Paint_It_Black

iTrader: (1)

Are those both 346/347's? N/A?

JaSSon

iTrader: (11)

This thread is a trip. Who cares, If a combo works it works. My car is faster every time I go to the track on a REVERSE SPLIT CAM setup that is more than 5 years old. Same springs same everything. Put a bullet in this one.

Paint_It_Black

iTrader: (1)

Reverse splits can run, people have run decent with them. You could run faster though.

JaSSon

iTrader: (11)

I will run faster, Im getting drag brakes and finally will scale the car. I want mid to high 1.3 60's off the brake. Whats the record for a Reverse Split na stock block.

Johnnystock

iTrader: (6)

If I ever get a 460rwhp car with massive torque, I will be very happy. And I think everyone would be!!

TXZ28LS1

iTrader: (5)

**** jaSSon, i think you probably would be the fastest man!!

thunderstruck507

iTrader: (18)

I don't see why so many people are getting worked up over this at all...

If I had it to do over I'd get a different cam (for several reasons) but I don't get why people have been so pissy about this subject lately.

IMO until someone man's up and does a back to back comparison it serves no real point other than ego stroking and being "right".

Just my $.02

PREDATOR-Z

Guys,
I think that in all of this the main point is lost.

Reverse split have a place in certain combos for undercurve power. The myth that they take a nose dive after peak has been dismissed. That depends on the VEs and it can carry well into the rpms.

But there are limits, at a certain point exhaust will have to be increased.

Now, the hole discussion and argument was that RS cams are worthless. They are not.
It all depends on the combination of parts at use.
It is just that some poeple are so boxed in their beliefs that they utterly dismiss out of box thinking.

Key word here is not RS or SS, key word is combo. Combo is where we should focus and that is where we make decisions on the cam specs. (cam specs being lobes chosen, durations, LSA and ICL (basicaly VEs).

To sum it up, I never said RS cams are the best in an all out optimum combination. I said that RS cams have their place in certain combinations. That is also relative to the powerband desired and (important) which part of the band you want to use. (this has been proven)

I hope this clears it a little.

rmtt

iTrader: (8)

I think it sums it up perfectly. I could have went with a different standard split cam, but wanted to try something different. I wanted Tq early, didn't really want to spin the engine too high, and decent power up top.

I had this cam spec'd for "cam only". For Cam only, I thought it made nice power and had a good graph.

I wasn't really sure what would happen once I added the other stuff. I was pleasantly surprised. The car did what I was asking for the first time, and even more than I could have expected after the last set of mods.

I'm happy with it. But I am in no means saying that others should go the route that we did. I just put this up there for those who already had a RS cam and were thinking about adding heads.

Titanws6

iTrader: (35)

Well I'm glad you posted as well as Predator giving his insight to why he designed and spec'd this cam. There are far and few graphs on the El Torro and am looking forward to the nice torque it provides. This powerband falls right in line with my style of driving, so I know it will work well for me.

Oh yeah, UPS just dropped off the heads, I will be dropping you a PM soon Pred on my build, looking forward to talking with ya.

66deuce

iTrader: (1)

from my limited knowledge of the physics of what actually happens inside a running motor, i'm in the SS camp..but you can't deny the power that thing makes..
if you follow the Engine Masters competition,the last winner ran a crazy RS..
plus the first winner,Joe Sherman, ran a single pattern cam but with 1.6 rockers on the intake and 1.5 rockers on the exhaust..so in effect made it a very small RS off the seat..the cam actually used intake lobes for both the intake and exhaust..things that make you go hmm..

Patrick G

iTrader: (14)

Engine Masters Challenge is a very special competition that awarded the prize to the engine combo that made the most power between 2500-6500 rpm. Basically, all the past winners proved that whoever made the biggest power at 2500 rpm usually took home the prize.

Making big power at 2500 rpm takes a very different engine combo than an all-out race motor. Yes, reverse splits have their place in this (low) rpm-limited competition.

In 2009, the rules have changed to a 3000-7000 rpm window. You may start seeing some different combos because of the rule change. Here's a funny story. To show you how much the cam timing is compromised to work well in the 2500-6500 rpm competition, the small block Ford from The School of Automotive Machinists is reported to make over 100 hp more (with no other changes), just by installing a cam biased more toward making maximum power. Just a hint (it wasn't a reverse split cam).

1989GTA

I was talking with Joe Sherman about his engine master motor that had the single pattern camshaft. Anyways he told me how much more power it made when he switched camshafts afterwards back at the shop. I don't remember how much more power it made but it was quite abit. By the way I'm installing the crankshaft from that motor in my new build. This just follows what up on what Patrick said.

66deuce

iTrader: (1)

yep,i realize the Engine Masters deal is a little different than what you would normally see on the street..i have wondered what those motors would put out with a few changes to them...

PREDATOR-Z

Nicely put, the RS cam has its "parameter" of use, it can be stretched a little further than 6500 in LS motor.
What I like about them is the high average trq and Hp that can be harnessed, I find that characteristic very suitable fo street and occasional strip.
As Patrick mentions, RS here is not about making all out maximum power (by doing that you are trading off something else) but about overall power.

jimbo98z

iTrader: (3)

You keep going on and on about if there were no restrictions this, if you had the perfect setup then blah, I like bandaids yada yada. Whatever. Not everybody has the money to just throw the best parts that they can find at the car. You keep trying to poke holes in a reverse split because it's "only good for certain setups", then you go on to say that for your specific setup a standard split/square cam would make more power. You're comparing one specific setup (OP's setup with a reverse split) and your setup (bigger valves, ported intake, etc etc). Then you say that given a motor that already has all these other high performance parts that the reverse split is a bad choice. Different heads like different cams. Different people have different heads, intakes, exhaust, funds available, goals, etc. This whole thing is a pointless argument. You aren't and can't compare apples to apples when you've got one cam that's designed to work with one head and another cam that's similar but reverse split designed to work with another head. I'm not going to say one way or the other about reverse split, because honestly I don't care and I think you should run what makes power with your setup.

[/rant]

And as far as your "pissing outside" statement, most people **** inside. In the toilet.

MrElectric03

iTrader: (71)

What do you consider massive torque? My setup made pretty good power, especially when you consider it was a new motor with budget minded heads. I am running just under 11.5:1 compression and as the cam has a 112+4 lsa it has a 108 ICL so it makes its peak kind of low but the torque is awesome and the car runs great.

chrs1313

iTrader: (24)

why build a 347 with budget heads?

Q8CamaRo

iTrader: (4)

good work dude
i trust you blindly

ILLWIN

iTrader: (35)

maybe I missed it, but is the car a 6 speed or auto?