BLKWS6

Just replaced the cam and converter in my 99 TA and now my gas mileage has gone through the floor! <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> I went from getting about 210-225 out of a tank to 125-130 and thats babying it the whole time <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" /> Anybody got any suggestions?? if it makes a difference it was dyno tuned after the install...

Z00

Might want to change when your converter locks up while at part throttle to help you save some gas.

98TAauto

iTrader: (2)

Im getting around 175-200 with my 224cam and vig3600 as far as i can tell. But I hardly ever have a full tank in the car anymore(drag reasons)

when i did the converter I didnt notice but 1-2mpg drop

nysbadmk8

224/224 and a 3600 vig.. 200-220 a tank

BLKWS6

Well my stall is only a 2800 and the cam is a custom grind about the same size near the 224/224 cam. Even the shop that installed it said i should be getting 210-220. ????? <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" />

Ragtop 99

iTrader: (7)

Cam cost you at least 2 mpg and the converter 1 mpg so a loss of at least 40 - 60 miles per tank was expected. Have you atap'ed or noticed any performance / drivability issues?

BLKWS6

Ragtop,
havent run the TechII on it yet but i havent seen any signs of performance issues. So far, it runs great. really great. Jsut wondering if i should have expected this or not. wasnt thinking it would be this bad though. I knew it was going to drop but not this much...

gwj

I doubt it's the converter-not enough change.
In my case, going from stock to a 3500 stall lowered my town mileage drastically (w/2.73 rear).
On a long evening trip through the boonies recently, I got >28 mpg at an average of probably 80-90 mph, with (guessing) 30-40 miles cruising around 110-120:about a 220 mile trip.
When the converter locks,it's not costing any gas mileage.
What the cam and your tuning does, DK.

Kenny H

Around town my mileage is terrible, on the highway its still decent. When driving around town, try to get over 40 MPH or whatever speed the convertor locks up at. I try to accelerate a bit faster then normal to get up to that speed so I can avoid the tranny slipping for 30 seconds at a time....