Getting a New Engine
Thread Starter
Joined: Nov 2001
Posts: 3,066
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From: Sunny San Diego
Getting a New Engine Finally decided on a Forged 383.
But still working out the details.
I am running a P1 and will be ordering the SDCE tensioner, so I will be limited on how much boost. But I am thinking with a 3.4 I can get 10# and spin the blower to 54k @ 6.2k.
The cam I am thinking of is something like a 224/227 .563/.569 114 LSA
What would be a good CR? Something like 9.5 or closer to 9.0?
Goals:
1. 600 rwhp - No Nitrous
2. 50 - 100 shot
3. Pump Gas
4. Smog Legal
Suggestions or comments? I want to so this right the first time.
But still working out the details.
I am running a P1 and will be ordering the SDCE tensioner, so I will be limited on how much boost. But I am thinking with a 3.4 I can get 10# and spin the blower to 54k @ 6.2k.
The cam I am thinking of is something like a 224/227 .563/.569 114 LSA
What would be a good CR? Something like 9.5 or closer to 9.0?
Goals:
1. 600 rwhp - No Nitrous
2. 50 - 100 shot
3. Pump Gas
4. Smog Legal
Suggestions or comments? I want to so this right the first time.
Last edited by Ed Blown Vert; Jun 9, 2005 at 02:09 PM.
hmm, so you only have 91 oct huh? i would say if your limited by the amount of boost you will run at 10# you would prob wanna go with higher CR like the 9.5, which also depends on if you plan on upping the boost down the road. i havent heard of anything more extreme then a 224/224 114 lsa cam passing smog in cali, but this was a while ago.
good luck with it, and let us know what you decide.
good luck with it, and let us know what you decide.
I'd go with 9:1, that gives you more of an opertunity to crank up the boost later if you choose to. If you know you're going to stay with the P1SC in the future, go with 9.5:1.
I'd also go with a different cam... some thing that will hold the pressure better. I think you might bleed off some boost with that cam and using the P1SC you don't want to lose any. I'd say a '02+ Z06 cam would would better and save some $$$ as well.
Just my 2 cents...
I'd also go with a different cam... some thing that will hold the pressure better. I think you might bleed off some boost with that cam and using the P1SC you don't want to lose any. I'd say a '02+ Z06 cam would would better and save some $$$ as well.
Just my 2 cents...
Originally Posted by 2000 Tran Zam
hmm, so you only have 91 oct huh? i would say if your limited by the amount of boost you will run at 10# you would prob wanna go with higher CR like the 9.5, which also depends on if you plan on upping the boost down the road.
Thread Starter
Joined: Nov 2001
Posts: 3,066
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From: Sunny San Diego
Yep got that 91 crap. I won't be getting rid of the P1 due to the CARB number. So I am stuck with whatever boost I can get from it.
And I thought 10# was the most I could get out of it.
Just changing the LSA to 115 or 116 would be sufficient ?
And I thought 10# was the most I could get out of it.
Just changing the LSA to 115 or 116 would be sufficient ?
TECH Senior Member
Joined: Nov 2001
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Considering the limitations of the headunit I would shoot for around 9.2:1.
You'll be able to safely push about 10 pounds of boost through the 383 with that comp. (I'd be surprised if you could get much past 10#s with that headunit using a stroker)
It'll make nice power for sure
Have you thought about a D1SC, 8.0 Comp and 15#s? You'd make way more power and still be able to run pump gas.
You'll be able to safely push about 10 pounds of boost through the 383 with that comp. (I'd be surprised if you could get much past 10#s with that headunit using a stroker)
It'll make nice power for sure
Have you thought about a D1SC, 8.0 Comp and 15#s? You'd make way more power and still be able to run pump gas.
Thread Starter
Joined: Nov 2001
Posts: 3,066
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From: Sunny San Diego
Cali smog is stopping me from the D1. No CARB number. And the 8.0 probably wouldn't help with smog either.
Thanks for the help. I already given them the deposit, so all they need now is what CR I want.
Thanks for the help. I already given them the deposit, so all they need now is what CR I want.
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He's in CA, he's kind of stuck with the P1SC... not that it's a bad thing! It will certainly get him over 600 rwhp.
If you're not going to change FI systems, I'd stick with closer to 9.5:1.
Regarding the cam, I'm not an expert, you might want to ask around a little more. It's not only the LSA, but also the duration. A good blower cam won't overlap much (leak much boost). Like I said, you can find '02 Z06 cams very cheap, and they are great a cam for FI. There's a little more power to be had with a bigger blower cam, but with that SC, a Z06 cam will take you farther than the head unit will. Plus the lift won't wear valve springs and it will pass the sniff test with flying colors!
If you're not going to change FI systems, I'd stick with closer to 9.5:1.
Regarding the cam, I'm not an expert, you might want to ask around a little more. It's not only the LSA, but also the duration. A good blower cam won't overlap much (leak much boost). Like I said, you can find '02 Z06 cams very cheap, and they are great a cam for FI. There's a little more power to be had with a bigger blower cam, but with that SC, a Z06 cam will take you farther than the head unit will. Plus the lift won't wear valve springs and it will pass the sniff test with flying colors!
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Thread Starter
Joined: Nov 2001
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From: Sunny San Diego
Originally Posted by CHRISPY
I would think you could run a 224/230 115LSA cam in the stroker and pass cali emissions no problem.
Originally Posted by Ed Blown Vert
Hmmm and put it on the D1
Kyle
Thread Starter
Joined: Nov 2001
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From: Sunny San Diego
Originally Posted by NA$TY-TA
Who going to be doing the tuning??? Id ask them what they think they can do....... esp. about the cam...... You should be able to reach your goal with a 383..... the octane is going to hurt you a lil bit so id go with a lower compression for sure.... id shoot for 9:1.....
Kyle
Kyle
Originally Posted by NA$TY-TA
Who going to be doing the tuning??? Id ask them what they think they can do....... esp. about the cam...... You should be able to reach your goal with a 383..... the octane is going to hurt you a lil bit so id go with a lower compression for sure.... id shoot for 9:1.....
Kyle
Kyle
hmm, your right, i forgot that hes getting a 383. i retract my previous statement about the cam passing emissions as it was inteded for a 346.
what are your power goals gonna be?
Originally Posted by 2000 Tran Zam
hmm, your right, i forgot that hes getting a 383. i retract my previous statement about the cam passing emissions as it was inteded for a 346.
what are your power goals gonna be?
what are your power goals gonna be?
Goals:
1. 600 rwhp
2. 50 - 100 shot
3. Pump Gas
4. Smog Legal
he knows my opinion,to go with 9:1.you'll be on the safe side,its not too low,theres potential for growth, and you wont notice the difference when out of boost.and you could get away with that 100shot you want
Originally Posted by ddnspider
from post #1
Goals:
1. 600 rwhp
2. 50 - 100 shot
3. Pump Gas
4. Smog Legal
he knows my opinion,to go with 9:1.you'll be on the safe side,its not too low,theres potential for growth, and you wont notice the difference when out of boost.and you could get away with that 100shot you want
Goals:
1. 600 rwhp
2. 50 - 100 shot
3. Pump Gas
4. Smog Legal
he knows my opinion,to go with 9:1.you'll be on the safe side,its not too low,theres potential for growth, and you wont notice the difference when out of boost.and you could get away with that 100shot you want
DOH!
my reading skills still need progress.
however, if you do not plan on upgrading from p1 i would prob think youd want something in the middle, maybe 9:2 or 9:3.
only reason is because you want enough compression to not have to worry about not running enough psi, however low enough compression to not detonate on pump gas.
Thread Starter
Joined: Nov 2001
Posts: 3,066
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From: Sunny San Diego
Originally Posted by CHRISPY
Considering the limitations of the headunit I would shoot for around 9.2:1.
Since this is my weekend track car. I guess I could run a mix of race gas and go 9.5 :dunno: