Who is using a ZZ3/4 cam in their 305?
Thread Starter
Senior Member
Joined: Dec 2000
Posts: 550
Likes: 0
From: Alberta
Car: Red Rooster
Engine: 305 TPI
Transmission: M5
Who is using a ZZ3/4 cam in their 305?
Is there any problems with the high lift that this cam has?
Are you satisfied with this cam in terms of performance?
Thanks.
------------------
89Iroc, 305 TPI, WC T5, 3.08 Posi, Headers, Hooker Y-Pipe, 3 inch over the axle, Flowmaster 80, No Cat, Aluminium Driveshaft, Ported Plenum, Air Foil, K&N, All free mods,
Are you satisfied with this cam in terms of performance?
Thanks.
------------------
89Iroc, 305 TPI, WC T5, 3.08 Posi, Headers, Hooker Y-Pipe, 3 inch over the axle, Flowmaster 80, No Cat, Aluminium Driveshaft, Ported Plenum, Air Foil, K&N, All free mods,
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I was going to (see https://www.thirdgen.org/messgboard/...ML/015031.html ).
You're going to have "issues" with stock heads: rockers (slots too short), springs (will bind with the high lift), rocker studs (pressed are hard pressed to live long with the stresses produced by the high lift and stronger springs), flow (stock valves & ports won't take advantage of the additional lift).
To address those issues, I went with World 305 heads, long-slot roller-tip rockers, upgraded springs and retainers (over what are normally kitted with the World heads), and ported the heads. The World heads already have screw-in studs.
It would have been nice to have been able to tell you how it ran. I think you're also going to have issues with the chip unless you get a custom programmed piece, from what I've heard (I was sticking with CC carb).
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. 2-1/2" cat-back, ZZ4 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (ported World 305 heads, Crane PowerMax cam, Hooker 2055 headers, 3" Catco cat & 3" catback w/Flowmaster, restalled TC, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
You're going to have "issues" with stock heads: rockers (slots too short), springs (will bind with the high lift), rocker studs (pressed are hard pressed to live long with the stresses produced by the high lift and stronger springs), flow (stock valves & ports won't take advantage of the additional lift).
To address those issues, I went with World 305 heads, long-slot roller-tip rockers, upgraded springs and retainers (over what are normally kitted with the World heads), and ported the heads. The World heads already have screw-in studs.
It would have been nice to have been able to tell you how it ran. I think you're also going to have issues with the chip unless you get a custom programmed piece, from what I've heard (I was sticking with CC carb).
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. 2-1/2" cat-back, ZZ4 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (ported World 305 heads, Crane PowerMax cam, Hooker 2055 headers, 3" Catco cat & 3" catback w/Flowmaster, restalled TC, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
Thread
Thread Starter
Forum
Replies
Last Post
