Hemikiller's 71 Mach 1 upgrade thread

[c9zx]

I'm very glad to hear you can move forward now. Chuck

 

[Hemikiller]

Just got word from the machine shop the engine is all back together and only waiting on the pushrods to be complete, those should be here Weds. Going to take a ride down at lunch time today to give it a look-see.

 

[Hemikiller]

Current status




Funny date code for closed chamber heads....

 

[mrgmhale]

Roller Lifters, very cool. Hydraulic I assume?

 

[tony-muscle]

Nice progress. I see that you are going with 5/16" push rods instead of 3/8". I had 5/16" but now that I am doing some head work and have to change the push rods due to length differences, I am going to 3/8". I just bought the 3/8 Manley guides. I think these [push rods] add a bit of weight to the system but add stability. I will also have to do with the total lift and spring rate.

 

[Hemikiller]

Roller Lifters, very cool. Hydraulic I assume?

Yes, Howards hydraulic rollers

Nice progress. I see that you are going with 5/16" push rods instead of 3/8". I had 5/16" but now that I am doing some head work and have to change the push rods due to length differences, I am going to 3/8". I just bought the 3/8 Manley guides. I think these [push rods] add a bit of weight to the system but add stability. I will also have to do with the total lift and spring rate.

Yes, I'm using Trend .105" wall chromoly 5/16 pushrods. I was going to suggest we go with 3/8" but he already had the heads on before I could talk to him, so 5/16" it is.

 

[tony-muscle]

Yes, I'm using Trend .105" wall chromoly 5/16 pushrods. I was going to suggest we go with 3/8" but he already had the heads on before I could talk to him, so 5/16" it is.

Are those restricted or regular?

 

[Hemikiller]

Brought the engine home yesterday. It'll be going back to his shop in a couple weeks for running in on the dyno. In the meantime, I'll get the the rest of the parts sorted and ready to go. Have to install a new gear on the distributor, fab a taller throttle bracket, stuff like that.




One of these is not like the others. We're leaning towards a bad set of rod bearings. There are a couple other shells that have spots where the babbit flaked off, which I've never seen before. Mains are in perfect shape, as are the other 11 of the 16 rod shells.

 

[tpj71mach]

Yes, same here. I'd done it on cars that had prop rods, so you could rock the hood back vertically. I was so conditioned to remove the hood as Step #1 on anything with conventional sprung hinges that it never even occurred to me to try.

I followed the procedure in the 71 shop manual as an exercise, and it worked perfectly. I had removed the bellhousing, flywheel, clutch and all that as a precaution, but it's not really necessary.

Anyway, proof is in the pudding, I shot a timelapse video just for those that tried to call BS on me.

You made that look easy

 

[tony-muscle]

Are those restricted or regular?

@Hemikiller , I am curious if you are using regular or restricted push rods?

 

[Hemikiller]

You made that look easy

not my first rodeo

@Hemikiller , I am curious if you are using regular or restricted push rods?

Regular, the ball end on my old pushrods has a .075" opening. Didn't measure the new ones.