Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

TPI/400 small block WILL IT FIT??

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by 71Blazer, Apr 14, 2002.

  1. 71Blazer

    71Blazer Registered Member

    Joined:
    Dec 17, 2001
    Posts:
    24
    Likes Received:
    0
    Location:
    Coupeville, WA
    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)
     
  2. Triaged

    Triaged 1/2 ton status

    Joined:
    Feb 21, 2001
    Posts:
    3,808
    Likes Received:
    0
    Location:
    CA (LA/OC area)
    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.
     
  3. mudhog

    mudhog THEGAME Staff Member Super Moderator

    Joined:
    Nov 6, 2000
    Posts:
    17,899
    Likes Received:
    2
    Location:
    portland oregon
    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
     
  4. blazer72

    blazer72 1/2 ton status

    Joined:
    Apr 13, 2000
    Posts:
    939
    Likes Received:
    0
    Location:
    KCMO
    Yes I run one with a aftermarkit intake which is biger than the GM one
     
  5. BurbinOR

    BurbinOR 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    5,829
    Likes Received:
    0
    Location:
    Oregon
    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.
     
  6. 71Blazer

    71Blazer Registered Member

    Joined:
    Dec 17, 2001
    Posts:
    24
    Likes Received:
    0
    Location:
    Coupeville, WA
    What is involved in drilling out the steam holes on the heads?
     
  7. Triaged

    Triaged 1/2 ton status

    Joined:
    Feb 21, 2001
    Posts:
    3,808
    Likes Received:
    0
    Location:
    CA (LA/OC area)
    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.
     
  8. 71Blazer

    71Blazer Registered Member

    Joined:
    Dec 17, 2001
    Posts:
    24
    Likes Received:
    0
    Location:
    Coupeville, WA
    Chalk it up to dumb luck. How often does a project really work out better than expected? Yahoo!!!
     
  9. Blazer1970

    Blazer1970 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,600
    Likes Received:
    0
    Location:
    Old Mission, MI
    Unless you are going to swap heads, you already have the steam holes.
     
  10. BurbinOR

    BurbinOR 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    5,829
    Likes Received:
    0
    Location:
    Oregon
    He more than likely need to swap heads if he has a post 87 TPI setup, as the intake mount holes changed that year.
     
  11. Blazer1970

    Blazer1970 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,600
    Likes Received:
    0
    Location:
    Old Mission, MI
    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.
     
  12. 71Blazer

    71Blazer Registered Member

    Joined:
    Dec 17, 2001
    Posts:
    24
    Likes Received:
    0
    Location:
    Coupeville, WA
    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!
     
  13. BurbinOR

    BurbinOR 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    5,829
    Likes Received:
    0
    Location:
    Oregon
    Cool, keep us posted..............
     

Share This Page