i was wondering what a good cam would be for my 305, 89 RS.
i plan on getting headers and true duals at the same time as the cam. i dont want to overcam it, but to give better low and mid range, and a nice sound. i dont want to do any computer programing. any suggestions

 

youll definately need to do some chip tuning if you get a new cam, if you want to go mild, try finding a L98 (350 TPI) camshaft, you can pick up used ones for under 20 bucks and since they are hydralic roller cams, they dont wear much.

 

There are a lot of options on this. I don't know if your car is stock or has modifications and if so, what they are.
You may want to try the search feature on this site and narrow your search by using a combination of terms like "cam AND TBI AND off-idle" or similar terms.
Or you can check the Comp Cams catalog and check out their Extreme Energy line of cams for computer controlled cars. That section is located near the top of page 144 of the Comp catalog.
There are other cams out there for sure, I am just most familiar with Comp.
Here is a link to the catalog:
http://www.compcams.com/Technical/Ca...-03/#camshafts
Go to the section under General Motors 128-169. Then scroll down to page 144.

For exhaust have you considered something like a Flowmaster 3" single system with dual outlets (out of the muffler)? It may be a little lower cost and have nearly identical performance for a 305. Just a thought.

Good luck with your mods and welcome-
S-D

Also- As you look for a cam, I believe the general consensus is that you need a cam with at least 112* lobe seperation (LSA).

 

The problem with these cars is that you have to prepare your car for the cam. You cannot have any weak links and we all know that these cars have them. You really need a strong running stock fuel pump or a high volume one. You will need a ton of tuning no matter how tame a cam you go with. Depending on the size of the cam you may need bigger injectors and TBI unit. So if I were you I would add custom prom, fuel pump, and an afternoon for the ultimate TBI mods for starters. You will thank yourself when you car runs the way it should after the swap.

 

This makes a lot of sense and is a very practical approach. Combined with headers and high flow cat/exhaust, it would give the car noticably more power. May also consider air intake systems if it is not addressed with the Ultimate TBI mods.
S-D

 

you guys are great. i really love this site. all this info really helps a lot. o and the car is completly stock, 305, tbi, 5 spd, 88,ooo miles. keep the advice coming.
Mike

 

not sure what your budget is but here an option that i have im my gartage waiting to go in..
crane powerman makes emmission legal camshafts the one i have is crn-104225 from the summit catlog. will work great in a 305 tbi and wouldnt be that hard to tune either.
Specifications:
* Advertised duration: 264 intake/270 exhaust
* Duration at .050 in. cam lift: 208 intake/214 exhaust
* Gross valve lift: .438 in. intake/.452 in. exhaust
* Lobe separation: 112 degrees
* RPM range: 1,500-5,000
* Builds power in the mid and upper rpm performance with a smooth idle
( This part carries CARB E.O. number D-225-22. 50 state legal for listed applications )

 

i'll throw this out here . . .

i am selling an UltraDyne Racing cam right now.

brand new, in box, neverused.

272/282
206/216
.447 .447
112

PM me for more details.