I took the A/C and power steering off of my Comet when I installed the 351. Like yours, the belt drive was a problem. I ended up finding a water pump pulley on a F350 truck (probably mid-70s) that had two grooves and that worked out fine using the crank pulley from the 302, the forward groove of the new WP pulley, and running to the alternator. Hope this helps someone ... it was a real head-scratcher at the time for me.
The pump groove is block side from the alt groove.I think ill look at a diff pulley or end up fabbin a idler. Blue gene has a decent setup, got the recipe. Ill see what the bone yard brings. Thanks for the help!
I've got pics of my setup in my photobucket link below. I fabbed an alternator bracket from 3/8" aluminum. Crank pulley was from an early 70's 351W. Milled the outer two pulleys off. The W/P pulley is a stock Mav piece. I had to space the alternator pulley out with a thick washer to line it up with the other two.
I was just in the boneyard yesterday and there was a 73 Mav with a 250 6 cylinder, AC, and PS... It had a dual belt WP pulley. They used two belts to turn the AC. It is different than the truck pulley I have though ... smaller in diameter, and a bit shallower, so I left it. It might work for someone with a spacer behind it.
Baddad, Looked at your engine shots ... very nice Love the 3 deuces. I am thinking 331 next myself ... how are you liking yours? I hear that they rev really well.
They work flawlessly. Been on that motor for about 4 years now. After tuning them initially, I ain't touched em. I had that motor in my 89 Ranger for a year or more and it was reliable enough to drive it on a 50 mile commute to work. No overdrive with 3.73 rear Toploader 4 speed, and it got 16 mpg driven sensibly. 12 mpg with your foot in it on twisty 2 lane highway at 3 am. The setup isn't cheap, I paid $1100 for mine and it was a 1 year old used set. The sound they make with a quiet exhaust though is awesome.
I have a 250 pump pulley w/air that I tested for alignment and it was very close and would work with a small spacer but what concerned me was the tolerance between crank pulley and wp pulley. They are very close , I mean 1/8 to 3/16 clearence. That felt uconfortable to me. Are you saying the pu pulley is a larger diam. than the 250 pulley?
Mitch, I was eyeballing that pulley in the salvage yard. I wasn't counting on running across it and did not have a tape measure with me. They might be the same size. I almost bought it for the heck of it, except all I had left after getting what I needed was my lunch money ... (dang economy ... ) The pulley from that truck is mounted on my 351 (taller motor ... water pump height might be different). I am not sure at this point if I used the 351 lower pulley or the original 302/AC/PS. They are very close ... the water pump pulley is tucked in behind the largest diameter V (forward position) on the crank pulley. If the bearing in the pump goes, it will likely rub and save the radiator from the fan ... I am driving it off the second V and they are close in diameters too.
Thanks jeff , the boy and I went to the yard this morning and found an ideler pully off of a f-150 that works just perfect! we robbed the slide tensioner off the i-6 and put them together , it not only functions perfect it looks really clean. so off to bead blast for all pulleys and brackets. The front end is complete and I have to say it was well worth the taken our time and searching. Ill try and post some pics here as soon as my boy shows me how! Thanks to everybody on the forum who gave ideas and told us what they did to solve there pulley issues. We will have more? Everybody Dance! bananamanbananamanbananamanbananamanbananamanbananamanbananaman :bananaman
