Help me pick out parts for a boosted block
Thread Starter
Joined: Oct 2002
Posts: 523
Likes: 58
From: Winnipeg, Manitoba, Canada
Help me pick out parts for a boosted block Found a local low mileage LQ4 motor...complete with an ECU.
Looking to swap in a blower cam and some ported LS3 heads. If I was shooting for approx 700-800 rwhp (through a 4L80E) with a twin turbo setup from Huron possibly, what kind of compression should I shoot for? 9.0? 9.4? Less?
It will be driven mainly on the street...cam recommendations? Something with a nice lope that is boost friendly?
Recommendations on rotating assembly? The engine needs to be disassembled and inspected (sat for 4 years) so I figured might as well put some better quality parts in there.
Local shop figures $3500 labour, $2000 in parts for a long block.
My other option is an LSX B15 376ci block for about $7500 with a forged crank, forged pistons, and LS3 heads.
What would you do?
Looking to swap in a blower cam and some ported LS3 heads. If I was shooting for approx 700-800 rwhp (through a 4L80E) with a twin turbo setup from Huron possibly, what kind of compression should I shoot for? 9.0? 9.4? Less?
It will be driven mainly on the street...cam recommendations? Something with a nice lope that is boost friendly?
Recommendations on rotating assembly? The engine needs to be disassembled and inspected (sat for 4 years) so I figured might as well put some better quality parts in there.
Local shop figures $3500 labour, $2000 in parts for a long block.
My other option is an LSX B15 376ci block for about $7500 with a forged crank, forged pistons, and LS3 heads.
What would you do?
I'd build a 370 at 9:1 with Wiseco pistons and Callies rods. I'd set the bearing clearances really loose and use a high volume oil pump, like a Melling 10296 or 10355 even. I don't think you would need a really big cam, maybe something like 230/244 @ .050".
Thread Starter
Joined: Oct 2002
Posts: 523
Likes: 58
From: Winnipeg, Manitoba, Canada
Went with Horsepower Solutions in Edmonton Alberta. 370 ci LQ9
Wiseco -11 cc pistons
Compstar H rods
ARP main studs
ARP head studs
Stock crank
LSA heads
RPM modded LSA rockers
Bret Bauer camshaft
VS Racing turbos
And a partridge in a pear tree. Not sure where to post the build thread.
Wiseco -11 cc pistons
Compstar H rods
ARP main studs
ARP head studs
Stock crank
LSA heads
RPM modded LSA rockers
Bret Bauer camshaft
VS Racing turbos
And a partridge in a pear tree. Not sure where to post the build thread.
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
A cam that big is going to need at least a 118 LSA to work decent on a turbo setup.
Put that stuff down, Sir, its rotting your brain. I made 700whp on a bone-stock 6.0 long block about 6 years ago. Stock cam, heads, and all.
You're not going to need LS3 heads, huge cam, or super low compression to hit that goal.
230/244 @ .050 for a twin turbo 6.0 @ 700whp?
A cam that big is going to need at least a 118 LSA to work decent on a turbo setup.
Put that stuff down, Sir, its rotting your brain. I made 700whp on a bone-stock 6.0 long block about 6 years ago. Stock cam, heads, and all.
You're not going to need LS3 heads, huge cam, or super low compression to hit that goal.
A cam that big is going to need at least a 118 LSA to work decent on a turbo setup.
Put that stuff down, Sir, its rotting your brain. I made 700whp on a bone-stock 6.0 long block about 6 years ago. Stock cam, heads, and all.
You're not going to need LS3 heads, huge cam, or super low compression to hit that goal.
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Verdad Gallardo Thread Starter
Joined: Oct 2002
Posts: 523
Likes: 58
From: Winnipeg, Manitoba, Canada
I'm being conservative when I say 700-800 rwhp. The #1 goal is reliability. #2 goal is streetabiliy. #3 is max horsepower. I like bumpy cams. My NA setup was a 236/242 109.5 LSA cam.