LSX454 Crate motor
LSX454 Crate motor I am debating on what motor to throw in my new build. I am thinking of this set up. Thoughts?
http://www.crateenginedepot.com/stor...1-P2303C2.aspx
http://www.crateenginedepot.com/stor...1-P2303C2.aspx
i would do a hke 408 with tfs 235-245's my self but if you want the ls7 heads i understand, you could use a 4" crank on that and it would be a 443 i think a guy somewhat local to be had a 454 and turned it into a 443 im not sure exactly why maybe something about it burning less oil, his name is 03supercobra if you want to pm him and ask a few questions, goodluck with finding a new motor
Do you guys know what size injectors come with this set up? I am assuming 47#?
http://www.crateenginedepot.com/stor...5-P2514C0.aspx
http://www.crateenginedepot.com/stor...5-P2514C0.aspx
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TECH Fanatic
Joined: Aug 2005
Posts: 1,691
Likes: 1
From: Sunny London, UK
Staging Lane
Joined: Apr 2010
Posts: 55
Likes: 0
From: Houston
I just bought this motor along with the carb style intake + added an Elbow and 50lb/hr injectors. It is a sweet motor with heads that flow 370+CFM as cast - not the LS7 Heads, but new LSX Heads.
1. Is a 90MM TB OK, or should I get one of the new bigger ones: 92MM, 102MM etc?
2. I have a Bigstuff3 in my car that was used with my FI BBC 454. It is 3 years old. Should I continue to use it. I'll probably need to send it in for updating + order a new harness for the COP ignition the LSX uses.
3. Will I be able to use my Accell 300+ (just like a MSD 6AL) or do I just run off the Bigstuff3 alone?
Thanks
1. Is a 90MM TB OK, or should I get one of the new bigger ones: 92MM, 102MM etc?
2. I have a Bigstuff3 in my car that was used with my FI BBC 454. It is 3 years old. Should I continue to use it. I'll probably need to send it in for updating + order a new harness for the COP ignition the LSX uses.
3. Will I be able to use my Accell 300+ (just like a MSD 6AL) or do I just run off the Bigstuff3 alone?
Thanks
Last edited by 454spyder; May 4, 2010 at 09:26 PM.
TECH Senior Member
Joined: Jul 2009
Posts: 8,034
Likes: 663
I just bought this motor along with the carb style intake + added an Elbow and 50lb/hr injectors. It is a sweet motor with heads that flow 370+CFM as cast - no the LS7 Heads, but new LSX Heads.
1. Is a 90MM TB OK, or should I get one of the new bigger ones: 92MM, 102MM etc?
2. I have a Bigstuff3 in my car that was used with my FI BBC 454. It is 3 years old. Should I continue to use it. I'll probably need to send it in for updating + order a new harness for the COP ignition the LSX uses.
3. Will I be able to use my Accell 300+ (just like a MSD 6AL) or do I just run off the Bigstuff3 alone?
Thanks
1. Is a 90MM TB OK, or should I get one of the new bigger ones: 92MM, 102MM etc?
2. I have a Bigstuff3 in my car that was used with my FI BBC 454. It is 3 years old. Should I continue to use it. I'll probably need to send it in for updating + order a new harness for the COP ignition the LSX uses.
3. Will I be able to use my Accell 300+ (just like a MSD 6AL) or do I just run off the Bigstuff3 alone?
Thanks
Staging Lane
Joined: Apr 2010
Posts: 55
Likes: 0
From: Houston
Hey Jimbo-here is the link describing the flow of the new six bolt LSX head (based on the LS7 head, but not the same).
http://www.popularhotrodding.com/tec...fications.html
97 LS3: I bought it from JEGS for $9299. I purchased the carb style intake, oil pan, 8-bolt flexplate, and water pump from Crate engine depot (pretty good prices but I forgot about GMparts direct - could have saved about $60 or more).
I bought the intake elbow and injectors from Jegs also along with some bolt-in/weld-in motor mounts for my install.
Anyone have comments on the TB size? Is a 90 MM still OK, or should I go with something bigger? I may have to return my elbow (edelbrock) and get one that works with the bigger ones.
http://www.popularhotrodding.com/tec...fications.html
97 LS3: I bought it from JEGS for $9299. I purchased the carb style intake, oil pan, 8-bolt flexplate, and water pump from Crate engine depot (pretty good prices but I forgot about GMparts direct - could have saved about $60 or more).
I bought the intake elbow and injectors from Jegs also along with some bolt-in/weld-in motor mounts for my install.
Anyone have comments on the TB size? Is a 90 MM still OK, or should I go with something bigger? I may have to return my elbow (edelbrock) and get one that works with the bigger ones.
Staging Lane
Joined: Apr 2010
Posts: 55
Likes: 0
From: Houston
Jimbo,
there is a few more articles out there on those new heads. The CNC version flows over 400 CFM. Pretty crazy stuff -thats darn good for a big block head. LS engine architecture is pretty amazing.
Do some searches for 454LSX GMPP and you'll find more
there is a few more articles out there on those new heads. The CNC version flows over 400 CFM. Pretty crazy stuff -thats darn good for a big block head. LS engine architecture is pretty amazing.
Do some searches for 454LSX GMPP and you'll find more