help, fire! part it for ls1 or part it all and go to 911?!
11-13-2010, 04:00 AM
#46
Rennlist Member
Just saw this
Sorry Royce
I guess is good that I didn't see this until now ... that way I didin't have to tell you what my choice would be ...
Good luck with your conversion, beautiful car ...
Best regards
Ed
I guess is good that I didn't see this until now ... that way I didin't have to tell you what my choice would be ...
Good luck with your conversion, beautiful car ...
Best regards
Ed
11-13-2010, 07:21 PM
#49
Rennlist Junkie Forever
A cam and valve spring package.
That is so easy to do, relatively not expensive, and worth a solid 40Hp.
Trying to do it later in the car will be a tough job.
TonyG
That is so easy to do, relatively not expensive, and worth a solid 40Hp.
Trying to do it later in the car will be a tough job.
TonyG
11-13-2010, 09:22 PM
#50
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This is more of a driver not race car...looking for solid reliability. I understand there are things that could gain HP but looking to keep it simple
11-13-2010, 09:48 PM
#51
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Also... a cam and valve spring package won't do anything to the reliability. And if you choose the correct cam, it will still idle just like a stock cam (that's what mine idles like).
Lastly... if you're not going to do a cam and headers... there's no reason to do a dual exhaust. You won't gain a thing. You might as well do a Y setup into a regular 951 cat back single exhaust.
Here's a nice article:
http://www.superchevy.com/technical/...en3/index.html
TonyG
TonyG
11-13-2010, 09:49 PM
#52
Rennlist Junkie Forever
Ok... but you'll be doing it down the road after you get tired of the flat top end power of the stock smog cam. The stock cam kills the power at 5500 rpm.
Also... a cam and valve spring package won't do anything to the reliability. And if you choose the correct cam, it will still idle just like a stock cam (that's what mine idles like).
Lastly... if you're not going to do a cam and headers... there's no reason to do a dual exhaust. You won't gain a thing. You might as well do a Y setup into a regular 951 cat back single exhaust.
Here's a nice article:
http://www.superchevy.com/technical/...en3/index.html
TonyG
Also... a cam and valve spring package won't do anything to the reliability. And if you choose the correct cam, it will still idle just like a stock cam (that's what mine idles like).
Lastly... if you're not going to do a cam and headers... there's no reason to do a dual exhaust. You won't gain a thing. You might as well do a Y setup into a regular 951 cat back single exhaust.
Here's a nice article:
http://www.superchevy.com/technical/...en3/index.html
TonyG
11-13-2010, 10:02 PM
#53
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Ok... but you'll be doing it down the road after you get tired of the flat top end power of the stock smog cam. The stock cam kills the power at 5500 rpm.
Also... a cam and valve spring package won't do anything to the reliability. And if you choose the correct cam, it will still idle just like a stock cam (that's what mine idles like).
Lastly... if you're not going to do a cam and headers... there's no reason to do a dual exhaust. You won't gain a thing. You might as well do a Y setup into a regular 951 cat back single exhaust.
Here's a nice article:
http://www.superchevy.com/technical/...en3/index.html
TonyG
Also... a cam and valve spring package won't do anything to the reliability. And if you choose the correct cam, it will still idle just like a stock cam (that's what mine idles like).
Lastly... if you're not going to do a cam and headers... there's no reason to do a dual exhaust. You won't gain a thing. You might as well do a Y setup into a regular 951 cat back single exhaust.
Here's a nice article:
http://www.superchevy.com/technical/...en3/index.html
TonyG
You can dress it up and take it out, but when you sober up, its still a long stroke, big piston dummy that likes to wake up early.
Noone knows better than me, dude.
11-13-2010, 10:19 PM
#54
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The right cam will get him 40-50HP and probably close to that in torque as well. It's a win-win proposition.
Besides... where can you get that kind of power for $300ish... and an hour of your time.
Oh.... and the piston size of the the LS1 is 99.1mm The piston size of the 951 engine is 100mm.
TonyG
11-13-2010, 10:24 PM
#55
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The right cam will get him 40-50HP and probably close to that in torque as well. It's a win-win proposition.
Besides... where can you get that kind of power for $300ish... and an hour of your time.
Oh.... and the piston size of the the LS1 is 99.1mm The piston size of the 951 engine is 100mm.
TonyG
Besides... where can you get that kind of power for $300ish... and an hour of your time.
Oh.... and the piston size of the the LS1 is 99.1mm The piston size of the 951 engine is 100mm.
TonyG
You're going to spend big money making HP, and fight your way all the way up the river - then you can make a close ratio gearbox for $20,000 to use it, or you can use what Porsche gave you and exploit the natural strengths of the thing.
11-13-2010, 10:52 PM
#56
Rennlist Junkie Forever
I know, I know, I know - I know you know, you know I know.
You're going to spend big money making HP, and fight your way all the way up the river - then you can make a close ratio gearbox for $20,000 to use it, or you can use what Porsche gave you and exploit the natural strengths of the thing.
You're going to spend big money making HP, and fight your way all the way up the river - then you can make a close ratio gearbox for $20,000 to use it, or you can use what Porsche gave you and exploit the natural strengths of the thing.
And btw, the cool thing about the V8 swap is the 951 gear ratios. They work great for the V8.
And I agree about the money thing. Been there.... My point was that the cam is relatively cheap and super easy to do with the engine out of the. And on an otherwise stock engine gives great HP and TQ increases while not giving up anything in the TQ or idle quality department.
As far as bang for the buck goes.... you can't beat the cam upgrade.
TonyG
11-13-2010, 11:14 PM
#57
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What cam and valve spring package would you recommend? I'm at 5200 ft, running dual exhaust very similar to Doc's....need to pass emissions to top it off
11-13-2010, 11:43 PM
#58
Rennlist Junkie Forever
You will need stiffer valve springs than the stock valve springs (standard issue here). I upgraded to a TI retainer to give me that little extra bit of RPM.
If you email me, I will scan the cam card and send it to you. Just tell Comp Cams to grind that exact cam.
And... here's a little bonus... if you're not running cats, do the dual exhaust and headers, I can send you a map for your ECU or if you have a 2000 or 2001 ECU, you can send it to me and I can map your computer for you for free.
Anyway... that's the perfect stock sounding cam that really delivers great performance.
I just took it out of my LS1 that finally died and stuck it (and the valve springs) into my brand new LS6 (that's how much I like the cam).
TonyG
03-30-2011, 11:27 PM
#59
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Swap is complete...Car runs great and is more than expected! Eric with Texas Performance Concepts has made this entire swap a wonderful experience. Pictures will follow as the car is now washed and back in my garage.
