck surface. His reply was they use a fixture that measures from the oil pan rail. That to me doesn't seem like a good measuring point.
#4
the out of SQ can be right. i had a 1965 413 out of a 300 L that had decks very much out of SQ. when the shop started to bore the holes. the machinist reset up 3 diff times and all the holes was out of SQ. after that the engine ran so much better it was scary. so you are right i think that this could happen. but it is hard to tell where SQ really comes from.
#10
Super Moderator
Where are you located? I can't believe there is not a competent engine builder within fifty miles of you.
I guess I'm lucky up here in Iowa, I can think of five engine builders with dynos, Quick Performance in Ames is 1.5 hrs. away and there are several chassis builders in the area.
I guess I'm lucky up here in Iowa, I can think of five engine builders with dynos, Quick Performance in Ames is 1.5 hrs. away and there are several chassis builders in the area.
#13
I live in south central Ky. We Have a few machine shops here in the area and a few are known to do good work. They aren't Mopar oriented though. The engine is a street strip motor, nothing to fancy, but I want it set up right. I'm not afraid to pay for good work as I only want to do this once.
#15
#16
Everything..... and I mean everything...... is corrected from the Mains(centerline) in the block.
Apologies for shouting, but think about it here ?
USE a Torque Plate for Hone fitting the Pistons, especially if using either a 4032 or 2618 Alloy Forged Piston. If the shop does not have a BB Mopar T/Plate.... WALK AWAY !
Apologies for shouting, but think about it here ?
USE a Torque Plate for Hone fitting the Pistons, especially if using either a 4032 or 2618 Alloy Forged Piston. If the shop does not have a BB Mopar T/Plate.... WALK AWAY !
#19
Super Moderator
on what?
#22
Mopar Fanatic
the link works just have to highlight it and open in a new tab, it's a Hughes race prepped block for $1899
http://www.hughesengines.com/Index/p...3&partid=22953
http://www.hughesengines.com/Index/p...3&partid=22953
#23
Super Moderator
Looks like you would be paying a premium for a block then the work you need. The thing I don't like about ready to go blocks is the bores aren't sized to the pistons. They do have an option I do on my big blocks, the 1/2' hemi size oil pick up tube.
#24
Most shops will then add a "safety" factor of EXTRA clearance according to application, ie; Nitrous, Blown, Compression Ratio, RPM expected, etc., etc.
WITHOUT a T/Plate.... generally speaking most shops will add another up to another .001" clearance to compensate for lack of head distortion.
If it is a long skirt piston like a stock 440, with a little extra clearance it will still run "quietly".
NOT so with shorter skirt "Stroker" 2618 alloy Pistons, where the all to common complaint is "Piston Slap" due to excessive Piston to Wall clearance because they did NOT have a T/Plate and added clearance.
Any competent Machine Shop can do the work, but without a T/Plate, you take what you get, and that does not mean it is right or the best it can be.
Most "competent" Machine Shops doing "performance" work..... will tell you straight up it is being done WITHOUT a T/Plate if they don't have one, wherein, it is now YOUR baby !
#25
Mopar Fan
Where ever you go make sure that when they do the block they don't mill the intake surface as well completely unnecessary and you lose the factory stamps on the 440 Id pad. Happened to me after paying a premium price for an HP block.
#26
Super Moderator
Not completely true, if decking the block and you might want to use a newer style intake with the valley pan cast in you will need to have the top of the block cut also.
http://www.summitracing.com/parts/dc...iew/make/dodge
It could be a problem with solid valley pans also.
http://store.440source.com/Sheet-Met...info/127-1011/
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