DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    Opinions on camshaft please
Go
New
Find
Notify
Tools
Reply
  
Opinions on camshaft please
 Login/Join
 
DRR Sportsman
posted
I posted a while back about cam profiles for my 582 Im building and got some very helpful info. I stumbled on this cam http://www.lunatipower.com/Cam...tNumber=50256LUN&t=d
How would this do in my 582 Rons alky terminator, Dart 355 cnc heads, 14:1 comp, going in a 1950 pound 4-link dragster, 1/8 mile only. Im looking to turn no more than 7400 rpm. 1.7 rockers, Edelbrock 2927 intake. Thanks
RW
 
Posts: 249 | Location: Loxahatchee | Registered: March 16, 2002Reply With QuoteReport This Post
DRR Pro
Picture of RacerVX54
posted Hide Post
http://rehermorrison.com/


"Just Shut Up and Race"

Brian Martin
Martin Racing
5.50 126
 
Posts: 1421 | Location: Va.Beach .Va | Registered: August 03, 2005Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
Thanks for responding Brian. The reason I like this cam is because it basically mirrors the -116 RM cam in all the valve timing events and is on a 114 lobe center. Was just a little concerned about the relatively low exhaust lift.
 
Posts: 249 | Location: Loxahatchee | Registered: March 16, 2002Reply With QuoteReport This Post
DRR S/Pro
Picture of Lenny5160
posted Hide Post
When I first read your post, I compared it to the RM -116 also. I've run that RM cam and a very similar Bullet grind in a 505 and a 565, and both of those ran pretty well for what they were. Those were both Ron's injected as well. I did have 1.8 rockers on the 565.

I don't think I'd run the lash as loose as the card says, especially the exhaust, so you could gain a fuzz of lift and duration there.

I'm far from a great camshaft mind, so I usually don't reply to posts such as this. If it were mine and I were buying a cam, I'd look for something a little bigger but if this cam were sitting on the shelf it would work just fine.


Tony Leonard
 
Posts: 3239 | Location: Inver Grove Heights, MN | Registered: March 18, 2004Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
quote:
Originally posted by Lenny5160:


I don't think I'd run the lash as loose as the card says, especially the exhaust, so you could gain a fuzz of lift and duration there.


I agree on the lash, seems loose to me. Thanks
RW
 
Posts: 249 | Location: Loxahatchee | Registered: March 16, 2002Reply With QuoteReport This Post
DRR S/Pro
Picture of SCDIV1
posted Hide Post
I run the -116 cam and have zero issues running it with moderate spring pressure (275-280 on the seat)......to 7400rpm

I set the lash at .020-.020 cold....

Jesel Sportsman Rockers.... 1.75-1.75 and Isky lifters......



It is an Erson grind, I believe and I've used other R-M cams also with good results....
 
Posts: 2735 | Location: Where ever I am, I'm here and it's me | Registered: March 15, 2007Reply With QuoteReport This Post
DRR Pro
Picture of Rymo
posted Hide Post
i run a similar combo on gas with a very similar cam with .026 lash cold setting. 275 on the seat, have you done any a b testing with the .020 vs .026 lash settings or is this more alky related? I'd be curious.


Ryan Fasano

2014 Byron Overall Track Champion
Byron's actual elevation is 730' because that matters more than winning anything ever....
 
Posts: 535 | Location: wisconsin | Registered: January 08, 2008Reply With QuoteReport This Post



DRR S/Pro
Picture of Lenny5160
posted Hide Post
The lash on the card is the hot spec. I also do .020 cold, which should end up being about .024 when hot with an iron block and aluminum heads.


Tony Leonard
 
Posts: 3239 | Location: Inver Grove Heights, MN | Registered: March 18, 2004Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
Thanks to all who responded. Was trying to keep thread geared to meth cam recomendations rather than lash settings although some really good info so far. Thanks
RW
 
Posts: 249 | Location: Loxahatchee | Registered: March 16, 2002Reply With QuoteReport This Post
DRR S/Pro
Picture of SCDIV1
posted Hide Post
I have run both with the 116 cam. Alky injection and gas carb. Runs fine with either.
 
Posts: 2735 | Location: Where ever I am, I'm here and it's me | Registered: March 15, 2007Reply With QuoteReport This Post
DRR Top Comp
Picture of Curly1
posted Hide Post
I would call Bullet and talk to them. Tell them what you have and what you are wanting to improve on.


https://postimg.cc/gallery/np3zpruo/
"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.

Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

4X NE2 CHAMPION. 2020 TDRA NE2 Champion
 
Posts: 4269 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
Thanks for the info guys. Just trying to optimise this combo first time around. Have already been in contact with bullet and others. Just want to confirm what i have been told from these guys.
RE
 
Posts: 249 | Location: Loxahatchee | Registered: March 16, 2002Reply With QuoteReport This Post
DRR Sportsman
Picture of Mike Frizie
posted Hide Post
bullet x2


Michael Frizie
ET 2471
 
Posts: 637 | Location: Winston, GA | Registered: April 10, 2002Reply With QuoteReport This Post
DRR Sportsman
Picture of Ballz
posted Hide Post
I found Bullets Ramps to be to agressive. Actually slowed my car down a little. Your results may obviously vary.
 
Posts: 313 | Location: west palm beach, fla. usa | Registered: June 27, 2001Reply With QuoteReport This Post



DRR Elite
Picture of adv ET 266
posted Hide Post
I had Comp grind me a cam that worked pretty good in my 582.



2005 2000lb 4 link dragster
home brew 582 BBC Dart 355
1.058
2.98
4.629@149
6.094
7.310@185

 
Posts: 12175 | Location: 33463 | Registered: February 04, 2004Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
I have run comp cams since I have been racing (a long time). The last two days I have tried to call comp to order a new cam. Get message all techs are busy. I hold for 15 miniutes three different times and push 1 for a call back. Never got a call back. Called bullet today they answered right away and I ordered a cam
 
Posts: 11 | Location: bakersfield ca | Registered: December 05, 2010Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
When I built my 582, Dart 355, Apd alky carb, I talked with Reher and they convinced me I needed there 420-117, it's 288/308. I didn't like all the extra exhaust duration but was told it would work fine. This was a 2350 doorcar, ran 5.11 in good air at the first of the season, as it got hotter car slowed to 5.20s and was very inconsistent. Pulled cam out in July and put a Comp in it 285/292 and ran 5.11 in august heat and worked well. I ran the 420-116 in my 548 in the dragster on race gas ran 4.83@142 and was deadly..... so the 420-116 or something close would prob work , with injection you could prob go a little bigger over a carb motor, I think doorcar seem to like a little less duration than dragster from what I've tried.
 
Posts: 24 | Location: Peterman, AL | Registered: November 16, 2010Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
quote:
Originally posted by adv ET 266:
I had Comp grind me a cam that worked pretty good in my 582.


Hi, Can you share the cam specs/cam card you used for the 582 that went 7.31 @185?

Thanks, David
 
Posts: 1 | Location: CT | Registered: May 13, 2011Reply With QuoteReport This Post
DRR Elite
Picture of adv ET 266
posted Hide Post
quote:
Originally posted by dbochan:
quote:
Originally posted by adv ET 266:
I had Comp grind me a cam that worked pretty good in my 582.


Hi, Can you share the cam specs/cam card you used for the 582 that went 7.31 @185?

Thanks, David

I responded to your pm. Let me know how it runs



2005 2000lb 4 link dragster
home brew 582 BBC Dart 355
1.058
2.98
4.629@149
6.094
7.310@185

 
Posts: 12175 | Location: 33463 | Registered: February 04, 2004Reply With QuoteReport This Post
  Powered by Social Strata  
 

DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    Opinions on camshaft please

© DragRaceResults.com 2024