cam with stock l98 heads

Reply Subscribe

Thread Tools

Search this Thread

08-02-2015, 12:45 PM

91z28jta

Junior Member

Thread Starter

Join Date: Aug 2015

Posts: 2

Likes: 0

Received 0 Likes on 0 Posts

cam with stock l98 heads

I was wondering can i run a .480/.480 lift cam with stock l98 heads

Reply Like

08-02-2015, 02:32 PM

yaj15

Supreme Member

iTrader: (3)

Join Date: Aug 2006

Location: Northern California - Bay Area

Posts: 1,376

Likes: 1

Received 7 Likes on 7 Posts

Car: 1988 IROC-Z

Engine: L98 - full intake & exhaust boltons

Transmission: Bowtie 700r4, 2400 rpm stall

Axle/Gears: Borg-Warner 9bolt, 3.45 gears, posi

Re: cam with stock l98 heads

Someone correct me if I'm wrong but, I thought the stock springs were only good for 0.470''?

At any rate, when you swap cam's it's a good idea to update the springs to match the new cam. If you still have the original valve train in the car they are over 25 years old and updating those parts is cheap insurance.

Reply Like

08-02-2015, 03:55 PM

aliceempire

Supreme Member

iTrader: (14)

Join Date: Nov 2008

Location: Milwaukee

Posts: 1,996

Likes: 96

Received 140 Likes on 116 Posts

Car: 92 Firebird, 77 Trans Am SE, 86 Z28

Engine: 5.7 HSR, T/A 6.6, empty

Transmission: T-5, TH350, T-5

Axle/Gears: 3.08 posi, 3.23 posi, 3.23

Re: cam with stock l98 heads

I have no idea what the original springs were good for but I wouldn't trust 20+ yr old springs on a new cam nor would I not match the springs to a new cam.