While tinkering around under my T/A the other day I saw that there's a knock sensor in the right side of the block. Does this mean the I might have a High Output 305? According to the block code the engine was originally out of an 84 truck.

 

Well, if you ran the block # and it said it isn't the stock one, then I doubt it's the HO then. If it's the stock motor then you should have a dual snorkel air intake.

 

Thats not completely true. Not all H.O. Trans Am's had the dual snorkel air cleaner. My 84 H.O. T/A didnt have it...and it was all original, it just had the functional "power bulge" hood.

 

All L69 engines are supposed to have the dual snorkel or its not a L69

 

I'm not sure about the block code, but in the vin, the eighth letter from the left will be a G.
The G engine code is for the H.O. L69 motor.
I hope that helps.

 

The engine I have was swaped out by the prevous owner in 93. It's definatly not from an F body because the block code tags it as being from an 84 truck. Also, the exhaust manifold is different (pre heater on the right vice left and air tube ports for #7 & #8 cyl on the side vice the top). The vin code is H but that matters not, in this case anyway.

 

ive got a 86 Z28 that originally had the 305 HO, but the 8th letter isnt G....its F.....if you run the vin, its listed as 5.0L V8 TPI HO

 

I have a totally 100% stock 84 TA L69 with only 30K original miles--factory perfect car--It does not have dual snorkel

 

Could you post a pic of the VIN and the engine ?

 

8 th digit in my VIN is a "G", thats the L69--I also have the original window sticker and the RPO from the console to verify the L69. I'm sure on this one. I don't have any pics of the engine bay right now.

 

Yes, I've also heard that some of the Firebirds didn't use dual snorkles but had cowl induction through the hood.

Very cool, too

Of course, my little old LG4 has a retrofitted dual snorkle, which is mucho cool looking, as well :sillylol: :sillylol: :sillylol:

 

Here's a picture.

 

i'll check my rpo's to check for sure, but the vin comes up with that HO description

 

well i just ran it with f and g, and the g does return an L69 code, while the F runs with a LB9

 

Only the 85 and later l69 T/A's had the dual snorkel, I'm pretty sure on that one!