Do the intake manifold bolts for P400 turbo heads enter at the same angles as N/A heads?

[TOBASH]

On military vehicle there is a difference between the entry angle for the manifold bolts of the intake manifold heads between turbo and N/A, however on civilian vehicles I don’t know if it is the same problem.

Currently, on my Civilian Hummer H1 I have a Whipple supercharger with a manifold that mates to the normally aspirated heads.

If I swap to using a P400 long block, will those bolts come in at the wrong angle and would I need to convert to turbo charging?

TIA

 

[NVW]

The only difference I have heard of is engines with a center mount turbo have the different bolt angle.

 

[Twisted Steel Performance]

Truck and N/A heads have the same angle intake holes ( 90*), "center mount" heads used on hummer turbo will have different angle holes ( 60* ) .

If the P400 long block is a hummer it will have center mount holes, it all depends on the true application the motor was built for...

And there is a intake with a cac inside, it's a new design and can have any style top plate for nearly any blower as it was designed for superchargers, I have adapted it for turbo use in the US... but it would need modifying for DS4 pumps, and there is not enough interest for me to go forward with the mods at this time...

 

[Twisted Steel Performance]

If the heads have different angle bolt holes than what you have or need now, you could swap heads to what you need.... If you like the blower and have everything set up the easiest fix would be a head swap...

 

[Twisted Steel Performance]

@TOBASH , In your other thread you mentioned w/m injection with your blower, where in the intake stream would you inject, before or after the blower? I've seen a number of water injected blowers and they all were after the screws to prevent damage to the blower... just wondering....

 

[TOBASH]

@TOBASH , In your other thread you mentioned w/m injection with your blower, where in the intake stream would you inject, before or after the blower? I've seen a number of water injected blowers and they all were after the screws to prevent damage to the blower... just wondering....

Agreed.

How do I get in touch with you regarding some of the others things you mentioned. Your website is gone.

 

[Twisted Steel Performance]

I'll pm you a email & cell...