Another Original ZL/1
 

Another Original ZL/1 engine going together

I'm guessing that the ALUMINUM blocks were machined and not broached...

Dyno sheet

628 HP and 606 TQ ain’t bad at all!!:smile:

Jerry knows the ins and outs of a BBC cast iron or aluminum :-)

Hope all so well Jerry.

Dan

Thanks Dan

Man, that's nice! What is the compression ratio?

Stock 12 to 1 on VP 110 gas

Headers?

What Cam?

Nice numbers

Congrats, those are huge numbers especially if stock heads and bore!

Cam is a Comp Cams 663int .622ex 108 C/L duration 262int 272ex @.050
Yes hooker comp. dyno headers. stock bore. Heads are stock but comp V/J
Stock 850cfm ran out carb @ about 6500rpm there is more there but this is one of 69
original engines. We broke it in and a few easy pulls only.

Dyno video https://youtu.be/sgvyoXTKtec

Very nice

Very nice!

That's bad ass!

How much total timing did you run?

How much did your lash grow from cold to hot?

Only 36 degrees timing, lash cold .16 hot .024
@33 degrees made about 27 less HP
This engine will only idle in & out of the trailer

Kind of shame that...but understandable.

Yes, that's what I was thinking too, but again, a car that is as valuable as this one would be hard to abuse. I'd like to put that in my Camaro for a little while and see what it would do.

I don't think this engine is in any car from what I gathered so far. But, I am curious if it is from one of the original '69 ZL1 cars - I believe that was inferred in previous thread or maybe I misunderstood....


..."there is more there but this is one of 69 original engines. "

I already stated it is an original engine out of one of 69 cars. The owner chooses not to make it public, I will say this it is a Gibb car that was reassigned.

Got it Jerry - thanks for the info!

Never seen that kind of TQ from a 3.766 stroke ZL1 before.....but then again I've never seen a crank flange like that on a 7415 crank.