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04-03-2013, 12:16 AM
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#1 |
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Registered User
Join Date: Mar 2013
Location: Midlothian va
Posts: 17
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Advice on 250 6 cylinder build
As part of my 77 C-10 project, I will be rebuilding the original 250 engine. In addition to the normal overall, I want to up the performance factor. I am thinking head work to increase compression to 9 to 1, three angle valve job, aftermarket cam, carb upgrade and headers. Has anyone done something similar? I realize dropping in a small block would be easier, but I want to do something a little different. Any thoughts or advise/suggestions? Would the results justify the effort and expense?
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04-03-2013, 12:29 AM
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#2 |
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MOTORHEAD!
Join Date: May 2000
Location: Devon AB, Canada
Posts: 849
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Re: Advice on 250 6 cylinder build
This may be your new favourite website
http://www.cliffordperformance.net They'll have everything you want and need! Posted via Mobile Device
__________________
82 GMC High Sierra VortecPro 496 12 Bolt, 3.42's AFR 265 Holley 850 Performer RPM Air Gap Hooker 2455's TCI Turbo 400 Super Street Fighter TRRC 12 Bolt Eaton Posi Mark Williams Axles Cal-Tracs Hoosier 30x10.5 Radial Slick Full weight long box pickup Current best- 11.33@117mph |
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04-03-2013, 01:33 AM
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#3 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: Advice on 250 6 cylinder build
Cam will wake it up for sure
Posted via Mobile Device
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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04-03-2013, 01:58 AM
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#4 |
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Registered User
Join Date: May 2012
Location: murfreesboro, TN
Posts: 743
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Re: Advice on 250 6 cylinder build
It really doesn't take much to get a lot of power out of these
I have a 250 In my 70 Biggest cam with some roller lifters, Made a adapter for the two barrel carb and I'm kickin aprox 250-300hp They are great engines and are often underestimated with power and design I you can run more than one carb or a four barrel for better fuel/air mixture you will be set Oh and I almost forgot!! I get 25 mpg Posted via Mobile Device
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 "its not a hobby, It's a Lifestyle". bagged and soon to be bodied 70 longbed http://67-72chevytrucks.com/vboard/s...d.php?t=564028 |
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04-03-2013, 06:25 AM
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#5 |
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Registered User
Join Date: Feb 2007
Location: Memphis MI
Posts: 1,851
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Re: Advice on 250 6 cylinder build
1. You will spend a lot more money for less HP on the six. BUt it's cool.
2. Search for 250 build in this and the Engines sections. 3. Google and join Inliners. 4. Buy Leo Santucci's book, 2nd edition. A must have. 307 pistons or Ross forged pistons from Tom Lowe, cast headers from Langdon, Clifford or Offy intake, cam that matches your RPM range. Next step - turbo.
__________________
1987 2 ton  1982 250/TH350 beater in progressDad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrappingPlus a mess o' tractors |
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