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BBC headers? #712939
August 12th 2016 9:28 pm
August 12th 2016 9:28 pm
Joined: Mar 2011
Posts: 360
NY
J
jcd74 Offline OP
enthusiast
jcd74  Offline OP
enthusiast
J
Joined: Mar 2011
Posts: 360
NY
Has anyone successfully found a set of big block headers that work? Just got '89 Chevy with 454. searching online gets me no where.

Re: BBC headers? [Re: jcd74] #712943
August 12th 2016 10:28 pm
August 12th 2016 10:28 pm
Joined: Jun 2010
Posts: 14,831
Van Diego California
frscke1 Offline
frscke1  Offline

Joined: Jun 2010
Posts: 14,831
Van Diego California
Headers dont fit with a 454.

Originally Posted by Lordmodelbuilder
Need to find someone that has a 3rd gen. GM van with the shorty headers on it. I tried to use shorty center-dump headers on my 454 & they would not work.


There just isnt enough room for headers.


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: BBC headers? [Re: jcd74] #719454
January 31st 2017 8:42 pm
January 31st 2017 8:42 pm
Joined: Mar 2011
Posts: 360
NY
J
jcd74 Offline OP
enthusiast
jcd74  Offline OP
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J
Joined: Mar 2011
Posts: 360
NY
OK so Flowtech #11530FLT fits for the record. IT's a 89 G30 with a factory fit Big block. Hope the video post, I'm not good at it.
[img]http://i1082.photobucket.com/albums/j377/jcd74/th_20170129_155657_0011.mp4[/img]

Re: BBC headers? [Re: jcd74] #719455
January 31st 2017 8:44 pm
January 31st 2017 8:44 pm
Joined: Mar 2011
Posts: 360
NY
J
jcd74 Offline OP
enthusiast
jcd74  Offline OP
enthusiast
J
Joined: Mar 2011
Posts: 360
NY
Fit so well that I left in the plugs, only broke one removing the manifolds. The factory heat shields even fit.

Re: BBC headers? [Re: jcd74] #719456
January 31st 2017 8:44 pm
January 31st 2017 8:44 pm
Joined: Mar 2011
Posts: 360
NY
J
jcd74 Offline OP
enthusiast
jcd74  Offline OP
enthusiast
J
Joined: Mar 2011
Posts: 360
NY

Re: BBC headers? [Re: jcd74] #751675
August 17th 2019 3:03 pm
August 17th 2019 3:03 pm
Joined: Aug 2019
Posts: 3
MI
G30CamperLance Offline
stranger
G30CamperLance  Offline
stranger
Joined: Aug 2019
Posts: 3
MI
Hey guys!
I just put headers on my 78 G30 Ambulance with the 400ci engine.
I know that the 400ci is right in between big and small block so I am not sure if it will be the same for a 454 but its worth a shot
I ended up going the route of the Hedman headers, shorty plugs, and paint.

Anyway, I filmed the whole thing so if links work here you can see how I did it.
Its a 3 part video, I posted the last part here because its the most interesting but the others are out there if you need them
Hope someone finds this helpful!
https://youtu.be/C2uqP5ij9kU
If the link doesn't work, just look for the YouTube channel: JeepSheepTV

Re: BBC headers? [Re: jcd74] #751676
August 17th 2019 3:26 pm
August 17th 2019 3:26 pm
Joined: Feb 2016
Posts: 993
Portland, OR
Deathorvictory Offline
old hand
Deathorvictory  Offline
old hand
Joined: Feb 2016
Posts: 993
Portland, OR
400ci should still their small block platform.


1979 Dodge B200 Shorty, 1987 B250 Longy
Re: BBC headers? [Re: G30CamperLance] #751721
August 19th 2019 8:34 am
August 19th 2019 8:34 am
Joined: Oct 2015
Posts: 367
Beaufort, SC USA
NEmery Offline
enthusiast
NEmery  Offline
enthusiast
Joined: Oct 2015
Posts: 367
Beaufort, SC USA
Originally Posted by G30CamperLance

I know that the 400ci is right in between big and small block so I am not sure if it will be the same for a 454 but its worth a shot



The chevy 400ci is a small block casting, but with Siamesed cylinders. Dimensionally, the block is the same as a 350...and the heads are the same (except they have some vent holes or something for cylinder cooling), Therefore the headers for a 265, 283, 302, 305, 307, 327, 350, and 400 are the same. Chevy did have a 402 Big Block that was a 0.030" over 396 casting, I think it was only produced in 1970...but for sure no later than 1972, and never came in a van.

Re: BBC headers? [Re: jcd74] #751761
August 20th 2019 2:04 pm
August 20th 2019 2:04 pm
Joined: Feb 2018
Posts: 140
Cedar Rapids, Iowa
Just4fun1991 Offline
member
Just4fun1991  Offline
member
Joined: Feb 2018
Posts: 140
Cedar Rapids, Iowa



Hey JCD74

You may want to look into IMGUR.

It is like Photobucket, but FREE / EASY TO USE /


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