Is my 91 a roller cam or not? Cam specs?
#1
Thread Starter
Member
iTrader: (3)
Joined: Aug 2006
Posts: 253
Likes: 1
From: above Baton Rouge, LA
Car: depends on the weather
Engine: several
Transmission: all manual
Axle/Gears: lots
Is my 91 a roller cam or not? Cam specs?
I have a 91 rs, 305 tbi, 5 speed. Is this a roller cam motor or not?
Also, does anyone know the factory cam specs for this motor?
Also, does anyone know the factory cam specs for this motor?
#4
Thread Starter
Member
iTrader: (3)
Joined: Aug 2006
Posts: 253
Likes: 1
From: above Baton Rouge, LA
Car: depends on the weather
Engine: several
Transmission: all manual
Axle/Gears: lots
Ok, it looks like roller cam it is.
The reason I asked is I have the shortblock from my 86 and was thinking of building it for the 91rs, but the 86 is non roller and the cam is gone. The 86 has no ridge in the cyls, but cam bearings look kinda bad to me. The 91 has a lot of miles, runs good, but is starting to use some oil and I was planning on a rebuild this summer.
I guess I will just pull the 91 and build it back to stock.
The reason I asked is I have the shortblock from my 86 and was thinking of building it for the 91rs, but the 86 is non roller and the cam is gone. The 86 has no ridge in the cyls, but cam bearings look kinda bad to me. The 91 has a lot of miles, runs good, but is starting to use some oil and I was planning on a rebuild this summer.
I guess I will just pull the 91 and build it back to stock.
#5
Joined: Jul 1999
Posts: 10,947
Likes: 21
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Cam specs are in the tech data section of the main page of this website. I think its something like 179/193, and .370/.390 lift.
When you rebuild the 91, you can use any 87-97 TPI or LT1 camshaft. They are better than the TBI cam and will work with the stock computer, giving you a good increase in power.
When you rebuild the 91, you can use any 87-97 TPI or LT1 camshaft. They are better than the TBI cam and will work with the stock computer, giving you a good increase in power.
#6
Senior Member
Joined: Mar 2001
Posts: 838
Likes: 1
From: Silverhill,Al
Car: 92 Camaro RS
Engine: 305 TBI
Transmission: T-5
Thread
Thread Starter
Forum
Replies
Last Post