heres my 305's setup: mildly ported stock heads, stock shortblock with 9.3:1 comp, XR252 comp roller cam, TH350 with stock converter, edelbrock performer intake and 600 CFM carb, 3.23 rear


i have a 2500 RPM stall converter sitting in my garage

i am thinking that i can run more cam with this setup............

is the comp XR 268 roller cam too much, or will it gel nicely until i can afford either 305 torquers or vortecs?

please give me your opinions on what cam to run

i am willing to change to a different intake, but i would like to be able to utilize the 2500 stall converter that i have

thanx

 

max.

A 268 is a little stout for a 305...even with a converter.

 

In my opinion the cam you're running is as hot as you want to go without changing to 3.73s. Running the 268 cam could be a bit doggy in front of an automatic w/ 3.23s, high-stall converter or not.

 

well, 4.10's have been lurking in the back of my mind for a while now

before anyone goes and tells me my gas mileage is gonna suck, its ok, cuz this isnt my daily driver

also, i am definetly considering aluminum L98 heads........

stock for stock, they seem to be a little bit ahead of the torquer 305's

 

Read this months Super Chevy. They put a set of out of the box S/R torquers on their motor and lost horsepower. The L98 heads flow numbers are almost at 200cfm which is just barely more than what I've seen TPI 305 heads flowing according to people who have flowed them stock.

Just some things to think about before you spend a bunch of money.

 

<b>before anyone goes and tells me my gas mileage is gonna suck, its ok, cuz this isnt my daily driver</b>

then do it. screw it. If your not concerned with fuel economy go as big as you can without driving limitations.

this means everything has to match to. sure, go with 4.11 gears. but also go with a 3000 RPM stall+. dont forget to get a cam with a powerband of 3500-6500 too. Somthing with about 230* of duration @ .050 should do it. and heads/intake have to match too. better throw a single plane weiand/holley on there. and a nice, big, fat, juicy 750 CFM should do it. heads? oh yeah, at least a 2.05/1.60 with 200CC intake runners. ported to hell. nitrous will help too, say for a stock botton end... a 125 shot.

this is what you need for speed my friend, without spending gobs of money on a crazy supercharger setup and a new engine.
Dont expect any stock engine to live with those mods either. keeping the rpms below 5500 would be ideal, but are you going for the biggest numbers or not? heh.

yeah, i know you have a 305. maybe it would just be cheaper to bolt on a supercharger anyways eh? think about it, $1500 gets you a weiand 144 capable of 10 PSI of boost on a modified 350. you have a 305. crank up the boost, run a decent carb and throw a better cam in to take advantage of it. then when you get a 350, you can just swap everything over....

 

jeez man, forget i even asked



let me re-phrase my question for those who arent going to give me a smart-*** remark:

what would be a good cam to run with a 3.73 rear end, a 2500 stall converter, and say either aluminum L98 or Vortec heads?

 

I wasn't aware they made a XR268... don't they go from a 264 to a 270 in the catalog?

I think that a 268 (or a 270) is kind of too much cam for a street 305, step down one notch to the XR264. That's what I have in this weenie little POS 305 I'm driving right now, 5-speed, 3.73s. It's already a bit soggy at the bottom; if I'm in second or third gear and floor it, I can feel the torque curve as it builds up RPMs, it doesn't start really coming on until over 3000 RPM, and peaks at about 4500.

"There's no such thing as too much cam, only not enough motor". This is one of those situations.

 

thats a VERY good point........

some people on here, i think Sitting Bull, are running a larger cam than i am, and acheiving nice results...................

 

<b>smart-*** remark</b>

i wasnt being smart-***. i was being serious. a 305 with the right stuff can go go go. you said you werent concerned with fuel economy, so i brought up the fact you can make 400-450 horsepower easilly with what I listed. I also just mentioned bolting a blower onto your 305 would be a good idea as well, a small blower would be perfect. you have perfect compression ratio for 4-5 PSI of boost out of a weiand 144. perfect. strap on an extra 100 horsepower. not smart ***. good ideas.

 

well, i truely am sorry then

please accept my apology

its just that when you tell people that your hopping up a 305 around here, you usually get the 3rd degree

i mis-understood your comment and i am sincerly sorry

 

i was thinking about the centrifugal vortech supercharger for carbs for a while there, but its $3000

there is a guy who posts on these boards (i'll find the link in a moment) who got his 305 to run 11.60's

thats where all my ideas are currently comming from

he had a stout bottom end built (which i am not going to do yet)

same compression ratio that i have
torquer 305 heads
a cam that i cant recall the grind on, but it will be in the link i post
performer RPM intake
and a 150 shot of Nitrous Oxide

obviously, i wont run a 150 shot on a stock bottom end, i will however be brave enough to use a 100 shot when i am racing at the track

he also had a nice list of traction mods that i want to add to my car also
for a trans he is using a built TH350 (my Z28 currently has a TH350 also) and he was using a 3.73 rear end
(i have 3.23's, but i want to switch to either 3.73's or 4.10's)

sounds kinda hard to believe, but he managed to run some nice times, and i would like to follow his plan of attack

 

https://www.thirdgen.org/techbb2/sho...hreadid=146386


http://camaroz28.cardomain.com/membe...page_id=195505