carb heat shields

[ccargo]

I've noticed these ugly carb heat shields being advertised for both Rochester and Holley applications. Were these ugly things ever used on first generation camaros?

[bertfam]

Not from the factory, but they could be purchased over the counter. I bought one in the early 70's for a 57 Chevy I was building. It was cool looking then. Not really sure how much it helped.

I've also been told they were standard on the ZL1's, but that's only hearsay.

Anyone else??? JohnZ???

Ed

[JohnZ]

As far as I know, they were never factory-installed, but many were dealer-installed under TSB's for warranty complaints of fuel percolation and vapor lock.

[nuch_ss396]

John,

That matches what I've heard over the years.  One other was they were a California car thing. 

Just for kicks & giggles, there was a topic on the NCRS.org site about a 1970 tri-power 427 Corvette engine ( designated he LJ-2 )
that never was due to production problems.  One member reported he has an original tri-power heat shiled destined for this car.
If the shield wasn't going to be producction based, why would it exist as a service item even before the car was built?

Steve

[JohnZ]

The LJ-2 was going to use the same tri-power intake carbs and spacing as the 427 tri-power on the L-71; it's not clear that the shield was only for the LJ-2.

[gro51]

I replaced a rochester q-jet on my 68 ss 350 (L48) a few years ago.  I forgot to put the heat shield on.  Fuel percolation problem BIG TIME.  Removed the carb, installed the heat shied and the problem was completely fixed.  As far as being ugly goes, you can barely see it under the carb if you're using the correct one.

[nuch_ss396]

I replaced a rochester q-jet on my 68 ss 350 (L48) a few years ago. I forgot to put the heat shield on. Fuel percolation problem BIG TIME. Removed the carb, installed the heat shied and the problem was completely fixed. As far as being ugly goes, you can barely see it under the carb if you're using the correct one.

We're not talking about the same thing here.  The heat shield being discussed here was aluminum and quite large.  It was much wider and longer
than the carb base.  It covered a large portion of the intake runners.

Steve

[nuch_ss396]

The LJ-2 was going to use the same tri-power intake carbs and spacing as the 427 tri-power on the L-71; it's not clear that the shield was only for the LJ-2.

John,

Are you saying that the heat shield could have been an L-71 service item as well?  They already existed in 1969 as service items, didn't they?
My Vette knowledge is limited.
Steve

[JohnZ]

I've never seen one on a car - have only seen a photo of one alleged to be a service TSB part.