LSX454 Crate motor
#1
FormerVendor
Thread Starter
iTrader: (3)
Join Date: Apr 2010
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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
#3
MASS seller approved
iTrader: (160)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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
#6
FormerVendor
Thread Starter
iTrader: (3)
Join Date: Apr 2010
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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
#7
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I THOUGHT the LS7 had the same injectors as the LS3
Trending Topics
#10
TECH Fanatic
#12
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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; 05-04-2010 at 09:26 PM.
#13
#14
FormerVendor
Thread Starter
iTrader: (3)
Join Date: Apr 2010
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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
#15
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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.
#19
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
454spyder ,
Thanks. I wish they (article) had more data on the head flow.
thanks again,
Jim
Thanks. I wish they (article) had more data on the head flow.
thanks again,
Jim
#20
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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