Frankenstein 454 swap. Overheating at idle.

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

83Burban

Full Access Member
Joined
Apr 10, 2021
Posts
207
Reaction score
268
Location
Kansas CIty, MO
First Name
Matthew
Truck Year
1983
Truck Model
Suburban K10
Engine Size
454
.......hood won't shut.......

Lol
 

83Burban

Full Access Member
Joined
Apr 10, 2021
Posts
207
Reaction score
268
Location
Kansas CIty, MO
First Name
Matthew
Truck Year
1983
Truck Model
Suburban K10
Engine Size
454
Yeah, the stem for the cap is just a hair too tall. There is a nub on the hood skeleton (idk what thats actually called) that contacts the rad cap...just barely.

How much "persuading" could I do with hammer or grinder with out compromising the hood integrity?
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Yeah, the stem for the cap is just a hair too tall. There is a nub on the hood skeleton (idk what thats actually called) that contacts the rad cap...just barely.

How much "persuading" could I do with hammer or grinder with out compromising the hood integrity?

Pics? How close is it to closing?
 

83Burban

Full Access Member
Joined
Apr 10, 2021
Posts
207
Reaction score
268
Location
Kansas CIty, MO
First Name
Matthew
Truck Year
1983
Truck Model
Suburban K10
Engine Size
454
  • Its damn close....i would NEVER....but, it could be forced. That big comes down on the outside edged of the cap where in pointing.
    You must be registered for see images attach
    You must be registered for see images attach
    You must be registered for see images attach
    You must be registered for see images attach
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
  • Its damn close....i would NEVER....but, it could be forced. That big comes down on the outside edged of the cap where in pointing.
    You must be registered for see images attach
    You must be registered for see images attach
    You must be registered for see images attach
    You must be registered for see images attach

Honestly, you already have a scoop riveted into the hood, so I would either cut out a recess or hammer it down. Cutting it out would probably be better for clearance and I wouldn't think it would hurt strength in that location.
 

83Burban

Full Access Member
Joined
Apr 10, 2021
Posts
207
Reaction score
268
Location
Kansas CIty, MO
First Name
Matthew
Truck Year
1983
Truck Model
Suburban K10
Engine Size
454
@Bextreme04

Smh...yeah...im not a fan, I most def did not do that. It , serves zero purpose and looks a little silly IMHO. I think they look tough enough from the factory.

Maybe could be made to serve a purpose? Im sure there is a good thread on such things.

Time to get the grinder out....
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
@Bextreme04

Smh...yeah...im not a fan, I most def did not do that. It , serves zero purpose and looks a little silly IMHO. I think they look tough enough from the factory.

Maybe could be made to serve a purpose? Im sure there is a good thread on such things.

Time to get the grinder out....

Lol... not trying to hate, just pointing out that you wouldn't be destroying a mint condition OEM hood. The newer hoods are much easier to find anyways, so I wouldn't feel too bad about a little "clearancing", especially if you cut out just the inner skin cleanly. Keep the cut out part and it could even be patched back in fairly easily in the future.
 

Snoots

Full Access Member
Joined
Jan 23, 2013
Posts
8,751
Reaction score
18,198
Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350 w/203
Get a different rad cap.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Get a different rad cap.

I'm betting that wont solve it. Maybe try taking the whole cap off and see if it closes? That would verify whether you could solve it with a cap or whether you need to modify the hood no matter what.
 

83Burban

Full Access Member
Joined
Apr 10, 2021
Posts
207
Reaction score
268
Location
Kansas CIty, MO
First Name
Matthew
Truck Year
1983
Truck Model
Suburban K10
Engine Size
454
I tried 3 different caps I had laying around. None solved it. The cut out did. Shuts cleanly. I'll dress the cut and get it painted. What are they using to glue the support to the hood? Figured I could re attach. Either side.
You must be registered for see images attach
 

83Burban

Full Access Member
Joined
Apr 10, 2021
Posts
207
Reaction score
268
Location
Kansas CIty, MO
First Name
Matthew
Truck Year
1983
Truck Model
Suburban K10
Engine Size
454
Been wasing fuel in the drive for about 45min now....Staying cool
You must be registered for see images attach
Interior temp gage in intake reading similar.
 

83Burban

Full Access Member
Joined
Apr 10, 2021
Posts
207
Reaction score
268
Location
Kansas CIty, MO
First Name
Matthew
Truck Year
1983
Truck Model
Suburban K10
Engine Size
454
xc_hide_links_from_guests_guests_error_hide_media
 

83Burban

Full Access Member
Joined
Apr 10, 2021
Posts
207
Reaction score
268
Location
Kansas CIty, MO
First Name
Matthew
Truck Year
1983
Truck Model
Suburban K10
Engine Size
454
xc_hide_links_from_guests_guests_error_hide_media

Big smiles.....

Still need to tune carb....can finally do that now that it can idol.
 

Latest posts

Forum statistics

Threads
44,164
Posts
950,702
Members
36,277
Latest member
chevyBlu
Top