Purchased the throttle body yesterday. Also did some math.

The charge piping will be 3" aluminum.

Four 1-¾" throttle blades = 3.5 square inches
Four 1-¾"x¼" throttle shafts = 1.75 square inches
Total Flowing Surface Area = 1.75 square inches

Four 2-¼" throttle blades = 4.5 square inches
Four 2-¼"x¼" throttle shafts = 2.25 square inches
Total Flowing Surface Area = 2.25 square inches

Half a square inch doesn't seem like alot, but trying to squeeze air from a 3" pipe through an equivalently 2.25" pipe (or even 1.75") is still quite the restriction.
But with a manifold that is almost 4500 sized and needs the raised mounting surface anyways.... Why not?

Stock air hat is 3.5" tall.
New hat is 5.5" tall.

Keg is 8.25" tall
M1 is 7" tall

Stock TB is 1.5" tall
4500 TB is 2" tall

So according to that math, I should only be 1.25" taller than a stock setup. That should easily clear the stock hood I think?

 

Alot of news happened today. NHRA event next weekend got cancelled. The 2 weekends after that are TBD but the prospects aren't good.



Procharger came in yesterday. Manifold got machined today.



Took a 4150 manifold and made this behemoth Accufab 4500 throttle body fit into it with some help from PDH Precision Engineering , then chipped away quite a bit of material to flow ALL the air with minimal restriction and also open up the plenum volume a bit. Still need to clean up the transition into the runners.



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nice work, I miss machining , was a machinist 6 years and then some QC....

 

This guy is good. His dad was a machinist for years and now he's been doing it for about 10. This is an old bridgeport - probably 40 or 50 years old. No digital readout, doing everything by hand and eye.

 

This update will comprise of two posts to split the photo count...



Got the new lifter from Bullet this week. Pulled the head off and replaced the lifter yesterday and FINALLY have 16 oiling rocker arms. What a cluster that was.



I still need to grind away alot of material on the intake manifold. The exhaust port plates also need some massaging. I also have a LOOONG shopping list.



Once the manifold has been cleaned up inside, I'll put the injectors and fuel rails on.



Setting the distributor drive gear was a little fun. It took 3 tries but I finally got it in the right place.



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What are you planning on dropping that into? Is there going to be ROOM for the blower under the hood??

 

It's going in the dakota.

There is room. Barely. I think. It's going to be very close if not interference between the cold piping and the left front tire. Have a plan B if it does go interference, but it'll be a capital B to route.

 

Another bulky update.

1- Got the intake installed, but the end gaps are HUGE. We didn't use the kit end gaskets but probably should have... if it blows oil out the front or back, we'll know why.

2- Sorted out making the throttle body clear the fuel rails. It clears by literally gasket thickness.

3- Working on a strut from the motor mount to the blower plate.

4- I've been looking at photos of another truck with Spintechs to sort out exactly where things are going to land

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More update photos. The motor mount plate is welded ridiculously on the bottom - it's not pretty, but there's alot of attachment.

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