ZZ4...Too Much Cam?
Le Mans Master
Joined: Mar 1999
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From: Fort Worth Texas
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Former Moderator
Cruise-In I-II-III Veteran
Re: ZZ4...Too Much Cam? (CAJUN C4)
I've got one on the shelf waiting to go in.... same setup: '90 automatic with 3.07's.... From what I've seen it's not too much bigger than the stock '90 cam as far as duration. Lift is quite a bit more though. Duration is larger than '86-'89 cams though.
Melting Slicks
Joined: Apr 2002
Posts: 3,019
Likes: 0
From: down that one road next to that big tree
Re: ZZ4...Too Much Cam? (Marcho Polo)
it's larger than any L98 cam in lift and duration. might slip by alright on the stock chip even. i think it would work great in your app. still waiting for polo to install the one i sold him & give us some feedback :)
Burning Brakes
Joined: Oct 2000
Posts: 897
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From: My Own Private Idaho
Re: ZZ4...Too Much Cam? (Marcho Polo)
I've got one on the shelf waiting to go in.... same setup: '90 automatic with 3.07's.....
[Modified by cgtarga1, 3:12 PM 12/12/2002]
Melting Slicks
Joined: Apr 2002
Posts: 3,019
Likes: 0
From: down that one road next to that big tree
Re: ZZ4...Too Much Cam? (CAJUN C4)
won't go in a 86 tpi without some modification like retrofit lifters and stronger springs. that goes for the later cars also, you need something like the LT4 spring, the zz4 cam is a hyd. roller, the 86 is flat tappet.
Drifting
Joined: Dec 1999
Posts: 1,319
Likes: 2
From: Douglasville GA
Re: ZZ4...Too Much Cam? (gtsyellow)
I am (was) running a complete ZZ4 in my 86 auto coupe. No problems as far as vacuum or transmission. I had the 3.07 ratio also.
I am now running a ZF6 with 3.45 gears though, but I wanted a 6 speed... :)
Tom Melton
82 CE
86 Z51 Coupe
I am now running a ZF6 with 3.45 gears though, but I wanted a 6 speed... :)
Tom Melton
82 CE
86 Z51 Coupe
