So I've been searching around for a little bit with little luck trying to find out how the hellfire cam works in the 5.7 with stock heads. I wanted to know what kinda of gains it will give by itself. I have found a bunch of people who installed it with new heads and long tubes and got impressive numbers.
I want to keep my mds and i found a few people who have kept mds with no problems.
If anyone has dyno numbers or improvements at the track thats what I am looking for.
Probably about 40-50rwhp on the stock heads.....less if you keep the stock exhaust manifolds.
9515 Detroit Rd,Cleveland Ohio 44102
440-787-7235 8am- 5pm
can the hellfire retain mds?
its a pretty nice cam however. seen some good results with it
'99 FRC Corvette - Far From Stock
'06 Silver R/T R&T Fully Loaded [SOLD]
->FRI'd with Street/Strip Heads + Scud Camshaft<- CTP Spacers + 09 Eagle Manifold
-FRI Custom Stepped LT Headers--Getrag 3.06 LSD--DIABLOsport Predator--Powerbond 25% Underdrive Pulley--ProTorque 2800
-FRI PolyMounts--GSM Cold Air Intake--180Tstat--RTJunkieNOESP--MoparTCM--PEDDERS Touring Kit--Billet Tech Throttle Body
Best ET: 12.490 sec @ 113.58 mph +400 DA, 4000 RaceWeight
If you can afford not to have MDS, do it. NO valvetrain noise. Man i hated those noisy MDS lifters.
2012 Dodge Charger
PB 1/8 run: 7.92 @ 86.92 * 1.76 60' on street tires with DA at 1786 - All Stock
Custom tune by Lxmodguy, Stage II VB, Corsa Extreme Exhaust and LMI true CAI
That cam rally wants more up top than the stock heads will give it. If you are set to stick with stock heads for some time, then go with a sidewinder.
anyone able to quote the base specs on that cam?
"Hellfire - (5.7 - 6.1) Small lifts with healthy durations make this a solid midranger performer that should work w/ MDS. This thing will let people know you have a cam because its fairly lopey and even more so in a 5.7 while in a 6.1 its not so bad. Does very well with power adders such as turbos, blowers, and nitrous.
MDS Friendly - YES
Tuning Considerations - B&G, SMT6, and PSCII (*Note - tuning the 5.7 will be more of a task while the 6.1 isn't bad at all)
Specs - 216/220, 528/531, 114 LSA"
This is from FRI's subforum.
i know this doesnt quite belong....
but what do you get out of much larger exhaust duration?
my custom cam has like ...(ugh now i have to go dig up the card..)
WAY more exhaust duration and lift than the intake.
its definately a top end "fat" cam, and the lifts in general are large, but what makes it distinguished from what ive seen is the longer than average exhaust numbers.....
my speed shop picked it for me, and im just curious about what you would specify big exhaust for.
have i been redundant enough? lol
dont get me wrong, i love the cam, but a lot of the numbers i see have the exhaust and intake numbers pretty similar, unlike mine.. but let me tell you, it tears
i idid request to have a lopey cam, and im wondering if they specified this as part of it, or if that has more to do with the ICL
this peaks my interest and spurs my thoughts because of the numbefrs i see on the hellfire. similar trend to mine even tho i think mine has a little bigger lifts...
running great with my decked heads, but like i said, im craving a verter or some gears for the down low
Last edited by dudeiwin86; 12-01-2008 at 11:45 PM.
having a larger exhaust profile helps for engines with artificial atmosphere, AKA boost, or N20. since these engines dont have to worry about pulling the charge into the cylinder, as its pressurized, but you can only cram so much air through an open exhaust valve given pressures in the cylinder. this means the exhaust duration has to be longer. make sense? this is a somewhat basic explanation, someone more knowledgeable on cams can better explain.
Being in Southern California, how difficult would it be to pass the smog dogs with one of these cams?
2007 Dodge Charger Daytona R/T Sublime #896
-332rwhp/370ft/lbs on Dynojet,AFE Stage II,custom tune,BT Oil Catch Can, Flowmaster 40s, no resonators,JBA shorty headers, HHP cats/midpipes,
- Best E.T to date: email@example.com
same as stock from all of my experience.
mine with the super big exhaust lifts (if that even makes a difference) passed the tailpipe sniffer with high flow cats in.
for whatever reason the ob2 wouldnt register... might have to do with custom tuning? i dont know... but the place was like "oh well, ive seen this on a lot of new cars.... we can do it this way..." and did it old school... i didnt complain.
either way..... passing is no problem as far as emissions go