It varied but I never really got to get a good reading for hwy.(car was mostly city driven) I would get around 15mpg in the city.

 

4.10s would really help my car out but I plan to spray it and don't want to run out of gear. I might just switch to 3.73s

 

I've been considering a 503 cam do you have to get bigger injectors, t/b, or a tune with this cam? I know a tune would help with a new cam but im on a small budget and it might be a month or two before I could get a tune so would it be ok without one?

 

I am on stock injectors and TB. I would suggest getting a tune from either MadZ28 or PCMsforless. Its not going to be as good as a dyno tune but it will help out a lot.

 

you are going to need injectors in order to get everything out of the 503 cam. It will make 340-350rwhp if setup up properly and the stock 24's are only good till 315-325rwhp. Otherwise you ll be at or near 100% duty cycle.

 

My times are in sig with 503, but I'm not sure why I'm trapping so much lower than everyone.

 

mdaction, more gear and converter will definitely help.

 

what is a good convertor, gear for this cam and an auto?

 

to run good at the track I would run 4.10/4.11s and a 3600-4000 stall.

to run good on the street I would run 3.73s and a 2800-3200 stall.

 

looking at my setup what would you change first the gears or the stall? will be driven about 4K a year, track several times a year, the car will spend alot of time on the highway in lock up.

 

I've got a cam with the same duration on the way. I've already got a 3200 Vigilante converter that flashes to about 3800 behind my stock motor and 4.10s. Maybe someday I'll go looser on the converter and deeper on the gears...

 

since you have a 9" but want highway manners I would split the difference between 3.73s and 4.10s. go with a 3.90 or something similar. I forget what 9"s offer. was it 3.89s?

my 383 had a TCI 3500 that acted like a 4000+ rpm stall. shift extensions were high. I think with that smaller cam you wouldn't need as big of a stall as mine had. 3400-3600 max. I wouldnt change it unless something happened to it or the trans that necessitated removing the trans.

 

yeah i was thinking about the 389's

 

how big was the cam you had in your 383? i was thinking down the road of pulling my heads and having bee hives installed and let lloyd port them some more and have a cam ground for it.

 

It was an LE3 cam from almost 3 years ago. I'm sure the grind isn't used any more but I still won't post the full specs. it was a 24x/24x, 10x LSA, under .600" lift. it was a pretty healthy cam but worked real good.