250-6 ?'s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mekobes44 · 08-06-2008, 02:48 PM

I have an 83 c-10 with a 250 w/integral head and a 4 speed, I'm thinking of having it rebuilt, what are some easy performance upgrades to do to it if i do have it redone. Are there parts for the 250? O i can pick up a 92 firebird with a 305 and auto trans for $200 would this be a better route

D13 · 08-06-2008, 03:03 PM

Define better. It takes considerable work to put a FI V8 / auto in place of an L6/stick. Seach thru the board and you will find a lot of help. Depending on the 4 speed, it may not be difficult to put a carbed 350 or 305 in (it would take about $500 to do it here - 350's are cheap). Lots more HP at the price of fuel economy.

For the 250, with an integral head, there's not much basic you can do. If you change heads there are a lot of things you can do depending on what you want and $.

#1, buy Leo Santucci's book.

Easy upgrade, 307 pistons, little more cam, some rear gears are a big help.

More $, earlier head, aftermarket intake an headers, carb, etc.

More $, EFI.

At this point, the cost of a mild 350 will be a lot less than your next steps with the L6.

Don't get me wrong, I love 250's. But I drive like a little old lady and have no interest in dragging my old trucks or being able to boast about a bazillion HP. I just like to cruise at 62MPH in a big comfortable seat.

ca180 · 08-06-2008, 07:17 PM

I had the integrated head 250 in my truck... one good overheat left it with a 1 inch crack... Not fun.

The 350 transplant was easy, it was my first but I had a good idea of what I was doing and lot of experienced friends.

350 has been more fun for me. The six market never seemed to be much and is probably on its way out. Good luck though in whatever you decide to do.

**old Rusty C10** · 08-06-2008, 09:21 PM

the thing i would do is to get rid of the intergral head the regular kind were so much better and the seldom cracked when overheated

slash crashley · 08-06-2008, 11:38 PM

i've got an 82 with the 250 not sure if it's the integral head.

i wanted to build on it, but i may just drive it the way it sits with some headers and fresh exhaust. there's only so much scratch to go around and it runs like a top.

dswancutt · 08-06-2008, 11:53 PM

if it's an 83 and the original engine, it's the integral head. No option for headers if I recall.

manimal · 08-07-2008, 01:17 AM

Stick with the 6. I just pulled the 350 from my '75 and put in a 292 6cyl. Check out inliners.org, They have PLENTY of info there. Good luck. If your state emissions dont require you to have "ORIGINAL" equipment, then change to the NON integral head,intake and exhaust, and enjoy the six. EVERYWHERE you look, there is a V8......JMO
-Lance

Mr79C10 · 08-07-2008, 05:55 PM

I agree w/D13
just trans plant a V8, the cost is much better.
And as for a L6 with an intergrated head ( like mine) nothing you can really do to it, unless you get a head thats not intergrated. then you have options,

mekobes44 · 08-07-2008, 06:55 PM

i can get a 250 from a 65 pickup would this be a better engine to rebuild

Mr79C10 · 08-07-2008, 06:59 PM

Quote:

Originally Posted by mekobes44

i can get a 250 from a 65 pickup would this be a better engine to rebuild

Yes if it is a NON intergrated head.
you can do manifolds, carbs X2 and headers. A hole mess of things ya can do.

manimal · 08-08-2008, 12:49 AM

Keep The Six!

**mark69** · 08-11-2008, 04:36 PM

Keep the six...

dhughins · 08-11-2008, 05:02 PM

i have a 79 with the same engine. i am currently looking for a v8 to drop in. this is a project truck not my daily driver so when i drive it i want to have fun. with the stock i6 around 150hp? not real fun

manimal · 08-12-2008, 02:27 PM

KEEP THE SIX! Easier to work on and there are aftermarket parts for them. Checkout the write ups at inliners.org
-Lance

08-06-2008, 03:03 PM	#2
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: 250-6 ?'s Define better. It takes considerable work to put a FI V8 / auto in place of an L6/stick. Seach thru the board and you will find a lot of help. Depending on the 4 speed, it may not be difficult to put a carbed 350 or 305 in (it would take about $500 to do it here - 350's are cheap). Lots more HP at the price of fuel economy. For the 250, with an integral head, there's not much basic you can do. If you change heads there are a lot of things you can do depending on what you want and $. #1, buy Leo Santucci's book. Easy upgrade, 307 pistons, little more cam, some rear gears are a big help. More $, earlier head, aftermarket intake an headers, carb, etc. More $, EFI. At this point, the cost of a mild 350 will be a lot less than your next steps with the L6. Don't get me wrong, I love 250's. But I drive like a little old lady and have no interest in dragging my old trucks or being able to boast about a bazillion HP. I just like to cruise at 62MPH in a big comfortable seat. __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors Last edited by D13; 08-06-2008 at 03:05 PM.

08-06-2008, 07:17 PM	#3
ca180 tryin to get laid Join Date: Aug 2008 Location: OK Posts: 198	Re: 250-6 ?'s I had the integrated head 250 in my truck... one good overheat left it with a 1 inch crack... Not fun. The 350 transplant was easy, it was my first but I had a good idea of what I was doing and lot of experienced friends. 350 has been more fun for me. The six market never seemed to be much and is probably on its way out. Good luck though in whatever you decide to do.

08-06-2008, 09:21 PM	#4
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	Re: 250-6 ?'s the thing i would do is to get rid of the intergral head the regular kind were so much better and the seldom cracked when overheated __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

08-06-2008, 11:38 PM	#5
slash crashley lucky knuckles Join Date: Nov 2007 Location: orlando, florida Posts: 124	Re: 250-6 ?'s i've got an 82 with the 250 not sure if it's the integral head. i wanted to build on it, but i may just drive it the way it sits with some headers and fresh exhaust. there's only so much scratch to go around and it runs like a top.

08-06-2008, 11:53 PM	#6
dswancutt Registered User Join Date: Jul 2003 Location: Franklin, NE Posts: 387	Re: 250-6 ?'s if it's an 83 and the original engine, it's the integral head. No option for headers if I recall.

08-06-2008, 02:48 PM	#1
mekobes44 Registered User Join Date: Mar 2004 Location: Lillington, NC Posts: 19	250-6 ?'s I have an 83 c-10 with a 250 w/integral head and a 4 speed, I'm thinking of having it rebuilt, what are some easy performance upgrades to do to it if i do have it redone. Are there parts for the 250? O i can pick up a 92 firebird with a 305 and auto trans for $200 would this be a better route

08-07-2008, 01:17 AM	#7
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: 250-6 ?'s Stick with the 6. I just pulled the 350 from my '75 and put in a 292 6cyl. Check out inliners.org, They have PLENTY of info there. Good luck. If your state emissions dont require you to have "ORIGINAL" equipment, then change to the NON integral head,intake and exhaust, and enjoy the six. EVERYWHERE you look, there is a V8......JMO -Lance __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

08-07-2008, 05:55 PM	#8
Mr79C10 It Is What It Is,,,, Join Date: Aug 2006 Location: The Gun Shine StateFlorida* Posts: 1,765	Re: 250-6 ?'s I agree w/D13 just trans plant a V8, the cost is much better. And as for a L6 with an intergrated head ( like mine) nothing you can really do to it, unless you get a head thats not intergrated. then you have options, __________________ 79 C10 Short Box ST8 6 bang'r Lowered w/ 3" Control arms, 2" Lower Coils and 4" shackles and hangers W/ FLIP KIT __--__* 79 C-10 project* .........................__ ..............._____ l __\___ ..............\|_(O)_ \|___(O) ] FAQ INDEX Thread The Kulture My Rat Den

08-07-2008, 06:55 PM	#9
mekobes44 Registered User Join Date: Mar 2004 Location: Lillington, NC Posts: 19	Re: 250-6 ?'s i can get a 250 from a 65 pickup would this be a better engine to rebuild

08-08-2008, 12:49 AM	#11
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: 250-6 ?'s Keep The Six! __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

08-11-2008, 04:36 PM	#12
mark69 I'm back did you miss me? Join Date: Jul 2006 Location: New Jersey Posts: 60	Re: 250-6 ?'s Keep the six... __________________ 1984 C10 Shorty 250 Inliner 1969 Custom Camper/20 GONE(but not forgotten). 1976 C20 with 292L6 36K original miles now 41K. SOLD 87 Chevy P30 stepvan 6.2L diesel 140K (SOLD)

08-11-2008, 05:02 PM	#13
dhughins Registered User Join Date: Aug 2007 Location: ozark, al Posts: 583	Re: 250-6 ?'s i have a 79 with the same engine. i am currently looking for a v8 to drop in. this is a project truck not my daily driver so when i drive it i want to have fun. with the stock i6 around 150hp? not real fun

08-12-2008, 02:27 PM	#14
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: 250-6 ?'s KEEP THE SIX! Easier to work on and there are aftermarket parts for them. Checkout the write ups at inliners.org -Lance __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

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