Mosesatm
Well-known member
- Joined
- Jan 18, 2005
- Messages
- 9,018
I've had about enough of my lopey camshaft so I'm considering replacing it with something smoother. My lopey days are over!
Does anyone know of a cam that offers a smooth idle but a little more power than the stock unit?
From what I've been able to figure out here are the specs for the stock cam for my '66 289.
Duration @ 50 = 198 intake & exhaust
Gross Lift = 368 intake, 381 exhaust
The Melling 24212 I'm now running has:
Duration @ 50 = 218 intake & exhaust
Gross Lift = .461 intake & exhaust
This cam just has too much lope for me but I don't know if it's the lift or the duration (or both) that creates the lope. I'm guessing it's the .461 lift causing the problem.
Three cams I'm considering are the CompCam 240H, 252H, and the 255DEH.
CompCam's DEH (Dual Energy) series has longer exhaust durations and greater exhaust lift so they supposedly work better for cars with restrictive exhaust systems, like ours. It sounds good in theory but I don't know if it works in reality.
The 240H seems to be pretty close to stock. It's a little less on the intake duration but stonger on the exhaust, and has a higher lift on both. It's described as having a "very smooth idle". I like the "very smooth idle" description but I don't know how it does on performance.
Duration @ 50 = 192 intake, 200 exhaust
Gross Lift = 416 intake & exhaust
The 252H is a little stronger all around and the numbers place it about half way between stock and what I'm now running, but it's idle is described as "smooth". Is there a difference between very smooth and smooth? With these numbers I'm a little worried it may not be as smooth as I'd like.
Duration @ 50 = 206 intake and exhaust
Gross Lift = 433 intake and exhaust
The 255DEH is made for a 3500# vehicle and has more exhaust flow.
Duration @ 50 = 203 intake, 216 exhaust
Gross Lift = 434 intake, 467 exhaust.
Those numbers look like they definitely may be into lopey territory.
Any thoughts on these cams or any other cam that works well with a 289?
I'm really not picky, I'm only looking for perfection: A perfectly smooth idle with lots of power!!!
Does anyone know of a cam that offers a smooth idle but a little more power than the stock unit?
From what I've been able to figure out here are the specs for the stock cam for my '66 289.
Duration @ 50 = 198 intake & exhaust
Gross Lift = 368 intake, 381 exhaust
The Melling 24212 I'm now running has:
Duration @ 50 = 218 intake & exhaust
Gross Lift = .461 intake & exhaust
This cam just has too much lope for me but I don't know if it's the lift or the duration (or both) that creates the lope. I'm guessing it's the .461 lift causing the problem.
Three cams I'm considering are the CompCam 240H, 252H, and the 255DEH.
CompCam's DEH (Dual Energy) series has longer exhaust durations and greater exhaust lift so they supposedly work better for cars with restrictive exhaust systems, like ours. It sounds good in theory but I don't know if it works in reality.
The 240H seems to be pretty close to stock. It's a little less on the intake duration but stonger on the exhaust, and has a higher lift on both. It's described as having a "very smooth idle". I like the "very smooth idle" description but I don't know how it does on performance.
Duration @ 50 = 192 intake, 200 exhaust
Gross Lift = 416 intake & exhaust
The 252H is a little stronger all around and the numbers place it about half way between stock and what I'm now running, but it's idle is described as "smooth". Is there a difference between very smooth and smooth? With these numbers I'm a little worried it may not be as smooth as I'd like.
Duration @ 50 = 206 intake and exhaust
Gross Lift = 433 intake and exhaust
The 255DEH is made for a 3500# vehicle and has more exhaust flow.
Duration @ 50 = 203 intake, 216 exhaust
Gross Lift = 434 intake, 467 exhaust.
Those numbers look like they definitely may be into lopey territory.
Any thoughts on these cams or any other cam that works well with a 289?
I'm really not picky, I'm only looking for perfection: A perfectly smooth idle with lots of power!!!