Took the mav to the track for a shake down

Took the mav to Lancaster speedway for a shake down it was spitting and sputtering like it was losing fuel the fastest time i ran was 925 71mph i know this car is high 7's low 8's .well i took it home took carb off looked it over found on the drivers side of carb there's a screw that limits the throttle from the back that was keeping the back butterflies open so I a justed it and put a 2" spacer it & i bet she'll run now total different animal !!!!

 

Here's a pic

 

you could have shook that down in the driveway...

 

but the driveway isnt as fun and neighbors tend to complain if youre doing 71 miles an hour in your driveway

 

1/8th mile?

 

I have and this is what happens only two passes !!!!! 8 cop cars later

 

Yes

 

What did this screw look like?

 

While that adjustment will cause low speed and/or light throttle issues, really should not make a difference at WOT... Sputtering/popping is more often a ignition related issue, weak spark, bad plugs etc...

Tell us more about your combo engine, trans, gear etc... I'm guessing it has at least a 3.80 gear and 3K stall as 9.25 is pretty good at only 71 MPH...

 

You can see where it used to touch the cam now it seems ok and i put the 2in spacer on too there's no stall converter i think the stock gears for the 6 cylinder its a beefed up c4

 

the bigger problem is the carb is on upsidedown...

 

Problem solved!

 

Without a converter it's gonna be tough to go in the 7's.

 

Or even more than a mid 8...

With a 2K stall & 3.00 peg leg rear, my Comet went 9.23@77.7...

My T-Bird and Marauder both ran 8.3 to 8.4 but were making 83/85 mph...