Im looking at the tr 224 or 220 cam or maybe a comp of similar specs. I have to drive 50 mins one way to school next semester and i dont want to do the swap this summer if the mileage goes to crap. What kind of gas mileage are yall getting with your cams in a 4.8, and what gears do you have?

Thanks,
Derek

 

4.8. TR224, 3500 Stall, 3.73 rearend. 9-10 City, ~12 Locked up. Wait for the swap with the price of gas, it's kicking my ***.

 

4.8, 219/228-112, 4.56 gears, 32" tire, T56. I can get as low at 14mpg in town if I drive like an ***, but if I drive normal, only getting into boost when needed I get 17mpg in town with the A/C on about 2/3 the time. Its all in how you tune it.

 

but im not fi, im n/a.

Derek

 

9-11MPG depending on what mood I am in

 

just before i left BR i got about 320 miles to a tank driving around baton rouge

and it got about 20-21mpg on the way back home to tulsa on the highway

it had a 222/224 112lsa LT's, stock vertor, 3.42's, 20's, 8.1 inj's,

 

I believe SSlow4.8 told me the other night that with his 224/224 driving easy he gets ~16-17mpg. Other mods of his are P&P heads, smaller stall, Longtubes with gutted cats, Flowmaster Super40 dumped, and cai.

 

Derek, my truck is set-up similar to yours, I lost about 1/2 mpg with this cam but it still needs to be tuned for this cam. I'm getting about 16-17 overall right now. The cams you are looking at are pretty big for the 4.8 but definitely streetable with a good tune. I wouldn't hesitate to go for the 224 but you will probably lose at least 1-2 mpg.

 

I'm curious just exactly HOW you guys are managing to get 9-11mpg with RCSB 4.8's ?!?!?!?....I can see 9mpg with my ECSB H/C 6.0 but I have to give it absolute hell to do so !!

 

With my 3500 stall it's not hard at all. I simply don't see below 3k during normal driving. Sometimes if I do a lot of lock-up driving and take it easy I can pull off 300 miles to a tank with the Gas light on.