Just bought an '84Z parts car with an LG4.Just exactly what are the differences between the LG4 and the L69?

 

H.O cars had: Dual Snorkel Air Cleaners, larger cfm carb, higher compression, different cam, electric fan, 3.73 rear, of course different badges, and some other stuff I can't think of now.

T

 

I didn't realize they got larger cfm carb, I thought they all got the same q-jet carb.

 

I believe they were just jetted differently....

Rick, I'm working on a reply for you...

Pete

 

They were just jetted different...

 

H.O's had 650 CFM Quadrajets.

Tom

 

Don't forget different cat, manifolds and exhaust. Pretty sure that's about the extent of the differences besides optional equipment.

 

I think the metering rods are different also on the L69 carbs.

 

Dish pistons in the LG4 v. flat tops in the L69.

 

Didnt the compression on the lg4 go to 9:5:1 in 85-86? I was looking at a chilton today it had the compression listed as being
8:5:1? I know you cant believe everything you read because it had the horsepowre rated at 155. I know that cant be right because my lg4 has some where around 400 to a million horsepower!

 

Yup.

The differences with the L69 cars are: 3.73's, larger 2.5" monolith brick type cat, larger exhaust, corvette profile camshaft, richer metering rods (same Q-jet),dual snorkel air cleaner, and before the LG4's got them they had electric fans and higher comp ratio. That's about it.