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 10-13-2005, 05:38 PM   #1
68crum
Proud owner of a P.O.S.
 
Join Date: Oct 2005
Location: little rock, Ar
Posts: 72
250 Need Power!!!

anyone know of any good ways to get more power out of a 250?
68crum is offline   Reply With Quote
Old 10-13-2005, 05:40 PM   #2
pjmoreland
Senior Member

 
pjmoreland's Avatar
 
Join Date: Jan 2005
Location: CA
Posts: 5,426
http://cliffordperformance.net/
pjmoreland is offline   Reply With Quote
Old 10-13-2005, 05:55 PM   #3
Fred T
Cantankerous Geezer
 
Fred T's Avatar
 
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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.
__________________
Fred

There is no such thing as too much cam...just not enough engine.
Fred T is offline   Reply With Quote
Old 10-13-2005, 07:58 PM   #4
70 shorty
Where's my beer?
 
70 shorty's Avatar
 
Join Date: Oct 2004
Location: Glen Allen, VA
Posts: 1,768
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.
__________________
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
70 shorty is offline   Reply With Quote
Reply

Bookmarks


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 -4. The time now is 09:57 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com