Patrick G

iTrader: (14)

Here's another healthy dyno combo with EPS lobes:

https://ls1tech.com/forums/dynamomet...-sandrail.html

Dom

iTrader: (2)

Those look like great lobes. Great specs by Patrick also.

Ed Curtis

Similar but not the same, as you know. The example I provided was one of the many endurance lobes I use. Profiles using these lobes have been run on countless project engines/cars which were mandated to provide more reliability than the usual XER and Ford (XFI) lobes we had available from Comp. I just needed something a tick softer (?) for better valvetrain control on long term endurance applications. These worked extremely well.


Within the specs noted, I'd bet there would be minimal delta in power one way or the other between these lobes and the ESP lobes, if used with the identical timing events and application. There just isn't enough QC in manufacturing to get them to split the lobe specs "that" perfectly. At least from what my Cam Pro shows.

No matter, it's good to know Geoff is going in this direction. Makes me think it was worth all the expense on our end too! Especially since you guys are seeing great results.



Ed

Patrick G

iTrader: (14)

Billy Godbold really helped us see the light with the Spintron tests. The lobes like the XE-R are good at making power, but were much more sensitive to valvetrain weight and spring selection. This is why they didn't work great on the ET heads with their big heavy intake valves nor the L92 heads without the hollow valve stems. No doubt the XE-R lobes make good power, but these days, savvy enthusiasts want longer spring life, quieter valvetrain, and setups they can run for years without issue. The more endurance-oriented lobes like your 230 lobe and the EPS lobes seem to give up nothing in regards to power, but gain in the areas that customers are asking for. Good stuff Ed.

fortmyerspolice

iTrader: (7)

Mike emailed me back and told me cars coming from other SAE dynos are very close with his STD dyno.

And as far as injector duty cycle, they were maxed out, but it could be the fuel pressure dropping. I would need to install a fuel pressure gauge and see what the pressure does on a long 4th gear pull. If the pressure drops, it is the fuel pump or delivery related. If it holds steady in the 55-60 PSI area, it is the injectors.

FDLS1

iTrader: (2)

After reading this thread I feel disapointed in the power my H/C combo is making. My cam is very similar in duration, different lobes, and lsa. Wondering if I did a swap, would this cam produce more power? I have a Futral F6 226/230 .575/.595 with TEA stage 1 241 heads, the heads are milled 0.030, and I run 0.040 cometic gaskets.

BlkBird2000

iTrader: (10)

Different day, motor, weather, dyno..... Not all H/C cars are going to have 440+ hp. Hell I have a pat g cam in my car and I only make 386/360. Could be a low reading dyno, gears robbing power or some shitty air quality. But my car runs its *** off! I would be into the 11s if I had a 9" or 12-bolt.

Chris Gage

iTrader: (18)

Good job Demetri, glad you talked to Pat like I discussed with you. Graph looks very good.

fortmyerspolice

iTrader: (7)

Thanks man, now I gotta get it ready for Sebring

Dom

iTrader: (2)

I was looking at EPS cams. I wanted something smaller like 222/226 to stay in negative overlap territory. On EPS website it is offered on a 113. What LSA and advance/retard would work best? Probably going to match it up with LS6 heads(should I get them milled?). Already have LS6 intake and going to get LTs before cam. Just need help picking the right valve events.

musclecity85

iTrader: (5)

how would these lobes do in a carbed LS setup due to different valve event requirements? also would the single springs say pac 1518 be just as durable in the long run as a daul spring as far as fatigue?

printmanjackson

iTrader: (1)

this is a great thread

99bluefirebird

iTrader: (8)

I am wondering the same thing. How much would a 222/226 or a 226/230 on these lobes gain over a stock 04 LS6 cam (.550 lift version). And what LSA and advance/retard would be best for a similar table top torque curve.

Patrick G

iTrader: (14)

Here's a thread about an LS6 motor that had the .550" lift cam replaced with a 222/226 115LSA cam with EPS lobes.
https://ls1tech.com/forums/dynamomet...k-results.html

slow.junk

Sorry to dig up this old thread.... but does the OP have any dyno numbers from before the cam? I'm curious what gains could be expected with a setup like this.

Thanks!