The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Whats your impression of a 5.3L LS motor in these trucks?

binford · 12-27-2016, 02:01 PM

Read the thread. Having owned a burb with a 5.3, with 16 mph hwy miles
Noticed the off the line torque is good, but not a rocket. I just picked up an LQ4 6.0 13 mph hwy. The torque curve is nearly flat which is good as my c20 weighs in at 5,700 lbs.

Why the lsx motor over a 1971 350, simple more power for less money.
I'll have almost twice the HP with out doing any engine mods and get about 3 miles per gallon better mileage.

My goal is $2500, spent $1700 for the motor, trans, wiring , pedal, computer, etc. Plan on using the stock gas tank and inline pump, so $800 looks do able.

Bought adapter motor mount plates on eBay for $21.
I have access to many different tools and machines, so that is where my cost saving really comes from

12-27-2016, 02:01 PM	#136
binford Registered User Join Date: Aug 2004 Location: Sacramento Ca Posts: 126	Re: Whats your impression of a 5.3L LS motor in these trucks? Read the thread. Having owned a burb with a 5.3, with 16 mph hwy miles Noticed the off the line torque is good, but not a rocket. I just picked up an LQ4 6.0 13 mph hwy. The torque curve is nearly flat which is good as my c20 weighs in at 5,700 lbs. Why the lsx motor over a 1971 350, simple more power for less money. I'll have almost twice the HP with out doing any engine mods and get about 3 miles per gallon better mileage. My goal is $2500, spent $1700 for the motor, trans, wiring , pedal, computer, etc. Plan on using the stock gas tank and inline pump, so $800 looks do able. Bought adapter motor mount plates on eBay for $21. I have access to many different tools and machines, so that is where my cost saving really comes from Last edited by binford; 12-27-2016 at 02:08 PM.