I have a 440 that I bought 20+ years ago. It was built with the 511 horsepower kit. What was the cam specs? I'm going to need one and I want the same spec cam to replace it. Thanks
511 hp RB kit
- Thread starter Timmayy
- Start date
I think we will need a little more info. 511 CID stroker kit? Who sold it? etc.
Not a stroker. I believe it was a 511 horsepower RB kit. I don't know who did it. It was from 20+ years ago. I have to try and find the old paperwork.
BeepBeepRR
Well-Known Member
The only reference to a 511 HP 440 I find is this one. But when you click on it it mentions nothing about the engine. Other than it being a RB.
https://www.motortrend.com › how-to › 440-duster-mopar-big-block-swap-kits-may-1988-982-1406-36-1
440 Duster: Big-Block Swap Kits for A-Body Mopars - MotorTrend
Jan 1, 2023In a Pro Parts test using a Duster equipped with the 511-hp RB engine kit, this combination was clocked at 10.86 seconds and 120 mph in the quarter. Quite respectable for a docile-appearing Mopar.
I saw that too. I understand it was a kit put together way back in the day. Maybe one of our older gurus would know.The only reference to a 511 HP 440 I find is this one. But when you click on it it mentions nothing about the engine. Other than it being a RB.
440 Duster: Big-Block Swap Kits for A-Body Mopars - MotorTrend
Jan 1, 2023In a Pro Parts test using a Duster equipped with the 511-hp RB engine kit, this combination was clocked at 10.86 seconds and 120 mph in the quarter. Quite respectable for a docile-appearing Mopar.
451Mopar
Well-Known Member
If you have a degree wheel and dial indicator, you can measure the cam to get the cam specs.
We don't have one.
I'm about as old as they come,but aint no guru. Some detective work on your behalf should give the specs on the cam. Good luck! ruffcut
A must have for installing a cam! Otherwise it's a shot in the dark! Get help from a friend who knows how to degree a cam.
I'm sure my buddy has one.
So, looking through old paperwork from 1989 I have a part#.
Direct Connection P4120235. I'm trying to look that up. Any cross reference since DC is no longer a name?
Probly a 292
That sounds reasonable
Researching the hell out of this I found a Mancini Racing cam with that part #.
Specs-
Fits: B/RB 361-440, 284/484 Hyd Flat Tappet
.484" / .484" Lift. 239/239 Duration @ .050" 108 + 0 L/C
One Bolt Pattern
Street / Strip
The only difference was the duration. Going by the original cam, it was 241. Is that a big difference?
Specs-
Fits: B/RB 361-440, 284/484 Hyd Flat Tappet
.484" / .484" Lift. 239/239 Duration @ .050" 108 + 0 L/C
One Bolt Pattern
Street / Strip
The only difference was the duration. Going by the original cam, it was 241. Is that a big difference?
BeepBeepRR
Well-Known Member
call them before you order i waited a 2 months for a cam that never came. Had to get a refund.
I'll bet Summit Racing has a cam with those specs.
451Mopar
Well-Known Member
From the 1996 Mopar Performance catalog, the Mopar P4120235 is the 284/284 advertised duration, 0.484"/0.484" lift 108 LSA purple shaft cam.
I still have one of those around from back then. I was thinking of the 237. A .484 in a 511hp 440 is hard to believe
They were out of stock.
Is going from a duration of 241 down to 239 going to make a difference? This is a street car that will maybe hit the strip once in a great while. 8 3/4 suregrip has 323s.
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