I think Im ok with wrist pin clips. I have fitted thousands of the things in my 30 years as a professional engine builder :-)  It would be just my luck however if I accidentally misfitted one it would be on my own engine! Looking forward to putting it together, just waiting for a shipment of parts from John Mummert :-)

Mike: we've heard before about wrist pin clips coming loose. Not a place to make a mistake!. The new ones need to be properly seated.. Good luck.


Paul

Thankyou, I appreciate your help friend. I have already ordered the E4 now, mainly because I can get one here quicker. I spoke to mummert about the E4, he said it work fine in my application and offered some advice about dialling it in. Thankyou everyone for your input, Im learning lots and lots about Y blocks :-)

cliff( in vancouver,i would donate a core,just pay for the grind and frt,shiping to uk easey

Edited because the message was entered as tags - Charlie

If that engine pulled it without a problem then a good stock rebuild should be fine. I wouldn't be afraid of using the E4 cam in it.

Thanks Meteor, unfortunately I live in the UK, it gets expensive posting bits about all over the world. I just want a cam that's close enough to stock. 
Yeah 57ranchero, I have been towing with this car for 12 years, it pulls the caravan no problem. I only pulled the engine because I was having radiator problems, too much pressure kept splitting the top tank of the rad, suspected a head gasket but in fact one of the heads was cracked. Thought I'd give the motor a refresh but found it was 80 thou overbored, badly scored cylinders which looks like a previous seizure and had just had new pistons donked in. Only half the valves were seating, the cam was worn out and had a crack in one cylinder, fortunately it was radial and not into the water jacket, it was at the head bolt side of the bore, looks like its had a wristpin escape in the past and badly damaged the cylinder wall. We have repaired the crack and sleeved the block back to standard.

Thanks for the reply Paul. Im just replacing the cam as part of a full rebuild. The old cam is pitted and worn. Not really seeking performance just looking for a close to original spec cam.

There are a lot of things to consider when building for towing.
How much does the caravan weigh?
What trans and rear gears?
What speeds and RPM will it be running at? Is it going 60 mph on the flat road or 30 mph climbing mountain grades, etc, etc. Good luck..

the57 ford merc 312 grind which was quoted is avail. in vancouver canada,colt cams or shadbolt cams,regrind is 150 canadian,he also will reface lifters. i have used shadbolt for years with (never a failure),most of the cams wher 3208 cat truck engine (flat tappet).  colt cams have better access as they ar close to the us border. i have some nice cores i could trade for yours that would speed up the turnaround.my cores are groved for rocker lube.colt refaces lifters as well.colt cames alsodoes dodge cummins cams with his own blanks,cast in the us to ther spec. if you live near the west border email me will get you phone #s. colt will work best as he ships a lot to the us. cliff ct1940@shaw.ca

Are you just replacing the edb cam as part of the rebuild or because you definately want a bit more performance?  Reason for asking is, that while the 1957 edb grind isn't available from most cam suppliers, including Mummert, it is from Oregon Cams in Vancouver Washington. They can grind it from a brand new core or as a regrind. Last year their price for a new one was about $149.00.. Lifters are of course extra.   


Paul