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#1 |
Proud owner of a P.O.S.
Join Date: Oct 2005
Location: little rock, Ar
Posts: 72
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250 Need Power!!!
anyone know of any good ways to get more power out of a 250?
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#2 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,543
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#3 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Start by getting the book Chevrolet Inline Six-Cylinder Power Manual by Leo Santucci. Most any on-line bookstore has it. There's also a lot of good info at www.inliners.org .
First on my list would be to make it breath better. Stock is under carbed and the exhaust is restricted. Dual carbs and a split exhaust will be a big help. Also an electronic ignition, if you don't have it already. After that you get into cams and head work.
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#4 |
Where's my beer?
Join Date: Oct 2004
Location: Glen Allen, VA
Posts: 1,772
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My 250 moves pretty damn good, but it's nowhere near stock. It runs 9.0 to 1 compression, .40 over, Clifford intake, a Holley 390 4 barrel, ported head, and an RV type cam with a header and dual exhaust. It's also been converted to HEI. I can surprise more than a few v8 owners. My truck was built by my uncle before I got it, but feel free to PM me and I'll try to answer any questions I can.
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70 C10, shortstep, .30 over 250,Hurst shifted 3 spd parts hauler. Holley 390, Clifford Intake, Header, ported cylinder head, unknown bigger cam. 79 Corvette L82, 4 spd, black, red interior, headers, flowmasters, and unkown bigger cam. '03 Grand Cherokee Laredo, 4.0 4x4 daily driver. 165K miles, and runs great '08 Tahoe LTZ 4x4 155K |
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