Looking for a 71-72 LT-1 intake manifold

[Gary W.]

My 3959594 LT-1 intake manifold coolant passage has corroded through under the W snowflake. Looks terminal. Would like to find a reasonalbly priced replacement. Thanks.

[Dick W.]

Re: Looking for a 71-72 LT-1 intake manifold

The NCRS Driveline is the proper venue to search for parts. This forum is for technical questions and comments

[Joe L.]

Re: Looking for a 71-72 LT-1 intake manifold

Gary-----

It depends what you mean by "reasonably priced" and what you mean by "replacement".

If by "replacement" you mean another manifold that you can replace it with and maintain reasonably correct appearance without spending a bundle for an NOS or used "correct" manifold, then I would suggest an Edelbrock 2101 or 7104. You can purchase these manifolds cheap (ESPECIALLY the 2101), they will look very similar to original, and you can use a divorced choke (although, possibly, not the same stove as original).

If you want exact correctness, then you'll have to look for a 3959594 and the Driveline would be a great place to find one.

[Robert S.]

Re: Looking for a 71-72 LT-1 intake manifold

Gary, I'll second Joes recommendation of an Edelbrock amnifold if you want to go with a replacement. You can get the Performer for a little over 100 bucks. Bob

[Gary W.]

Re: Looking for a 71-72 LT-1 intake manifold

Do they have an easy choke conversion?

[Robert S.]

Re: Looking for a 71-72 LT-1 intake manifold

Gary, Sorry I forget what the choke set-up looks like on an LT-1, so I'm not sure what you would need. But I can tell you the Performer I put on my 78 L-48 just needed a small adapter plate that tey offer for the divorced choke. Bob

[Duke W.]

Re: Looking for a 71-72 LT-1 intake manifold

A couple of other options: The original manifold can probably be repaired and if you plan on having the car judged, a repaired original will lose fewer points than a non-OE replacement.

Another replacement option is the GMPP manifold. You can download the GMPP catalog as a pdf. Just google to get to their site.

Duke

[Joe L.]

Re: Looking for a 71-72 LT-1 intake manifold

Duke-----

The only available GMPP ALUMINUM manifold that will work has provisions for EGR. So, this has to be blocked off. All-in-all, I think that it's better to use an Edelbrock 2101 which has no EGR provisions than a GMPP which does.

Another option, though, would be the GM #14096011. This manifold is similar to the Z-28 manifold in CONFIGURATION. However, it's made of cast iron. I suppose one could paint it with aluminum paint, though. In fact, it might not be a bad option. It GM lists for about 240 bucks.

[Joe L.]

Re: Looking for a 71-72 LT-1 intake manifold

Gary-----

Choke conversion is easy. As Bob says, you can purchase the stove assembly that you need from Edelbrock. The only think that you have to do is fabricate the choke rod to connect the stove to the carburetor. It's very easy to do this. Use a piece of aluminum rod. It will bend easily and be way more than strong enough. I've done these before with no problems, at all.

[Gary W.]

Re: Looking for a 71-72 LT-1 intake manifold

Thanks guys. Great info. I may send mine off and get it repaired, but the snowflake would probably be toast. Still mulling over the possibilities. The GMPP manifold looks nice.

[John H.]

Re: Looking for a 71-72 LT-1 intake manifold

Before you call it "terminal", get a couple of photos of it to Jerry MacNeish (www.z28camaro.com) - he's an aluminum casting repair "wizard"; see the examples on his site.