Runnin like a Harley

[jebadiah04]

I really doubt that's your problem, I fought my 454 for 2 days to get it to fire off the first time. tons of popping through carb even had it on fire once, it was in the dizzy somewhere, fiddle with it enough to get it to light off, then I could tune it after that. ohm out your spark plug wires, check your cap, and also check the center button on the cap and make sure there isn't any corrosion on the rotor. sometimes where the rotor touches the cap it can arc there, and cause a built up of carbon, it should be either silverish colored or brass colors, if its darker gray, its time for a new cap and rotor.

 

[1970Custom]

Duraspark, different from early '70s to late '70s? I'm finding two different part #s for the 351W.

 

[BIGRED911]

Duraspark, different from early '70s to late '70s? I'm finding two different part #s for the 351W.

Does your rotor bolt down or no? Ive got a bolt down rotor in my garage that was boxed wrong but i kept it....

 

[1970Custom]

Negative.

Swapped the box, and the dizzy internals, got it to run, but extremely rough and has a major stumble when throttle is applied.

 

[jebadiah04]

carb swap yet?

 

[1970Custom]

Not yet. Doesn't act like a fueling issue, but might just have to try it.

 

[jebadiah04]

Might help to try it?

Sent from my mudwhistle via Lemmiwinks.

 

[1970Custom]

Well, not carb related, yet.

Figured out its an ignition issue thus far as I have a 175.5ci V4... gonna dig a lil deeper tomorrow and shoot for a 351ci V8....

 

[nobodyspecial]

Runnin like a Harley

Slow and like crap?

Sorry, I just can't believe nobody took any shots at Harleys with a thread title like that!

 

[1970Custom]

For 175ci it's still able to break them loose, in the gravel and on the trailer ramps....

 

[1970Custom]

It runs, when the plug wires are wired for the cam and not the engine it works a whole lot better...

 

[nobodyspecial]

For 175ci it's still able to break them loose, in the gravel and on the trailer ramps....

175 cubic inches?

 

[1970Custom]

Yep, that's half of a 351ci V8...

Damn this thing SCREAMS!!!!!

Few things to button up, check the timing, tighten up a couple exhaust bolts, get all the gauges working.... then the real fun begins...

 

[nobodyspecial]

I missed your post before my comment about the harley. I thought you were talking about a 175 ci Harley, hence my confusion.

 

[primetime]

It runs, when the plug wires are wired for the cam and not the engine it works a whole lot better...

That`ll happen. Glad you got it sorted out.

 

[5.0Flareside]

Bwhahahaha damn dude...

 

[1970Custom]

Might be short lived, major overheating issue to sort out. Boiled over pretty bad and the gauge didn't even give warning, hope its an air pocket in the system and not a flow problem like I'm thinking. Its a brand new mechanical gauge too as the old one had a buggered up wire.

Also have an oil pressure issue, started out with 20lbs but the longer it ran the less pressure I had. Had some old oil in the line so that could be a culprit, gonna pull the line off the back of the gauge and see if I can get it to clear out. If that doesn't solve the issue I'm gonna have to probably pull it back out and figure out why the pump ain't pumping...

 

[5.0Flareside]

20lbs ain't bad really on a 302 with a lot of miles.

Did you test the thermostat before installing?

 

[1970Custom]

Doesn't have a lot of miles, had 50k when it was purchased.

Stat was brand new, but I know that doesn't mean anything, still doesn't explain lack of a reading on the gauge...

 

[5.0Flareside]

Did you test the thermostat before installing?

Ok.. Well IMO as long as it don't knock.. Your fine on oil pressure.. Cause it just means your oiling system isn't straining..