im building a supperramed 383 for my 91 Z l98. it has 64cc edelbrock performer rpm heads w/ forged pistons on summit stage I rods. should be @ 10.3 to 1 comp. im using crane 1.6 gold extruded roller rockers and 1000 cfm accel throttle body. i havent gotten my injectors yet but probly go w/ 28 or 30 pds.
the cam i have currently is based on the lt1 hotcam w/ more lift and a slightly longer duration. it was great in the upper rpms and not too bad in the low-mid range torque. but im thinking i need to go more radical then that.
a lil info to help w/ your suggestions:
im trying to get a car setup thats more in the upper rpms, street/ strip. no emmisions to worry about here. not going to be a daily driver. i have all the suspension mods:adj cont arms, adj panhard, sfc,adj tor.arm ,adj kyb shocks,eibach lowering springs relo braks. and a set of stickys.have a full aftermarket ignition as well,afpr, underdrive pulleys, mid lenght headers and y pipe, 3 inch to flowmaster duals.. trying to run low-mid 12's natural aspiration

 

I've seen a good bit of these combinations in the low 12's/high 11's. 383, AFR heads, SuperRam induction with the LPE cam 219/219. Hope this helps.

 

If it is not ging to be a daily driver and you want a higher RPM car, go CC306 all the way!

 

my friends at comp cams also said the cc306 is the way to go.
but i thought they might be a lil biased seeing as how they work ther and all.

 

i thought the CC306 was an LT1 cam and was designed more for that intake style? but it will fit none the less.... and should make tons of power

 

it is designed for the lt1 from what i understand. but can be used in standard small blocks. the superram intake and plenum are designed to run in the higher rpms like the lt1 manifolds, mabey not as good as an lt1 intake but im not sure on that one.

 

TPIS ZZ409 cam, 226/226, .520/.520 with 1.5 rockers. .554 lift with 1.6's. This is what i'm going to be using with my big mouth setup and AFR's.

 

If you goto the Lingenfelters site they recommend the LPE219/219 .560/.560 w/1:6RR to be used w/the SuperRam ..... That what i'll be using with my super ram setup. You should get high 11's with it

 

that lpe looks like a very radical cam. i wish i had the money for the afr heads. but im using the edelbrock performer rpm aluminum heads. will my heads flow enough for that cam?

 

btw tpi formula 350 thats a good lookin bird man! you have almost the same setup im using in my car, what are you running ?

 

13.21@104.6 .... times 1 1/2 years old. I added afew minor mods since

 

The edelbrocks will be enough but you might have to change springs. The only way to maximize the potential hp inyour engine is to get better flowing heads. But you will be fine.

 

The CC306 is a few steps bigger. 219/219 is not radical.

 

the lift being .560 seemed a bit high to me thats why i refered to it as radical.
yea the edelbrock spring are only good to .550 lift so those would definatly have to go.

 

my 219 cam runs good. idles smooth, drivability good and also passes emmisions.

 

emissions dont concern me. here there is no inspection in the county where i live. but thatnks for the info.

 

MKOS:

can you tell me what your idle speed and vacume are with the lpe 219 cam?? I am running 224/230 comp grid that idles somewhat poorly and won't pass emmissions. I'm getting about 12" of vacume at around 1100 rpm. I am considering a swap to something smaller, but i do not know how small to go. also what kind of mileage are you getting?

 

I'd say the 219 would be the minimun to go with, going from your original post.

 

Go with a Comp custom ground HR 230/236 .544/.555 with 1.6 rr ground on a 112 lsa + 4 degrees advance. This cam works!

I used it on my 383 and passed Illinois emissions. The key is 112 lsa.

Your motor will pull strong to 6000 rpm.


www.geocities.com/dzperf

 

since this post i decided to ditch the edelbrock heads and am saving for the afr 195's. i think im going to use the comp cams 306 as well. comp being here in memphis and i have a few buddies that work there i can get it cheap and i think it will be the cam im looking for . still might opt for the lpe cam but the compo cam seems to be the way to go.

 

I have the idle speed set at 750 in the chip. Its about 675 in gear. Vacume is 15 at idle and about 12-13 in gear. Mileage with the 383 and 3.27's is about 20-22 MPG. My base timing is at 0*. I had it at 6 but with heavy throttle I was getting valve chatter. I moved it to 0 and it went away. I'm still working on a good chip though. www.LSracingchips.com is doing my chip. His name is jamie and is a real nice guy. Its nice having him 30 minutes from home since he can use my car as a test car. I highly recommend the 219 Dont let the smaller duration scare you. Good lift and agressive ramps help this cam be a performer

 

I also have the LPE 219/219 and love the drivabiliy. I have had it since about 2000-2001, was recommended by Lingenfelter to my engine builder specificaly for a superram 383. Same came they used to use in all their packages.

 

my problem is that i'm having a nightmare passing emmissions. My mileage is about 12mpg. The car has always had a bad idle, i had an electric q jet now a stealth ram 950, idle is poor no matter what i do. The cam i'm running is a comp hyd roller with 224/230 @.050" with 1.6 rockers my lift is around .544 ( i forget exactly) on a 114 lsa. My intake shows signs of serious reversion, my mileage is dismal and the idle/low rpm is always rough although it makes great power even down low. At higher rpm it's a beast. I'm considering a cam change to make the car more practical and improve my chances at passing emmissions better but i don't know how small to go.

 

Were you around Chicago or something then?