best options?

True in your case! Not Parkwoods and not on my purchase of the above 4.1 Fairlane Turbo 250 X-flow block, though, even the forged rods can come in contact with the cam, and they do in extra heavy duty work.

The small Ford I6 Its an interference engine like a pop top piston Hemi or a OHC engine when the cam timing slips or is advanced.
 
Wow! Yeah, I hope to never have to deal with a rod sticking out of my block. I’ll be purchasing a mild cam (the one rbohm suggested). I’ve almost got the carb adapter finished, just need to know if I should worry about tapping some holes into it for a vacuum line or whatever they are for on the old stock adapter. Anybody know what I’m talking about? Should I not worry about it?
 
It might be a good idea to drill it for the passage and tap it for a hose type fitting that way you could use it or plug it as needed. The stock carb adapter fitting was used to hook up a PCV to valve cover it's usually a good idea to have one installed. So it all depends on if you will be using one and or which carb you you use or plan to use some might have the PCV hook up on them too. Good luck. :nod:
 
JackFish":2hnbjuu2 said:
The problem with mine was not the rods, Dean. The cam was relieved in a different spot than the stock cam.
stockrelief01.jpg

4relief01.jpg


Note well viewtopic.php?f=1&t=66057&p=506301#p506301
CZLN6":2hnbjuu2 said:
.....
The 250 cams were all the same. Timing gears changed for the '73 and later 250s- again to advance the cam timing to favor low end torque. The lift on the 250 cams is .368". The 250 cam was raised in the block as well as scalloped to clear the rod journals. Some factory 200 cams are scalloped, but not all. Take note and compare the 200 cam to the 250 to make sure it has the scallops or you will have interference.

IF the 200 cam has clearance scallops you can use it in the 250. The specs are not the same.....


Adios, David
 
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