|
Re: 499 RB pump-gas cam suggestions 3.23 gears.
[Re: ahy]
#1939950
10/27/15 10:28 PM
10/27/15 10:28 PM
|
Joined: May 2003
Posts: 6,569
Downtown Roebuck Ont
Twostick
Still wishing...
|
Still wishing...
Joined: May 2003
Posts: 6,569
Downtown Roebuck Ont
|
The "new" 528 has 112 LSA for better manners I guess. I believe the "old " 528 was tighter - something like 108 degrees.
Mike at Muscle Motors spec'ed my cam. It is a fast rate MM lobe, 243 duration, .55" lift, 108 LSA. Timing very similar to the "old" 528 just a bit more lift. 13" vacuum. I consider it choppy but I guess that is subjective. If you want it choppy, better to go the custom cam route with tighter LSA. Also, based on Mike's experience, 108 LSA is best for acceleration with this type of combo. I just know it works well... loads of mid range torque and will hang in to and beyond 6000 RPM if needed... eg. to get that last little bit of straight away before the turn without pulling 5'th gear. Actually it's the MP509 that had the LSA widened from 108. The 528 was always wide. 114? Just looked it up. 112 Kevin
Last edited by Twostick; 10/28/15 01:10 AM. Reason: dementia
|
|
|
Re: 499 RB pump-gas cam suggestions 3.23 gears.
[Re: SomeCarGuy]
#1939956
10/27/15 10:40 PM
10/27/15 10:40 PM
|
Joined: Feb 2003
Posts: 12,675
Columbia, CT
moper
I Live Here
|
I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
|
x2. The fastest way to being disappointed driving the car is buying a cam for the sound.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
|
|
|
Re: 499 RB pump-gas cam suggestions 3.23 gears.
[Re: moper]
#1940104
10/28/15 02:45 AM
10/28/15 02:45 AM
|
Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
|
x2. The fastest way to being disappointed driving the car is buying a cam for the sound. X3 I agree as I have a custom grind from Dwayne and it works just as I asked for.  Ron
|
|
|
Re: 499 RB pump-gas cam suggestions 3.23 gears.
[Re: Twostick]
#1940619
10/28/15 08:21 PM
10/28/15 08:21 PM
|
Joined: Jan 2007
Posts: 7,664
IN
ahy
master
|
master
Joined: Jan 2007
Posts: 7,664
IN
|
Actually it's the MP509 that had the LSA widened from 108. The 528 was always wide. 114? Just looked it up. 112 Kevin Thanks for the correction... agree as many have said, the the 528 with 112 may not be ideal for the OP's goals and a custom cam would be worth it.
|
|
|
Re: 499 RB pump-gas cam suggestions 3.23 gears.
[Re: SILVER67]
#1942546
10/31/15 10:22 PM
10/31/15 10:22 PM
|
Joined: Mar 2010
Posts: 147
Milledgeville, (central) Georg...
Bighead440
OP
member
|
OP
member
Joined: Mar 2010
Posts: 147
Milledgeville, (central) Georg...
|
Street driven just under 5,000 miles with:
Weekly Bracket race as well.
505 BBM
Pump Gas
Power Brakes
Comp Cam custom flat tappet by Nick @ Compuflo
1.5 rocker
.585 I, .600 E
260@50 I , 268@50 E
109 CL, 104 installed
3.23 gears, 9-1/2 Dynamic
With the 3.23 it bested 11.57, and couple of 11.59's, otherwise in the heat was an 11.60's car...at a hair over 116 MPH.
Father has same Comp Cam lobe family flat tappet in his 440 pump gas Roadrunner. He's got 3.23 as well.
He's bested 11.85 @ 112
otherwise it does 11.90's to 12.00's
If he'd drive it more that would be dandy. It idles like a pussycat.
Mike
NICE! RIP: Nick Wilson (CompuFlow). 260/268 @.050" flat tappet on a 109LSA makes me reconsider the 255 @.050" street roller on a 110LSA! I won't even have power brakes, I just wanted the vacuum as an indication of idle quality and throttle response. Thanks for the reply!!
|
|
|
|
|
