HP numbers for my LQ9?
05-15-2021, 05:36 PM
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HP numbers for my LQ9?
Hello I am building an LQ9 short block and was wondering roughly what kind of flywheel horsepower I might get. It’s an LQ9 with stock 243 heads, TSP stage 3 high lift truck cam 216/220 .600, TBSS intake, 90mm TB, ls7 lifters, a good tune, and long tubes. Thankyou
05-15-2021, 05:59 PM
#2
Richard Holdner did a 6.0 test with a few different camshafts on an engine dyno with no accessories or anything so just the engine and what it can make.
The engine with a stock LQ4 camshaft made mid 400's through some long tube headers and LS3 intake (very similar to the truck intake). With a 228/230 camshaft I think it was more around 500hp. Now if we add in a water pump, power steering, A/C compressor, alternator, idlers and the belt you are going drop a small chunk of power. Then with a transmission and drivetrain even more. I'd say a healthy engine with a good tune could put down 400ish at the rear tire.
The engine with a stock LQ4 camshaft made mid 400's through some long tube headers and LS3 intake (very similar to the truck intake). With a 228/230 camshaft I think it was more around 500hp. Now if we add in a water pump, power steering, A/C compressor, alternator, idlers and the belt you are going drop a small chunk of power. Then with a transmission and drivetrain even more. I'd say a healthy engine with a good tune could put down 400ish at the rear tire.
05-16-2021, 09:58 AM
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Richard Holdner did a 6.0 test with a few different camshafts on an engine dyno with no accessories or anything so just the engine and what it can make.
The engine with a stock LQ4 camshaft made mid 400's through some long tube headers and LS3 intake (very similar to the truck intake). With a 228/230 camshaft I think it was more around 500hp. Now if we add in a water pump, power steering, A/C compressor, alternator, idlers and the belt you are going drop a small chunk of power. Then with a transmission and drivetrain even more. I'd say a healthy engine with a good tune could put down 400ish at the rear tire.
The engine with a stock LQ4 camshaft made mid 400's through some long tube headers and LS3 intake (very similar to the truck intake). With a 228/230 camshaft I think it was more around 500hp. Now if we add in a water pump, power steering, A/C compressor, alternator, idlers and the belt you are going drop a small chunk of power. Then with a transmission and drivetrain even more. I'd say a healthy engine with a good tune could put down 400ish at the rear tire.
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