Matt's '92/'99 4X4 V8/4R70W swap!

[seth247]

Ok that was me bein stupid.

That was an exhaust and an intake lobe. Not two exhausts.

But still why are they different?? Is it that the angle from lobe to rocker on the exhaust is a little differnt than the intake. Requiring a slightly different length?

I still don't want to buy two different sets of pushrods.

 

[seth247]

Ok this is what I've found. All the intake lobes on the comp cam have a base circle diameter of 1.360. And all the exhaust are 1.345. A difference of .015 inches.

The cam I pulled from the engine does not have this difference.

The only idea I have is that they gave some room for exhaust valve expansion... Maybe?

 

[seth247]

dananananananananananananananana MOCK UP!

 

[410Fortune]

oooooooooooooh nice!!!
where is the 1" phenolic spacer? = totally worth it
You have an opportunity to fit your coil pack, throttle linkage, etc now with the 1" spacer added instead of doing it in the truck = pita (like me)

 

[seth247]

I had completely forgotten about That. Will have to pick one up.

I was just slaping it together for a picture. I already tore everything back down so I can do the pistons and rings when I get em.

 

[CDW6212R]

Nice pictures.

The cam specs are likely that way due to machining tolerances. 99% of all common cams you read/hear about are cheap SADI core cams. If you want the absolute best and most accurate/durable cam, you have to buy a billet core cam. That's where the $400 custom cam shines, they will be dead on matching specs, and very strong compared to a SADI cam. That's all for high level of engine building demands, save that for a best engine combination.

The BW4406 units are different enough that you need to find the right one to start with. They may be virtually the same inside, but changing one wouldn't be worth the trouble.

 

[seth247]

Yeah That guy got back to me and the tcase is a cable drive unit from a 4r70w.

Wants like 240 +110 shipping.

 

[turboexplorer]

Engine looks GREAT!!

 

[Willard]

Zish thang ish gonna be schweet!

 

[seth247]

...drunk much?

Thanks guys!

I hope my christmas bonus is big enough to pay for some of the stuff I need.

 

[turboexplorer]

Wish I got a Christmas Bonus this year. Nope company decided not to give one this year, bas O but owner flew down in his new jet last week
O well I guess life goes on

 

[410Fortune]

$110 shipping is ALOT LOL

Fitting the 4406 into a Gen I would sure be interesting, I think you would be the first
I measured the BII and I measured the 4406, then I decided to go with the 1354 again..

4406 = I wouldnt have any driveshaft, and I amnot sure it would even fit between the frame rails
something to think about!

 

[seth247]

hhhmm could you measure the distance from the front output shaft to the rear output on your 4406?

I also don't have much room for the front shaft to move laterally.

 

[seth247]

oh man oh man oh man i want one of these!

 

[seth247]

Ok I have almost decided to use a BW1356.

We know for a fact that it fits. The wiring on the electric shift looks almost identical to my 1354.

and I found one for cheap.

Thanks to wicked Windsor for suggesting it.

 

[410Fortune]

heck yeah! Good option if it fits!
I will be wathcing closely LOL would be alot easier to be able to use any 4r70w in my BII instead of always having to use the AA adapter and output shaft...although the 1354 t case is plenty strong, small, and cheap to replace!

 

[WickedWindsor]

Go for it Matt. Get the 1356.
Just remember that you'll need a 2" body lift to clear the top of the transfer case (helps with engine clearance and engine/tranny bolts etc. too!).
Also you'll need to move the tranny mount over at about 1" to passenger side to clear drivers frame rail with tcase.
Today i fixed an interference issue I had with the front driveshaft slightly scraping the fuel filter bracket. I just ground 1/2" off bottom of left edge bracket, drilled two new holes in frame rail to relocate braket 3/8" inwards to drivers side more.
You'll never be done cause there will be so many "little" things to tidy up. Mines been "done" for almost 2 years now and stuff keeps popping up. I must say though, I love my truck, but everything's new underneath and the body is getting to be a saggy old cow. Oh well!

 

[410Fortune]

so get your 1356 now before you fit your engine and trans!

 

[seth247]

I have to wait for Christmas bonus. Then I'm grabbin it.

 

[seth247]

Ok comp cams says that .015 is within tolerance and won't affect lifter preload enough to worry about. My machinist agrees.

Machinist says to use STD/STD bearings so I'll pick those up after the 16th.

Comp cams suggest ditching the stock springs for there double spring setup with this cam. Set of 16 is only 90$ so I'm gonna get em.

There are two sets of springs recomended for this cam. Summit dies not list an actual open/closed spring pressure. Just the spring rate. Which is 340 for one set and 377 for the other.

Which should I use?