250ci

  1. M

    Building a Street Motor — Ford Inline Six Performance Guide

    Overview We get numerous questions each week asking how to build up a Ford inline six, so this tech article covers our recommendations from the ground up. This information is intended as a basic guideline for building a daily driver, a weekend cruiser, or an all-out performance engine. There...
    • MrDuck1966
    • Article
    • 14 min read
    • 200ci 250ci build guide camshaft cylinder head engine build inline six performance short block
    • Category: Magazine Articles
  2. M

    Ford Inline Six Camshaft Specifications: Clay Smith Cam Comparison

    Overview This article provides detailed camshaft specifications for the Ford inline six (170/200/250ci) engine family, with a focus on the Clay Smith cam lineup previously available through Classic Inlines. These specifications include part numbers, lift values at multiple rocker arm ratios...
    • MrDuck1966
    • Article
    • 6 min read
    • 200ci 250ci cam specs camshaft clay smith inline six solid lifter valvetrain
    • Category: Fuel Injection
  3. M

    Ford Inline Six: Frequently Asked Questions

    Introduction These are the most frequently asked questions about Ford inline six engines — the 144, 170, 200, and 250 cubic inch family. Whether you're brand new to the inline six world or returning after a long absence, this FAQ covers the foundational decisions and modifications that define a...
    • MrDuck1966
    • Article
    • 9 min read
    • 200ci 250ci camshaft carburetor faq headers ignition inline six t5 swap
    • Category: Magazine Articles
  4. M

    Ford Inline Six Trouble Shooting Guide

    Introduction This trouble shooting guide covers the most common problems encountered with Ford inline six engines (144, 170, 200, 250, and 300 cubic inch). Whether you're dealing with a no-start condition, rough idle, miss under acceleration, or oiling issues, work through the relevant section...
    • MrDuck1966
    • Article
    • 7 min read
    • 200ci 250ci 300ci carburetor diagnosis engine ignition inline six troubleshoot tuning
    • Category: Magazine Articles
  5. J

    ENDED Selling 250/4.1L Block, Head, Pistons NO LONGER FOR SALE

    I am currently selling a 250ci block, and the associated head, pistons, valve cover, oil pan, crank shaft and camshaft. I will supply all the other parts as well (oil pump, fuel pump, newly purchased water pump, etc). I live in the City of St Louis on the southside (Bevo Mill). Anyone interested...
  6. Bronco Roadster

    Wanted 250ci engine (good shape) needed

    I need a viable 250ci engine. Rebuilding mine which has a broken camshaft and damaged lifters seems cost prohibitive. I had earlier posted this need in the wrong section as I am new to this forum. My family owns 3 six cylinder Ford Broncos.
  7. J

    All Small Six 4.1 250ci cam recommendations

    I'm picking up a 5-speed '88 XF Falcon (carb) and looking to do some head work. I want to give it a real lumpy note but keep it simple—just a cam and springs that won't require any machining. What are some good cam and spring recommendations for a stock 4.1 Crossflow? Also, is there anything...
  8. M

    Alternator Misalignment - Next Steps??

    76' maverick - i6 250 w/AC (links in paragraph to parts used) I have had issues with wearing/squealing/snapping on my V-belt connected to my alternator/water pump/harmonic balancer pulley. I recently replaced the water pump, water pump pulley, and alternator. The water pump and harmonic...
  9. M

    250ci Alternator Misalignment - Next steps??

    76' maverick - i6 250 w/AC (links in paragraph to parts used) I've had a problem with V-belts wearing and snapping. I replaced a warped pulley and water pump shaft as well as got a new alternator. I am now realizing my alternator pulley is misaligned to the water pump and harmonic balancer...
  10. Crustang to Mustang

    250ci Crossflow Head on a Pre-Crossflow 250ci HP Gain

    What is the performance gain of bolting a crossflow head on a pre-crossflow block?
  11. Crustang to Mustang

    All Small Six "Raisin' Hood"

    I have about a 1/2 in. of clearance between my stock 250ci and my '66 Mustang hood. Solutions?
  12. Crustang to Mustang

    All Small Six Are Twin Turbos Too Much?

    I really want to get some dual outlet headers for my 250ci but I wouldn't be able to run a single turbo with 2 pipes (tell me if I'm wrong). So I got to thinking. If I got the dual outlet manifold from Aussiespeed and installed dual 2bbl carbs, could I twin turbo a 250ci or would I blow the engine?
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