98ws6blk

Just got the dyno results from my Head/Cam swap. This is my first dyno, so I don't have any before and after. Major mods in my signature.

Before anyone flames me, I know these numbers seem way too high for this combo. I assume a happy dyno, but it's just a tuning tool anyway.

I did some minor diy porting to my heads: blend seats, smooth rocker bump and got a competition valve job. I milled them 0.025 and used a 0.040 gasket, so it has a lot of compression (aprox. 11.5).

Big thanks to Martin Smallwood! (tick performance) for the custom cam. I'll keep the specs quiet ; )

Kingc8r

iTrader: (21)

Nice numbers.

thunderstruck507

iTrader: (18)

Love the torque curve! Numbers definitely seem high for home port heads but who cares

Why the secret on the specs, usually he's pretty open about that kinda of thing?

98ws6blk

No real secret on the cam. Basically a SNS stage 2 just tweaked a little to match my high compression.

HCI2000SS

iTrader: (2)

Very nice! Now it's time to run it at the track, and see if the dyno numbers match the trap speeds

30th t/a

iTrader: (51)

Yea the numbers are extremely inflated. Those types dyno's seem to always give out very generous results.

98ws6blk

How can you tell what type of dyno it is?....I'm not sure myself.

firefighter813x

iTrader: (6)

This is what LS1's make with a LS6 intake now??? Seems high...

98ws6blk

Outside of my high numbers, does my dyno chart look about right in terms of where the HP/TQ sits relative to RPM?

HCI2000SS

iTrader: (2)

Yes, that looks totally normal to me. Just a FYI here, back when I has my old LS1 setup I made 405 rwhp on one dyno, and 460 rwhp on another, and guess what... both were Dynojet dynos to boot lol. I think you can see my point lol

98ws6blk

Cool. Thanks! Yeah, I just want to make sure everything is normal : )

manfred717

iTrader: (9)

Nice smooth graph, now take it to the track and see what she does!

danger ds

iTrader: (1)

Would like to see some track time, congrats on the setup.

30th t/a

iTrader: (51)

I'm not sure what kind of dyno that is. Yes I think your HP & TQ graph looks inline with the RPM.
Here are two examples that I found both showing extremely inflated torque numbers and HP numbers using the same type of dyno that you used. I know a dyno is for tuning but I also like to know what kind of power Im putting to the ground and I would like that number to be accurate.

https://ls1tech.com/forums/forced-in...ers-today.html

https://ls1tech.com/forums/dynamomet...cam-guess.html

98ws6blk

[QUOTE=30th t/a;17703950]I'm not sure what kind of dyno that is. Yes I think your HP & TQ graph looks inline with the RPM.
Here are two examples that I found both showing extremely inflated torque numbers and HP numbers using the same type of dyno that you used. I know a dyno is for tuning but I also like to know what kind of power Im putting to the ground and I would like that number to be accurate.

Thanks man. So you are guessing these are the same dyno types based on the similar look to the software interface in the picture I guess...

30th t/a

iTrader: (51)

That and how they all have very inflated numbers. 470rwhp 462rwtq is what a strong 383 stroker or even a mild 402/408cid would put down.

I'm sure your car runs strong though. Should definately get you in the 11s if you hook up.

KCS

iTrader: (20)

The 460ft-lbs of torque is pretty high for a 346ci engine on pump gas, but as you said, its just a tool. A before and after would have been good to see.

Sales@Tick

iTrader: (3)

It's a custom SNS Stage 2 cam. Valve events are identical.

I would expect this set-up to make 420/390-440/410.

Rise of the Phoenix

iTrader: (27)

Two things that get people more worked up than anything are:

1) politics
2) dyno numbers