5.7 comparisons... same cam...the rest? Judge for yourselves

**monty1269** · 07-30-2009, 03:02 PM

Okay... enough people have been inquiring about the debate and differences between my car and BigHemi06's (Bryan)...

We both have the exact same cam (Spartan) LSA113... I'll include my spec's and dyno as well as Bryans. you guys can do what you want with this information and make your own decisions what components to put together; cuz' *I'm* clueless!

My specs:
AirHammer intake Gen1
BT ported TB
Stock 5.7 intake manifold
Spartan cam LSA113
Stock heads
SRT headers
6.1 MAgnaflow hi-flow cats
SLP LM 2 catback (5.7)
Johan tuned.

Here's my latest graph:

And Bryan's spec's:

CF AirHammer
BT ported TB
SRT intake manifold
Spartan cam LSA114 <-----
LMS ported heads (5.7)
SLP longtube headers and cats(?)
SLP LM1 catback
and yep...Johan tuned.

and graph:

**SLICKHER1** · 07-30-2009, 03:04 PM

can you overlay them? You have a good bit more tq I see. What is the ICL on the two camshafts?

**BigHemi06** · 07-30-2009, 03:05 PM

my cam is a 114LSA

**monty1269** · 07-30-2009, 03:07 PM

hhhhmmm... first time I've REALLY sat down and compared exact values at certain RPM's... Looks like on MY car that everything is a bit higher along the entire low-rpms range.

, BUT THEN.... ut-oh.. at 4600 Bryan's just keeps on climbing.

Attributed to the intake manifold? or the heads?

**BigHemi06** · 07-30-2009, 03:08 PM

SRT manifold push all my curves back

**elcobra44** · 07-30-2009, 03:09 PM

About the power difference you'd expect from the heads and headers.. Bryan's torque is a little lower than I'd expect though.

**monty1269** · 07-30-2009, 03:10 PM

Originally Posted by BigHemi06

SRT manifold push all my curves back

You mean push them higher into the RPM range? i.e. right in the graphs?

**elcobra44** · 07-30-2009, 03:11 PM

Basics... Longtubes are better for highend performance, while shorties are good for the low end.

**monty1269** · 07-30-2009, 03:13 PM

Originally Posted by elcobra44

About the power difference you'd expect from the heads and headers.. Bryan's torque is a little lower than I'd expect though.

My thoughts too!! We're pretty much dead-nutz on the TQ (peak) value...But compare the curves; my 3200 vs Bryan's 3700 rpms = 350TQ. *I* thought it would be the other way around...??

**BigHemi06** · 07-30-2009, 03:13 PM

I lost HP and TQ all the way up to 4500 RPMS going to the SRT intake

**monty1269** · 07-30-2009, 03:13 PM

Originally Posted by elcobra44

Basics... Longtubes are better for highend performance, while shorties are good for the low end.

I ALWAYS get those mixed up.

**Mister HP** · 07-30-2009, 03:18 PM

Your actually making good low end torque compared to Bryans, you just need some better airflow to see an increase in the power.
Bryans didn't seem to carry out a whole lot farther than yours with the addition of the 6.1 intake, so I don't know if you would want to consider that extra expense?

Ed