Cam recommendation
12-02-2002, 11:33 PM
#12
Registered
Do you guys think that the Crane 139741 cam for ITTLFLI's 468" engine might be a little too large---especially for a blower engine? The 139741 cam is 236*/244* @.050" lift and normally comes with a 112* lobe seperation unless you special order it to have it ground on 114* lobes. I use those same duration numbers with a hydraulic roller in my 540" naturally aspirated engines. What do you guys think?
12-03-2002, 07:05 AM
#13
~~~~
Charter Member
According to B&M, a wider LSA is better for blower applications.
They state that a 114 LSA is desireable. I don't know if 2 degrees,
will make that much difference. I am learning too.
They state that a 114 LSA is desireable. I don't know if 2 degrees,
will make that much difference. I am learning too.
12-03-2002, 07:48 AM
#14
Registered
Thread Starter
Good info!! Keep it coming!
This project is some what cost sensitive. I am trying to use the parts I already have as far as carbs. I think I am leaning towards the crane 731 or 741.
Allan4's set-up with the 731 made the flatest TQ curve I have ever seen!
Anyone have a decent set of hy. roller lifters they want to sell?
This project is some what cost sensitive. I am trying to use the parts I already have as far as carbs. I think I am leaning towards the crane 731 or 741.
Allan4's set-up with the 731 made the flatest TQ curve I have ever seen!
Anyone have a decent set of hy. roller lifters they want to sell?
12-03-2002, 03:47 PM
#15
Guest
Posts: n/a
KAMMA YOUR CAM IS PERFECT FOR YOUR RPM RANGE AND INCHS ,
ITTFLI-DON'T USE SOMEONES USED LIFTERS ,YOU JUST SAVING ALITTLE AND RISKING THE MOTOR ,THE MIGHT HAVE BEEN FLOATED OR ANYTHING JUST DON'T TAKE A CHANCE ,GET A GOOD NEW SET IF YOU NEED SOME PM ME I'LL PRICE YOU OUT AS CHEAP AS POSSIBLE
THE 112 CAM WITH A BLOWER WORKS GREAT AND MAKES TONS OF POWER JUST DON'T GO ANY LOWER AS THE OVERLAP KILLS YOU
ITTFLI-DON'T USE SOMEONES USED LIFTERS ,YOU JUST SAVING ALITTLE AND RISKING THE MOTOR ,THE MIGHT HAVE BEEN FLOATED OR ANYTHING JUST DON'T TAKE A CHANCE ,GET A GOOD NEW SET IF YOU NEED SOME PM ME I'LL PRICE YOU OUT AS CHEAP AS POSSIBLE
THE 112 CAM WITH A BLOWER WORKS GREAT AND MAKES TONS OF POWER JUST DON'T GO ANY LOWER AS THE OVERLAP KILLS YOU
12-03-2002, 07:03 PM
#16
~~~~
Charter Member
The longer the exhaust and intake are open at the same time, the more of "the useable" air/fuel mixture is blown out the tailpipe.
This is the reason B&M/Holley recommends the wider LSA of 114 degrees.
Less sooty black transom effect maybe?
The 112 degree LSA of the #731 and the #174 cams makes good sense to me in regards to future use.
I am in the thinking stages of removing my B&M 250 and going N/A. With the 112 LSA, this cam might be better as an all around cam in the event that you wanted to go N/A.
I am not sure of the other numbers (lift, etc.)of the #731 and the #741 have in regards to this application.
Any thoughts?
This is the reason B&M/Holley recommends the wider LSA of 114 degrees.
Less sooty black transom effect maybe?
The 112 degree LSA of the #731 and the #174 cams makes good sense to me in regards to future use.
I am in the thinking stages of removing my B&M 250 and going N/A. With the 112 LSA, this cam might be better as an all around cam in the event that you wanted to go N/A.
I am not sure of the other numbers (lift, etc.)of the #731 and the #741 have in regards to this application.
Any thoughts?
12-04-2002, 07:41 AM
#20
Registered
Join Date: Feb 2002
Location: KY
Posts: 1,099
Likes: 0
Received 0 Likes
on
0 Posts
Talk to Dean Nickerson nickersonperformance.com in my previous 502 I had one of his blower cams in a natural 502...it worked great. It was a solid roller 252/[email protected] .680/.708 lift on a 114 CL. The ramps are mild on Dean's cams so they don't break parts.
