Stock Fuel Rails, why they don’t keep up

[16GoManGoHC2]

Ditch the hex head bolts for the rails. 1st time you need to take them off you will wish you did. I went with same style small head bolt you told me to use for the blower itself. I can use a ratcheting wrench now for the rails

Good idea, luckily I have a close quarters hex bit kit so it wasn’t that much of a pain. I installed the injectors and rails after the blower was tq’d down. Yes, it’s tight getting them in doing such.

 

[vortecd]

Yes, I emailed them pictures, snout on the 3.8 is a little different, it’s got just a tad bigger inlet area.

View attachment 118472 View attachment 118473

Correct but you are comparing a 3.0 to a 3.8. Gen 5 3.8 also has big inlet

 

[RGPIII]

Yes, I emailed them pictures, snout on the 3.8 is a little different, it’s got just a tad bigger inlet area.

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show offf!!!!

 

[vortecd]

Good idea, luckily I have a close quarters hex bit kit so it wasn’t that much of a pain. I installed the injectors and rails after the blower was tq’d down. Yes, it’s tight getting them in doing such.

I had to take them off to take injectors off and Jon was working on one he had to swap injectors, true pain

 

[16GoManGoHC2]

Gen 6 was developed already?

Yep, supposed to be a bit more efficient rotor design. Rotors are pinned to the shafts as well, and just a bit bigger.

 

[vortecd]

What size tb are you going to run?

 

[fubar569]

...a new 6th Gen 3.8?

......well then. Guess we have difficult choices to make now.

 

[16GoManGoHC2]

What size tb are you going to run?

Putting the Nick Williams 112 back on. Have a specially made adapter for it.

 

[16GoManGoHC2]

Look how much fatter the 3.8 is then the 3.0, rotor case protrudes into the intake runner area even.



Rotors pinned to the shafts as well

 

[16GoManGoHC2]

What size tb are you going to run?

But even the huge compared to stock TB the 112 looks puny and out of place on the huge inlet of the 3.8. I may have to go to the 130 just because of that, just doesn’t look right.

 

[16GoManGoHC2]

But it sure flows enough!!



3.00 Pressure Ratio baby!!

 

[16GoManGoHC2]

Correct but you are comparing a 3.0 to a 3.8. Gen 5 3.8 also has big inlet

My buddies Gen 5 3.8 hit as well, same spot, worse than mine. He had to grind much more off then I did.

 

[RGPIII]

My buddies Gen 5 3.8 hit as well, same spot, worse than mine. He had to grind much more off then I did.

View attachment 118498

Even with the spacers?

 

[16GoManGoHC2]

Even with the spacers?

No, just gaskets, no spacers. With spacers unfortunately bypass motor hits the hood. You can cut the center member out of the hood and it will clear that’s just something I’m not up for doing. Keep the car to the point that if I ever needed to put it back to stock except for the engine internals, I can I have all the parts on hand still including the stock manual transmission, a new stock clutch and TOB assy, even a NIB 3.70 rear. I even have a whole set of spare leathers for the interior.

 

[16GoManGoHC2]

Unfortunately now I’m out of fuel pump, time for a third pump.



But man even with just 5 degrees of timing and slipping the thing pulled it’s highest third gear G force ever up the concrete test sloop bridge I do such on, .85 G’s of continuous acceleration. Felt GREAT!!!

 

[Unholy707]

First hurdle, stock fuel rails do not fit on the 3.8, there’s no mounting points for them provided

View attachment 118454

Whipple cut me a GREAT deal on the Fuel Rail kit for it, THANK YOU Whipple!!
NICE kit, much nicer then Fore kits I have seen View attachment 118448

Why doesn’t yours have the extra brick in the middle?

 

[Unholy707]

Next hurdle, without spacers blower snout is hitting block keeping it from mating to heads and sealing on gaskets. Good thing in look for this stuff. Hard to see it, I wonder how many are going to get tightened down without seeing this and have intake leaks and stress out into the blower housing!??
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Surgery time

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A little paint and like new again

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My 4.5 hit on the same area grinder the crap out of it

 

[fumanchu182]

30 PSI of boost there buddy, that's a rocket ship now.

 

[16GoManGoHC2]

Why doesn’t yours have the extra brick in the middle?

Cooling bricks are in the lid, they’re all the same 3.0 and 3.8 Gen 5 and 6 unless you get the thicker ones for use with a spacer. I have never seen a separate cooling block in the middle?

 

[Unholy707]

Cooling bricks are in the lid, they’re all the same 3.0 and 3.8 Gen 5 and 6 unless you get the thicker ones for use with a spacer. I have never seen a separate cooling block in the middle?

I have seen several 3.8s with the spacer in the middle, specifically the billet ones. @GNBRETT’s has one, I think a few others