Which Bottom End for Boost?
Which Bottom End for Boost? I am considering going to a Forged motor on my car. My car is a daily driver, and I don't want to have to worry baout the down time if I do happen to blow my stock motor, so basically I am planning ahead!
This is going on a D1SC Procharged GTO. Currently have a cam and an External fuel setup on the car as well. So I am trying to decide which motor I would like.
My options:
Compression between 9.0:1 and 9.5:1 preferably 9.5:1 if I can mangae with it!
346
408
And if anyone else has suggestions I would appreciate it!
If I did the 408 I would probably go with a little larger cam, I am running a 224/228 .581/.588 114lsa right now.
Basically what I would like to know is whether or not it is worth it for me to spend the more on the 408. I don't plan on changing the pulley right away as I would gradually like to make more power on the setup.
Wow, reading over this I am rambling...So which motor would you guys use with a D1SC kit? I also intend to keep the stock heads with the valvetrain upgraded for atleast 6 months aftre I change out the motor! Chances are that the motor will also see nitrous, just not right away!
Thanks for any info you can provide, and if you suggets the 408, please give recommendtions on a cam!
This is going on a D1SC Procharged GTO. Currently have a cam and an External fuel setup on the car as well. So I am trying to decide which motor I would like.
My options:
Compression between 9.0:1 and 9.5:1 preferably 9.5:1 if I can mangae with it!
346
408
And if anyone else has suggestions I would appreciate it!
If I did the 408 I would probably go with a little larger cam, I am running a 224/228 .581/.588 114lsa right now.
Basically what I would like to know is whether or not it is worth it for me to spend the more on the 408. I don't plan on changing the pulley right away as I would gradually like to make more power on the setup.
Wow, reading over this I am rambling...So which motor would you guys use with a D1SC kit? I also intend to keep the stock heads with the valvetrain upgraded for atleast 6 months aftre I change out the motor! Chances are that the motor will also see nitrous, just not right away!
Thanks for any info you can provide, and if you suggets the 408, please give recommendtions on a cam!
Last edited by TrakDay; Sep 23, 2005 at 04:21 PM.
HAHA...I called around to numerous places. Between the sponsor sale section here and ls1gto I found these prices! Just gotta take the time to look in all the right places! And from what I have heard LME builds very nice motors...
Originally Posted by TrakDay
I am considering going to a Forged motor on my car. My car is a daily driver, and I don't want to have to worry baout the down time if I do happen to blow my stock motor, so basically I am planning ahead!
This is going on a D1SC Procharged GTO. Currently have a cam and an External fuel setup on the car as well. So I am trying to decide which motor I would like.
My options:
Compression between 9.0:1 and 9.5:1 preferably 9.5:1 if I can mangae with it!
346
408
And if anyone else has suggestions I would appreciate it!
If I did the 408 I would probably go with a little larger cam, I am running a 224/228 .581/.588 114lsa right now.
Basically what I would like to know is whether or not it is worth it for me to spend the more on the 408. I don't plan on changing the pulley right away as I would gradually like to make more power on the setup.
Wow, reading over this I am rambling...So which motor would you guys use with a D1SC kit? I also intend to keep the stock heads with the valvetrain upgraded for atleast 6 months aftre I change out the motor! Chances are that the motor will also see nitrous, just not right away!
Thanks for any info you can provide, and if you suggets the 408, please give recommendtions on a cam!
This is going on a D1SC Procharged GTO. Currently have a cam and an External fuel setup on the car as well. So I am trying to decide which motor I would like.
My options:
Compression between 9.0:1 and 9.5:1 preferably 9.5:1 if I can mangae with it!
346
408
And if anyone else has suggestions I would appreciate it!
If I did the 408 I would probably go with a little larger cam, I am running a 224/228 .581/.588 114lsa right now.
Basically what I would like to know is whether or not it is worth it for me to spend the more on the 408. I don't plan on changing the pulley right away as I would gradually like to make more power on the setup.
Wow, reading over this I am rambling...So which motor would you guys use with a D1SC kit? I also intend to keep the stock heads with the valvetrain upgraded for atleast 6 months aftre I change out the motor! Chances are that the motor will also see nitrous, just not right away!
Thanks for any info you can provide, and if you suggets the 408, please give recommendtions on a cam!
Heres a better thought, Keep what you have, add the D-1SC and keep the boost under 8 psi. and your done. That should stick you in the 500-550RWHP range if not more. Long Tubes and heads would not hurt.
Just a suggestion
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Originally Posted by Bryan Wilkinson
Heres a better thought, Keep what you have, add the D-1SC and keep the boost under 8 psi. and your done. That should stick you in the 500-550RWHP range if not more. Long Tubes and heads would not hurt.
Just a suggestion
Just a suggestion
04 GTO: Procharged D1SC, XR-22 blower cam, External fuel system, upgraded valvetrain, LTs catless, and Corsa Exh.
Those are my current mods making 551/457 at the wheels right now. So basically I want more!
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How much power are you wanting to make? It would be cheaper to keep with the 346 ci, and just add rods and pistons, and you could up the boost to 12 to 14 psi. This would get up close to 700 rwhp. If you add more cubes and go for a lot of boost, you can get to the point to where the D-1SC isn't going to be able to keep up. Bob
Originally Posted by Got Me SOM
your car is already heavy enough as it is, go with a forged 348. Plenty of people have proven that it can make up to 1000 hp.
trying to one up waveydaveygto?
trying to one up waveydaveygto?
And no, I am not really concerned with WavyDavy...I have much bigger plans on my plate. And I readily admit that I need more seat time, short times of 2.05 and RT of crap don't help, oh yeah and blowing a belt out shifting into 3rd gear...although I would not have caught him anyways, but it would hav ebeen closer. When I get my RT and 60fts down, well we know what will happen!
The more I think about it the more beneficial I think it might be to go with a 347. If I do the 347 I will probably go ahead and do heads right away as well! Probably something along the lines of teh ETheads but not sure how large I should go, so any input on that would be nice!?
Also, what components are most people running for their internals?
Also, what components are most people running for their internals?
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Originally Posted by TrakDay
Compression between 9.0:1 and 9.5:1 preferably 9.5:1 if I can mangae with it!
Originally Posted by eviltwins
Just curious as to why you think you need 9.5:1 compression, still buying into the compression = better throttle response deal? Remember, with a lower static compression you can run a smaller pulley and more boost on pump gas. A smaller pulley means the blower is turning faster at all RPM's, and will make a lot more low end torque than a half a point in compression will. I wouldn't go any higher than 9:1 for a street motor, and even that is on the higher side of what I like.
We run our ATI ProCharger equipped engines between 9.0 to 9.5/1 compression with 14 to 15 psi, with no spark knock on 93 octane gas. This is with wide open throttle timing pulled back to 18 degrees, and air/fuel at 11.5 to 11.7/1.
Callies Compstar rods and Diamond pistons along with Total Seal rings will get you a very dependable bottom end. We also use ARP head studs on our blower engines for added insurance. The bottom end girdle by http://www.dmperformance.org/ is a good idea and we have been using it on our engines. Bob
Callies Compstar rods and Diamond pistons along with Total Seal rings will get you a very dependable bottom end. We also use ARP head studs on our blower engines for added insurance. The bottom end girdle by http://www.dmperformance.org/ is a good idea and we have been using it on our engines. Bob