75Duster360

When i'm in 2nd and 3rd gear if i punch it to quick over 3500rpm it seems to be slipping/ starts chugging along and sputtering. I have a 4 speed from a 73 valiant.

if i give it a gradual acceleration there is no slip.

any ideas?

slade

it spits and sputters? if ur clutch slips the engine will rev high really quick if its a spit sputter u may need plugs wires/ fuel filter carb cleaning.

RacerHog

Those are 2 sprite problems....
What Happens in 1 & 2 ????

TVLynn

Sounds more like a carb problem.

Coronet 500

I agree about the carb, what carb is it?

To confirm find a place where you can try the same 3500rpm acceleration in each gear and record the results.

75Duster360

1st gear goes up to 5k rpm
2nd starts sputtering at 3300 rpm when i was going up a hill
3rd sputters over 3600rpm
4th sputters right away around 2800rpm

this is a ll when gunning it pretty hard
if i give it a slow gradual it will sputter and catch up and shake a little

75Duster360

thanks for the info.
got new plugs work the late shift so Im a late night poster.

TVLynn

Change the fuel filter too....

pro-tech

I would do the cap, rotor, and wires with the plugs...Bill

RacerHog

I thinks its running out of fuel....
Fuel filter
Check fuel pressure.
Check fuel flow
Reset Float level

Just my 2 cents

Coronet 500

Sounds like fuel starvation to me too. What type of carb? A fuel pump test may be in order too.

Sorry Bob I see you said that too. Dan.

75Duster360

thanks again its got an old fuel pump

75Duster360

Problem solved changed plugs all except 2 behind headers on driver side. Will get at them when I swap out headers tomorrow. Did notice a little sputtering on hills. What's a good 12v pump?

slade

for fuel? theres no need to install a electric pump you can always install a high flow mechanical pump