The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-10-2008, 05:23 AM   #1
tkeduk8r
Senior Member
 
tkeduk8r's Avatar
 
Join Date: Apr 2001
Location: Alexandria, MN
Posts: 1,266
If youve had questions about integral vs. non-integral head inline 6's w/pics

Well I tried a post about this as a response to a post a few days back, but I figured I'd try to contribute a bit to the board instead of take so here goes.... I just happen to have both versions of the inline 6's in the shop right now, pulled and on engine stands... the orange and forst one Ill post pics of is a 1966-67 non-integrated intake 250 (like most of us have) with a power steering unit off of a 73 chevelle that I had laying around. This is representative of what the sixes in the 67-72 range would have had in them.

The second group of pics is an integrated intake 250 that I recently pulled from an 82 C10... This also has power steering on it, but the brackets are very different and will not interchange between the two (as illustrated). The integrated heads were standard on trucks beginning around '78 and have had a reputation for cracking, so they are popularly viewed as undesirable. I however have had good luck with both the integrated 250's I have owned and I think the updated technology in the carb (2BBL) and the exhaust (dual outlet) make them better performers (in stock condition vs. there older non integrated counterparts) and better at the gas pumps (i routinely got 17-19 mpg on 55 mpg trips in my 80 K5 blazer in the 90's).

Well here are the first group of pice of the NON-integrated intake 250. Notice the conventional valve cover and the single barrel Rochester Monojet. There are single bolts, threaded perpindicular to the pushrods, with unique retainers that clamp both the intake and exhaust manifold to the head.
Attached Images
     
__________________
63 C20 2WD, 230/SM420/4.11 73K
68 C30 dump truck, 327,SM425,4.56 66K original
68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes
68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79
69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi...
70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP
72 C20 Cheyenne Super, 402/400/3.54 puller FOR SALE
72 Chevy K20 4x4 350/350/205/4.56 donor
72 Vette 350/M21/3.70 posi, triple black and super fast
tkeduk8r is offline   Reply With Quote
Old 03-10-2008, 05:28 AM   #2
tkeduk8r
Senior Member
 
tkeduk8r's Avatar
 
Join Date: Apr 2001
Location: Alexandria, MN
Posts: 1,266
Re: If youve had questions about integral vs. non-integral head inline 6's w/pics

NON Integrated 250 pics continued..... These illustrate the power steering brackets used on these style engines. I pulled this set up off a 73 chevelle and there must be a slight difference in water pump length simialr to the small blocks of the era because there is not enough stud length on the waterpump as well as the fan bolt spacing is a slightly smaller diameter than the older 230-250's....
Attached Images
    
__________________
63 C20 2WD, 230/SM420/4.11 73K
68 C30 dump truck, 327,SM425,4.56 66K original
68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes
68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79
69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi...
70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP
72 C20 Cheyenne Super, 402/400/3.54 puller FOR SALE
72 Chevy K20 4x4 350/350/205/4.56 donor
72 Vette 350/M21/3.70 posi, triple black and super fast
tkeduk8r is offline   Reply With Quote
Old 03-10-2008, 05:37 AM   #3
tkeduk8r
Senior Member
 
tkeduk8r's Avatar
 
Join Date: Apr 2001
Location: Alexandria, MN
Posts: 1,266
Re: If youve had questions about integral vs. non-integral head inline 6's w/pics

Here is the INTEGRATED INTAKE 250 pulled from the 82 C10. The easiest ways to ID these are the valve cover that varies in height along with the four pollution control vents into the high sides of the cover, and dual outlet exhaust pipes. These come with a "staggered" 2 barrell carb as well. Notice the bolts that thread parallel to the pushrods clamping the exhaust manifold to the intake. The power steering set up came on this particular engine OEM (1982 for this one). This particular truck was also optioned with AC but the compressor and upper brackets were removed before I got the truck...
Attached Images
     
__________________
63 C20 2WD, 230/SM420/4.11 73K
68 C30 dump truck, 327,SM425,4.56 66K original
68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes
68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79
69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi...
70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP
72 C20 Cheyenne Super, 402/400/3.54 puller FOR SALE
72 Chevy K20 4x4 350/350/205/4.56 donor
72 Vette 350/M21/3.70 posi, triple black and super fast
tkeduk8r is offline   Reply With Quote
Old 03-10-2008, 05:39 AM   #4
tkeduk8r
Senior Member
 
tkeduk8r's Avatar
 
Join Date: Apr 2001
Location: Alexandria, MN
Posts: 1,266
Re: If youve had questions about integral vs. non-integral head inline 6's w/pics

I hope this helps and if you have any other requests fro pics let me know and I can shoot them for you... I wont be needing these for my autos class for quite some time so they will remain complete for the time being.... Lemme know....
--Mike
__________________
63 C20 2WD, 230/SM420/4.11 73K
68 C30 dump truck, 327,SM425,4.56 66K original
68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes
68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79
69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi...
70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP
72 C20 Cheyenne Super, 402/400/3.54 puller FOR SALE
72 Chevy K20 4x4 350/350/205/4.56 donor
72 Vette 350/M21/3.70 posi, triple black and super fast
tkeduk8r is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:28 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com