allngn_c5

iTrader: (3)

Dynamic Compression Ratio

8.6 is a very good DCR 9.0 is too high IMO SCR or Static compression Ratio should be in the 11 to 1 or 11.8 to 1 area for 93 octane gas with a good tune in place. Your cam has a lot to due with your DCR. I was wondering what the DCR came out with using the cam you have.

ArklaTexan

iTrader: (24)

He has the same setup as I do, same heads fast etc. The only difference is my cam is quite a bit larger and I hit 480 with my ls1 gto

98camaroLS1M6

iTrader: (35)

What cam do you have? What was the torque?

ArklaTexan

iTrader: (24)

I have the HPE Mega Death 244/242 .612/.610 112lsa

I may not recommend Chuck for Tuning anymore but this cam sure is nice

I am putting down 480rwhp and 460tq NA

The cam was designed to get the most out of stock casting heads, with a good tune it drives very well with a nice rumble at lights

ScreaminRedZ

iTrader: (3)

Damn good numbers! I know a certain Camaro owner with a "similar" setup that would be extremely jealous of those numbers

red fury

iTrader: (1)

So surely you flycut the pistons if you are indeed running the 59cc 243 PP heads.....

I wouldn't think the original poster would need to flycut with that PP cam using stock GM gaskets.

ArklaTexan

iTrader: (24)

No flycutting here. I have Patriots previous castings that used welded chambers instead of milling. All the other head manufacturers I talked to would require flycutting, going with a different piston or custom heads.

98camaroLS1M6

iTrader: (35)

460rwtq SAE?!!!! Wow, what's your compression?? Definitely some of the highest tq numbers I have ever seen for a 346!!!!

cwalsh

iTrader: (9)

Here is the graph. I used a stock MLS GM gasket #12498544. that was teh set p/n

I did not have to fly cut my pistions either.

As far as DCR I dont really know. I figured my static compression should be in the 11.1:1 range

blu1

those are some stout curves from a budget setup!

ArklaTexan

iTrader: (24)

I am not sure what the compression was but I thought my tuner said 11.1 + I have only seen one other GOAT owner with similar numbers and his was anything but a budget build. I think he used Trick Flow heads and those expenseive rockers and all.

98camaroLS1M6

iTrader: (35)

I know someone that made 425/405rwtq with the patriot 5.3s and a 224 cam through an auto. These heads seem to make similar power to the PRC 5.3s

Any idea on your gas mileage with this setup?

BlackScreaminMachine

iTrader: (17)

I'll make sure I'll PM him.

PewterScreaminMach

iTrader: (7)

Too late, I already saw it.

But seriously, I don't think I'd ever take a chance with another Patriot product. Let's compare our two setups:

449/425 to my 400/367. Same heads, only his are milled to 59cc vs my 62cc.

Now he's got a slightly larger cam, more compression, YT rockers, a 90/90 setup, and is running through the stock drivetrain unless I'm mistaken.

I've got a slightly smaller cam, less compression, no rockers, stock intake/TB, and am running through a 12-bolt with 4.10s and a 3.5" aluminum driveshaft.

To me, those numbers sound about right. Give me a 90/90, more compression, rockers, and run me through a stock driveshaft and 10-bolt (or stock C5 setup) and I don't think I'd be far off, if at all. My big question is why the hell is my torque so low?

cwalsh

iTrader: (9)

It is a stock drivetrain. I know when I dropped it off at PBJ he told me to expect 410 at the wheels. Needless to say I was pretty d*** happy!!

Chris

PewterScreaminMach

iTrader: (7)

I would be pretty happy with that, as well. Even with all the extra stuff you have, I'm pretty sure my setup wouldn't quite stack up to what you're putting down. If you don't mind me asking, how much did you spend on the H/C, 90/90, rockers, and the rest of the setup? Feel free to PM me if you'd like, just curious.

What bothers me about my setup is that I tell people I have a H/C LS1, and then I have to explain why it's such a weakass H/C LS1. I'd absolutely rather have stock heads on this car right now, just so I could say it's cam-only and not be embarrassed by the numbers it's putting down on the dyno and at the track.

ArklaTexan

iTrader: (24)

I think he was refering to my numbers 480rwhp 460tq

PewterScreaminMach

iTrader: (7)

Who was referring to your numbers?

Brads LS1 02Z

iTrader: (16)

Could you get us a sound clip?

Bet she sounds great!

ArklaTexan

iTrader: (24)

I assume ScreaminRedZ was, as I said I had a similar setup as the OP. Then they asked about the tq etc.

But if not no big deal