mod plan
Thread Starter
Senior Member
Joined: May 2003
Posts: 616
Likes: 0
From: Windsor,Ontario, Canada
Car: 1985 Camaro Z 28
Engine: 305 LG4
Transmission: 700R4
mod plan
ok this is what i plan to do
Holley SysteMax street performance pkg. that includes:
-Lunati Hydraulic Camshaft with lifters
218*/218* @.050
268/268 advertised duration..not sure what that means ???????
.457"/.457" Lift
110* Lobe seperation
105* Lobe centerline?
dual plain intake manifold.
Summit Roller rocker arms 1.5 ratio, 3/8" stud
comp cam valve springs and
Holley Streeet Avenger carb 570 or 670 cfm with electric choke
------------------------------------------------------------------------------------
OR
Summit Cam kit
214*/224*
.442"/.465"
Lobe seperation 112*
Good for RPM 1,500-4,000
Summit rockers-same as above
comp cam valve springs
Holley Street Avenger carb, same as above.
My question is this, will this setup work?
85z28, 305 4bbl, auto, with shorty headers, hi output ignition, chrome aircleaner....
I am not going to be racing my car, just want it to sound and run like its got some bawls
Ive been thinking about this system and it seems ok but i wanted some advice as to if i should still go smaller on the cam and maybe the carb to? I dont wanna go with a 204 cam maybe a 212 will be ok though. This is the most major mod i will be doing, i dont plan on changing the heads just some of the valvetrain. Please advice and opinions, yes i said opinions are appreciated.
Holley SysteMax street performance pkg. that includes:
-Lunati Hydraulic Camshaft with lifters
218*/218* @.050
268/268 advertised duration..not sure what that means ???????
.457"/.457" Lift
110* Lobe seperation
105* Lobe centerline?
dual plain intake manifold.
Summit Roller rocker arms 1.5 ratio, 3/8" stud
comp cam valve springs and
Holley Streeet Avenger carb 570 or 670 cfm with electric choke
------------------------------------------------------------------------------------
OR
Summit Cam kit
214*/224*
.442"/.465"
Lobe seperation 112*
Good for RPM 1,500-4,000
Summit rockers-same as above
comp cam valve springs
Holley Street Avenger carb, same as above.
My question is this, will this setup work?
85z28, 305 4bbl, auto, with shorty headers, hi output ignition, chrome aircleaner....
I am not going to be racing my car, just want it to sound and run like its got some bawls
Ive been thinking about this system and it seems ok but i wanted some advice as to if i should still go smaller on the cam and maybe the carb to? I dont wanna go with a 204 cam maybe a 212 will be ok though. This is the most major mod i will be doing, i dont plan on changing the heads just some of the valvetrain. Please advice and opinions, yes i said opinions are appreciated.
Supreme Member

Joined: Sep 2001
Posts: 1,195
Likes: 0
From: Flowery Branch, GA
Car: 1985 Iroc-Z
Engine: 1 BA 305 TPI
Transmission: Probuilt 700R4 - 2800 Stall Midwest
Axle/Gears: 3.42
I would go with the summit cam if you have to choose between those two. I like the Compcam 212/218 better for the 305.
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