Wrong Cam?
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From: azle texas
Wrong Cam?
Sometime ago I bought a 351w cam from a guy with no specs. He said it was a mild RV cam (new). I know it is not a 302 cam. I had a machine shop look it over, they said it appeared to be slightly above a stock cam. Anyway I put it in my 351w I was building. The short block is all stock, Heads have new valves and guides with roller rockers. Edlebrock intake with edlebrock 600 cmf carb. Replaced the points with pertronix ingnition system. I am not trying to build a hot rod just a motor that runs good.
The problem I am having is this; If I were to go and crank on it, it would not start right up. When it does start it does only by continually cranking. It sounds great when it gets going. I have checked and set the timing, checked for vac leaks. I am at the point where I am thinking it could either be the cam or distributor.
Here are two questions;
1, not knowing the year application-Did ford keep the same timing degree on all there small block camshafts (maybe it could be a timing issue with the cam?)
2, Is there a dwell in the distributor that needs to be set or would it matter with the pertronix.
It never back fires or pops out the carb or exhaust. Any thoughts or help would be appreciated.
The problem I am having is this; If I were to go and crank on it, it would not start right up. When it does start it does only by continually cranking. It sounds great when it gets going. I have checked and set the timing, checked for vac leaks. I am at the point where I am thinking it could either be the cam or distributor.
Here are two questions;
1, not knowing the year application-Did ford keep the same timing degree on all there small block camshafts (maybe it could be a timing issue with the cam?)
2, Is there a dwell in the distributor that needs to be set or would it matter with the pertronix.
It never back fires or pops out the carb or exhaust. Any thoughts or help would be appreciated.
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From: Littleton, CO
Most Ford timing is around teh 8 degree mark, if I recall correctly. Does the motor fire back up right away after it has been running? There is no dwell with the Pertronix, but if I recall correctly there was a feeler guage provided to set the pick-ups apart with. Also, did you widen the gap on the plugs after installing the Pertronix. How is the shot of fuel from the carb?
Just a few thoughts... --Mike
Just a few thoughts... --Mike
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From: azle texas
Originally Posted by Mike G
Most Ford timing is around teh 8 degree mark, if I recall correctly. Does the motor fire back up right away after it has been running? There is no dwell with the Pertronix, but if I recall correctly there was a feeler guage provided to set the pick-ups apart with. Also, did you widen the gap on the plugs after installing the Pertronix. How is the shot of fuel from the carb?
Just a few thoughts... --Mike
Just a few thoughts... --Mike
I have played with the timing back and forth. Yes after it has been running it does fire right back up. I used the feeler guage to set the pick-ups. I did not widen the gaps on the plugs though. It seems to be getting a good shot of fuel. I must also mention that when I step on it from a stop it has a large flat spot. I have to raise my foot up for it to regain life. It doesnt pop or back fire though.
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From: Littleton, CO
Originally Posted by 70T351W
Yes after it has been running it does fire right back up...
.. I must also mention that when I step on it from a stop it has a large flat spot. I have to raise my foot up for it to regain life.
.. I must also mention that when I step on it from a stop it has a large flat spot. I have to raise my foot up for it to regain life.
--Mike
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From: azle texas
I will do some playing around with the carb. I recently came across a guy who did not have good things to say about the edlebrock carbs. If I can get ahold of an extra carb (just to see if it acts as it should) I will put it on. When I adjust the choke it acts as if it is going to start.
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From: Emmett, ID
to tell you the truth, there is nothing wrong with edelbrock carbs, its the people who don't know how to adjust them who hate them. I have 2 of them and have had zero problems with em. if you need help with adjusting it let us know we'll help you.
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From: royal oak, mich
Originally Posted by Broken40
to tell you the truth, there is nothing wrong with edelbrock carbs, its the people who don't know how to adjust them who hate them. I have 2 of them and have had zero problems with em. if you need help with adjusting it let us know we'll help you.
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From: Weston, Nebraska
I kinda thought the samething, but it should fire right up though with the gas from the bowl.
I also have an edelbrock and love it (as long as you get the right set of springs for the secondaries they are great (no leaks) Holleys are just fine to, but I always have problems with em leaking, so I do have a lot more experience with em b/c I've had to rebuild a lot more of em, never have rebuilt a edelbrock, but when I bought the carb. new it came with a book on how to properly tune it, very good and informational, I read the whole thing just b/c I was curious as to how they worked. Sadly I lost the book.
Trying the reg 302 firing order does sound like a good start though, I would think it would pop though if that many cyl. were off or if you wired ur dist clockwise accidently (my pickup did run, but not well), at least to eliminate it, next I'd throw a different carb. on that was on another car so you know it's close to being tuned and doesn't have some problem of it's own. You said it's getting good fuel, any black smoke when it flattens out?
Another thought, you put a cam in, you didn't accidently get off a tooth on the chain did you?
I also have an edelbrock and love it (as long as you get the right set of springs for the secondaries they are great (no leaks) Holleys are just fine to, but I always have problems with em leaking, so I do have a lot more experience with em b/c I've had to rebuild a lot more of em, never have rebuilt a edelbrock, but when I bought the carb. new it came with a book on how to properly tune it, very good and informational, I read the whole thing just b/c I was curious as to how they worked. Sadly I lost the book.
Trying the reg 302 firing order does sound like a good start though, I would think it would pop though if that many cyl. were off or if you wired ur dist clockwise accidently (my pickup did run, but not well), at least to eliminate it, next I'd throw a different carb. on that was on another car so you know it's close to being tuned and doesn't have some problem of it's own. You said it's getting good fuel, any black smoke when it flattens out?
Another thought, you put a cam in, you didn't accidently get off a tooth on the chain did you?
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From: azle texas
Never got it going
I got so discouraged with it I parked it and bought a 96 f350 psd. I took the pertronix out and put the points back. now it wont get any fire. i did replace the resistor wire. as soon as i get the fire situation figured out i will replace the fuel pump (it doesnt seem like it holds pressure in the line) then i will hit someone up on setting up this edle 650 carb.
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