Air cleaner Decal needed

[avnut]

Old Chevrolet engineering dyno test show 575@6800rpm for the ZL-1. Mine was right on that figure.

Thanks for the dyno chart.You posted as I was typing.lol
I had thought the L88/ZL1 to be in that ballpark.

[L78 steve]

[/quote]

What is the deal with the Vacuum can in the L88 pic. ?  There is no port.

[william]

Check out a more modern ZL1 dyno test on the engine from #26:

http://www.camaros.org/copo.shtml

With today's 0 weight racing oils and the latest piston ring technology Camaro Hi-Performance is seeing 550hp+ on their ZL1 rebuilds.

[Oaklyss]

What is the deal with the Vacuum can in the L88 pic. ?  There is no port.
[/quote]

L-88 AND ZL-1 did not use vacuum advance, only mechanical, as they were intended to be strickly race cars. So the stock vacuum can is factory sealed. These motors run much better with an adjustable vacuum can and manifold vacuum advance, as these motors love LOTS of advance due to the high piston dome.

[Oaklyss]

[/quote]
Thanks for the dyno chart.You posted as I was typing.lol
I had thought the L88/ZL1 to be in that ballpark.
[/quote]

Man, the idle of a l-88 or a ZL-1 is like NOTHING out there! your going to love it!

[JohnZ]

What is the deal with the Vacuum can in the L88 pic. ?  There is no port.
[/quote]

That vacuum can operates the wiper door that covers the windshield wipers and linkage on '68-'72 Corvettes.

[avnut]

What is the deal with the Vacuum can in the L88 pic. ?  There is no port.

L-88 AND ZL-1 did not use vacuum advance, only mechanical, as they were intended to be strickly race cars. So the stock vacuum can is factory sealed. These motors run much better with an adjustable vacuum can and manifold vacuum advance, as these motors love LOTS of advance due to the high piston dome.
[/quote]
So would you recommend a Vac Distributor for "Hot" street use? I was going to go with a Small cap MSD with mech advance.Even thought the L88 doesnt have much vacuum, I think I can get things to work ok by tying the systems into the RS Vac tank.

[janobyte]

12.5:1 compression ?

If you plan to run a MSD checkout p/n MSD Programmable Digital 6AL-2 Ignition Boxes 6530. More to chose from, but appears a nice street/strip unit. Very popular with the bracket racers around here--can take some timing out at shift points ,launch etc.  based on track conditions. Very user friendly with laptop. One of my buddies chases points ,and installed the next unit up last season. Loves it. He has a 900+ HP BB which puts his Camaro in the high 8's ( and on the rear bumper once) His daughter runs the car around a mid 9 dial. If I was going a different path with my Z , A MSD set up would be my ignition system of choice for it.  Proven in our Gasser. Probably more a TC response, but thought I'd add.

[avnut]

12.5:1 compression ?

If you plan to run a MSD checkout p/n MSD Programmable Digital 6AL-2 Ignition Boxes 6530. More to chose from, but appears a nice street/strip unit. Very popular with the bracket racers around here--can take some timing out at shift points ,launch etc.  based on track conditions. Very user friendly with laptop. One of my buddies chases points ,and installed the next unit up last season. Loves it. He has a 900+ HP BB which puts his Camaro in the high 8's ( and on the rear bumper once) His daughter runs the car around a mid 9 dial. If I was going a different path with my Z , A MSD set up would be my ignition system of choice for it.  Proven in our Gasser. Probably more a TC response, but thought I'd add.

Yes It still has the 12.5 pistons.I will check out the 6AL-2.Thanks.Not that I will do anymore street racing (unlike my younger days)Just going to drive around with it and enjoy it and also try not to break it.lol

[janobyte]

Racing aside, I see the benefits of integrating some modern technology into these older race bred engines. Drags are easy, make a pass ,back to the trailer to cool off. Street is far more demanding. Plus the benefits of soft hit rev limiters.....when Shut Down comes through the speakers, and your right foot gets a little heavy

[L78 steve]

To clearify my ? (Vaccum advance diaphram) not can . So why is it there if it has no funtion?

What is the deal with the Vacuum can in the L88 pic. ?  There is no port.

L-88 AND ZL-1 did not use vacuum advance, only mechanical, as they were intended to be strickly race cars. So the stock vacuum can is factory sealed. These motors run much better with an adjustable vacuum can and manifold vacuum advance, as these motors love LOTS of advance due to the high piston dome.
[/quote]

[Oaklyss]

To clearify my ? (Vaccum advance diaphram) not can . So why is it there if it has no funtion?

The vacuum can still has the advance rod, although it does not move, the rod still needs to hold the advance plate in position and limit it.

[L78 steve]

To clarify my ? (Vacuum advance diaphragm) not can . So why is it there if it has no function?

The vacuum can still has the advance rod, although it does not move, the rod still needs to hold the advance plate in position and limit it.

Thanks for the explanation. I figured they would just lock the breaker plate with a screw.