TPI/400 small block WILL IT FIT??

[71Blazer]

Anyone ever heard of or actually combined TPI with a 400 small block?

I just discovered my 350 is really a 400 which is not bad but now do I have a TPI that won't fit? (That would be very bad/expensive discovery)

 

[Triaged]

With the long small diameter runners on that thing you would have all sorts of low end torque!...it would just take a dive at around 4000 rpm. If I had the cash I would try it.

 

[mudhog]

frank (blazinor) has a 400 bored .30 over=406 and has a tpi setup on his and man is it sweet /forums/images/icons/smile.gif pm him with any???? you might have /forums/images/icons/smile.gif

 

[blazer72]

Yes I run one with a aftermarkit intake which is biger than the GM one

 

[BurbinOR]

Only thing is the heads need the steam holes drilled..........and it does not die at 4000, at least mine doesn't - pulls quite nicely to 4500+.

You have a better situation than you thought, amigo.

 

[71Blazer]

What is involved in drilling out the steam holes on the heads?

 

[Triaged]

You just place a head gasket on the head and drill out the holes (to the same size that the gasket has) that should be in between the cylinders.

 

[71Blazer]

Chalk it up to dumb luck. How often does a project really work out better than expected? Yahoo!!!

 

[Blazer1970]

Unless you are going to swap heads, you already have the steam holes.

 

[BurbinOR]

He more than likely need to swap heads if he has a post 87 TPI setup, as the intake mount holes changed that year.

 

[Blazer1970]

It is real easy to modify the intake (TPI base in this case) to bolt to the older style heads. It is just the angle of the center two bolt holes on each side.

 

[71Blazer]

It's an '86 corvette setup converted to speed density. Should bolt right up nicely. It comes with an Accel DFI so I can tune it to my liking... after some trial and error to be sure. BTW thanks for the input!

 

[BurbinOR]

Cool, keep us posted..............