kid6725

That car is going to be awesome! If u can post up a sound clip when u get it running Id love to hear those headers.

J-Rod

If you are in Australia then go see Sam at Sam's Performance in Sydney if you want to do the 8TB setup. Also, I think he is on top of his game in Australia as far as tuning goes...

Your car is quite nice, although for a 346, I think the header primaries are too large. I think low end may suffer a bit. But, the extremely long primaries may help offset them. How long are the tubes BTW. I am very impressed by the fact you fabbed those yourself.

What are your power goals for the car?

If you want a cam to make max power with stock heads, etc... vs a big lumpy cam, those could end up being different set ups... Max power with a stock intake and stock heads might suprise you. Of course the fact that the car is so light, you can end up way overcamming the car so it makes a big peak number, but low end power can end up suffering...

68birdls1

iTrader: (46)

man, i thought my 68 firebird with a ls1 was gonna be bad, but this thing is just gonna be sick! great job man and keep up the good work!!

LS1 Cobra

Yep, Sam has a good reputation down here. A friend of mine is getting Sam to do a MAFless Edit tune on his LS1 powered Cobra. Sam is a long way from me though. I'm In Melbourne and he's in Sydney and there's about 600 Miles between us.

Sam makes an 8 TB set up but I plan to machine up my own manifold and throttle body set up. It's pretty straigtforward for an LS1 since the ports are symetrical, there is no coolant or oil running through the intake and the intake can be made in 2 halves since there is a cover plate over the valley.

I built the headers with 1 7/8" primaries because initially I was planning on a blower. I think the primaries are arround 30-32" long from memory. I've built most things on the car myself as that's half the fun of doing one of these cars.

I figure a motor that makes good power from mid range up would be better for traction. Loads of low down torque is just going to turn the tyres off the mark.

Emissions aren't such a big deal. I only have to pass the tests when I get the car first registerd and I'll do that with the stock cam in place. If I have trouble down the track and need to be retested it isn't a big job to swap the cam back.

As for Power figures and goals for the car??? Carroll Shelby the Father of the Cobra used to say "If more is better then too much is just right" I think that pretty much sums up the thinking behind the Cobra.

Cheers

Mike

OWENMUSTANG

iTrader: (2)

mike, that thing is SWEET! as for your cam choice, the emissions might be the
only thing that will give you problems.. any of the 224 cams should work great
in your application..

and you have built most of this yourself? unreal!!!

Mooobunnny

iTrader: (1)

I would go with a little more cam than a 224 in a Cobra...like a 232/232 or even the TSP 231/237 ......it would make it a little more fun IMO.

D Rock

iTrader: (7)

I say go with a 224/224, it will give you a good all around powerband not just up top, should make it a beast on the street with the light weight and all.

black_z

iTrader: (4)

I would go bigger than 224. Somewhere in the 230 duration. Do you ever plan to spray it?

Sanders

Gotta go bigger than a 224, I don't understand why you guys are recommending that cam for his application. Thats a baby cam nowadays. I'd go with a 228 or up. You won't sacrafice any drivability with that size of cam either. Not saying the 224 cam is a bad cam, in fact it is a great cam, but for this guys purpose, I would go at least with a 228 or up.

By the way, that is an BAD *** car!! Great job!

LS1 Cobra

Thanks for the kind words guys. This has been my dream car since I was a teenager and it's finally starting to take shape.

I haven't considered N2O but who knows in the future. N20 is a real no no in street cars in Australia. If you get pulled over and the bottle is connected they will book you and fine you $$$.

I like the idea of making the power all motor. No bolt on extras to go wrong and a clean simple engine bay.

After reading a few more of the cam posts I've been having a look at the cam packages offered by TSP. I've been looking at the Cam package 4 for $699 which includes Cam, Patriot springs, spring seats, Ti retainers, molly push rods and new seals.

Do the Patriot springs and seats go on stock heads with no machining?

The cams that appeal are the 231/231 .598/.598 112+2
or with a little less lift and a little more duration the 232/232 .578/.578 112+2

What does the +2 on the Lobe center figure mean? Does it refer to the cam being advanced 2 degrees?

Also are the lift figures quoted at the valve with a 1.7 ratio rocker? I assume at the valve since most of the valve springs like the 918s say they are good for .600 lift.

What do you think are these any good for my application?

Sorry for all the newbie questions.

Cheers

Mike

jrp

iTrader: (16)

were reccomending this "baby" cam since it fits his application of daily driving with the occasional strip/track run. his power to weight ratio is already gonna be crazy, he doesnt need a bigger cam. besides from 2-5k these baby cams are pretty much owning these bigger cams. plus he has emissions concerns as well.

LS1 Cobra

Will a 224 still keep me emissions legal? I wasn't so concerned about emissions after the car has had it's initial test to get it registered and on the road.

Cheers

Mike

jrp

iTrader: (16)

the PP gold springs are a direct drop in dual spring w/ no maching required. there good for .650 lift and have an seat pressure of 135 @ 1.800 installed height and open pressure of 385.

all cam figures you see are factored in with the stock 1.7 ratio.

i still think the TSP 225 package would be the best bet, on a 112+4 or 114+4. yes the +* means the advance the cam has.

jrp

iTrader: (16)

dont know how strict your emissions are but the 224 114 has passed CA emissions and CA is regarded as the emission **** state, if it passes here it passes anywhere.

LS1 Cobra

It looks like the TSP 225 is 225/225 .589/.589 112.

Are you reccomending installing it 4 degrees advanced? What's the effect of advancing the cam this much? Valves opening sooner giving better cylinder filling at higher RPM? More top end power rather than low down torque?

Thanks for the good input.

Cheers

Mike

jrp

iTrader: (16)

TSP can grind you the cam on any lsa/icl you want. advance will give you more low end/midrange tq.

Cheatin' Chad

iTrader: (3)

I believe most of these cams have that advance ground into them. Installing them 4* advanced would give you 8 total in most cases.

zchgla

i suggest the trex..

Cheatin' Chad

iTrader: (3)

Why?

Because bigger is better? Because that's what everyone is saying to do? Bigger cams certainly work fantastic in some applications. In others they do not.

An automobile is a system.The only way to get the most efficient set-up is to make sure you select components based on your needs.Then make sure those compliments are engineered to compliment one another. Selecting parts from "the flavor of the month" bin is not the right thing to do in every case.

What works great for one combo might be total **** in another.

LS1 Cobra

So install it straight up @ 0 degrees. I've got a good dial indicator and stand so I can check it when I drop it in. Are these cams normally pretty accurately ground?

Cheers

Mike