Cam Question
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,191
Likes: 0
From: Monroe Township NJ
Cam Question
Which is better, the hotcam, or a cam with
dur. - 270/276
dur. @ .50 - 218/224
lift - 495/502
Centerline - 114
I am looking for a cam that won't really give it a rough idle, I want it to run smooth.
dur. - 270/276
dur. @ .50 - 218/224
lift - 495/502
Centerline - 114
I am looking for a cam that won't really give it a rough idle, I want it to run smooth.
Pro
Joined: Jun 2001
Posts: 697
Likes: 0
From: College Station Tx
Re: Cam Question (C4 Suke)
In a 350" motor the hotcom will still definitely have some lope to it. The cam you mention should be relatively tame - or about as large as you can go while having a near stock idle. It will be down on hp from the hotcam though.
Advanced
Joined: Sep 2001
Posts: 87
Likes: 0
From: Baytown Texas
Re: Cam Question (ChrisB)
The 114 degree overlap with that cam is high. You're looking at a higher stall TC (with an added cooler) to run it on the street, and even then with greatly reduced idle vacuum.
Burning Brakes
Joined: Aug 2001
Posts: 969
Likes: 0
From: San Diego CA
Cruise-In III Veteran
Re: Cam Question (Red85)
What about the idle/performance for this comp cam, compared to the GM "HOT" Cam? Ive heard its a really nice grind.
Part Number 07-305-8
Engine 1993-1996 Chevrolet
350ci,
LT1 & LT4,
8cyl.
Grind Number LT1 276HR-14
Description
--------------------------------------------------------------------------------
Intake Exhaust
Valve Adjustment 0 0
Gross Valve Lift 0.51 0.51
Duration At 0.006 Tappet Lift 276 290
--------------------------------------------------------------------------------
Valve Timing At 0.006
Open Close
Intake 28 68
Exhaust 83 27
--------------------------------------------------------------------------------
These Specs Are For The Cam Installed At 110 Intake CL
Intake Exhaust
Duration At 0.05 220 230
Lobe Lift 0.34 0.34
Lobe Separation 114
--------------------------------------------------------------------------------
Recommended Valve Springs 986-16
Part Number 07-305-8
Engine 1993-1996 Chevrolet
350ci,
LT1 & LT4,
8cyl.
Grind Number LT1 276HR-14
Description
--------------------------------------------------------------------------------
Intake Exhaust
Valve Adjustment 0 0
Gross Valve Lift 0.51 0.51
Duration At 0.006 Tappet Lift 276 290
--------------------------------------------------------------------------------
Valve Timing At 0.006
Open Close
Intake 28 68
Exhaust 83 27
--------------------------------------------------------------------------------
These Specs Are For The Cam Installed At 110 Intake CL
Intake Exhaust
Duration At 0.05 220 230
Lobe Lift 0.34 0.34
Lobe Separation 114
--------------------------------------------------------------------------------
Recommended Valve Springs 986-16
Pro
Joined: Jun 2001
Posts: 697
Likes: 0
From: College Station Tx
Re: Cam Question (Red85)
The 114 degree overlap with that cam is high. You're looking at a higher stall TC (with an added cooler) to run it on the street, and even then with greatly reduced idle vacuum.
114 is the Lobe Separation Angle (LSA) not degrees of overlap. A wider (higher numerically) overlap will provide a *better* idle (than a narrower lsa).
The cam you mentioned is commonly referred to as the CC305, and has similar characteristics to the Hot Cam - with slightly more top end and slightly less mid-range.
Chris
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,191
Likes: 0
From: Monroe Township NJ
Re: Cam Question (ChrisB)
How much hp loss would I see if I don't get the Hot Cam. I was looking to do it with heads but I only have money for the cam and roller rockers. The car will be a daily driver, and a lot of highway driving at high speeds and city driving too. Would a hot cam affect the drivability and reliablility? Thanks, Suke.
