Straight-up timing set for a 400

[fatherdoug]

Can you post some pic's Doug, thanks

Oh, I thought you wanted a picture of my smiling face with a box of new truck parts.

 

[LEB Ben]

Thanks Ben! that's exactly what I wanted to see

No problem...but are you sure you don't want a picture of Doug too??? He's really cute, especially for being 112 years old.

 

[fatherdoug]

No problem...but are you sure you don't want a picture of Doug too??? He's really cute, especially for being 112 years old.

That would put you at about 65?

 

[LEB Ben]

That would put you at about 65?

Close...27...but that would still put you at 74 if the numbers are the same. You look good for 112, not so much for 74.

 

[m78]

What does this straight up timing do for the engine ?

 

[LEB Ben]

To my understanding...it's about valvetrain movement. I don't believe you're actually 'gaining' anything with straight up timing, rather, shifting the power band, creating more low end torque and response, while sacrificing top end performance.

 

[Beach66Bum]

Oh, I thought you wanted a picture of my smiling face with a box of new truck parts.

ack, I'm terrible at writing what's in my head lol!

should have added that it would be nice to see pic's of the gear swap,

men are banned from "selfie" pic's, hahaha!

 

[m78]

ack, I'm terrible at writing what's in my head lol!

should have added that it would be nice to see pic's of the gear swap,

men are banned from "selfie" pic's, hahaha!

 

[m78]

To my understanding...it's about valvetrain movement. I don't believe you're actually 'gaining' anything with straight up timing, rather, shifting the power band, creating more low end torque and response, while sacrificing top end performance.

Thats interesting. My 400 with 4:11 has a lot of low end torque and I couldn't see the need for more.

Though it does seem to run out of breath really quick at the high end.

 

[LEB Ben]

Thats interesting. My 400 with 4:11 has a lot of low end torque and I couldn't see the need for more.

Though it does seem to run out of breath really quick at the high end.

I guess in theory then, if you used the retarded 4* keyway, that would help your top end...if I understand things correctly.

 

[fatherdoug]

Another question - Do I set the engine at TDC for the #1 cylinder before I remove the old timing set?

 

[SuperCab]

Iirc you just have to line the marks up on the new set for it to be right.

 

[fatherdoug]

Thank you, Matt. If the weather continues to cooperate, it might happen this week...........

 

[LEB Ben]

Another question - Do I set the engine at TDC for the #1 cylinder before I remove the old timing set?

Doesn't really matter. But before you put the new set on, make sure #1 is at TDC and make sure your dizzy is at #1. If you by chance loose count of how many rotations the crank or dizzy make getting them both to #1/TDC, there's a chance that when you try to fire the truck for the first time, it won't fire. Don't freak out, you're just 180* out, so you'll need to pull the dizzy, rotate and reseat.

 

[fatherdoug]

Thank you, Ben. If I pull the number 1 sparkplug, stick my finger over the hole, and I get pressure, rather than suction when I rotate the engine, I know I am on the compression stroke.................Right?

 

[LEB Ben]

Yessir. Just remember to unplug your coil. Since everything is off the front of the engine anyway, I usually just stick the crank bolt back on, grab a 15/16" (I think) socket and my long 1/2" and roll over by hand.

 

[fatherdoug]

Can you post some pic's Doug, thanks

Here you go, Roy. As requested.

 

[DNFXDLI]

Andy Warhol?



Or Bruce Dern?

 

[fatherdoug]

Bruce Warhol!

 

[DNFXDLI]

Bruce Warhol!