The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)

- - 250 c.i.d. (https://67-72chevytrucks.com/vboard/showthread.php?t=246273)

grabiel

06-20-2007 04:46 PM

250 c.i.d.

When were 250 cu.in used in chevys, I recently bought one to put in a 54. The guy said that it came out of a 1983 van. How can I tell and why do some have 16 bolts in oil pan and some 24? what's the difference.

Captkaos

06-20-2007 04:52 PM

Re: 250 c.i.d.

1966-1984 when the Vortec 4.3L V6 replaced it.
I would have to check on the pan bolts as I don't know.

jchav62

06-20-2007 06:46 PM

Re: 250 c.i.d.

Some of the later 250's had an integrated head where the head and the intake were one unit, I believe. Is yours like that?

grabiel

06-21-2007 05:33 PM

Re: 250 c.i.d.

what year did the intergrated heads start?

Captkaos

06-21-2007 06:15 PM

Re: 250 c.i.d.

Integrated head started in 1975.

Mr79C10

06-24-2007 06:09 AM

Re: 250 c.i.d.

Quote:

Originally Posted by jchav62 (Post 2231359)

Some of the later 250's had an integrated head where the head and the intake were one unit, I believe. Is yours like that?

My L6 250 is like that,, makes it kinda hard to do bolt on's. like a header.

mark69

06-26-2007 01:44 PM

Re: 250 c.i.d.

Quote:

Originally Posted by Captkaos (Post 2232933)

Integrated head started in 1975.

I thougt they started in 77, my 76 C20 with 30K original miles (even had the original bias ply tires) has separate head and exhaust.

Captkaos

06-26-2007 01:57 PM

Re: 250 c.i.d.

Quote:

Originally Posted by mark69 (Post 2239163)

I thougt they started in 77, my 76 C20 with 30K original miles (even had the original bias ply tires) has separate head and exhaust.

Yours would be a 292 inline 6 if it is original. 250's were only available on the 1/2T.

mark69

06-26-2007 02:06 PM

Re: 250 c.i.d.

Quote:

Originally Posted by Captkaos (Post 2239177)

Yours would be a 292 inline 6 if it is original. 250's were only available on the 1/2T.

I thought they put the 292's in the 1/2 T's too, called em a heavy duty?...if not sorry my bad...

Captkaos

06-26-2007 09:23 PM

Re: 250 c.i.d.

Quote:

Originally Posted by mark69 (Post 2239188)

I thought they put the 292's in the 1/2 T's too, called em a heavy duty?...if not sorry my bad...

You are correct, you could get a 292 in a C10 1/2T, but you couldn't get a 250 in a C20 3/4T and up...

He is asking about the 250cid. 292's never came with integrated heads.

All times are GMT -4. The time now is 06:00 PM.