Gen 1 intake manifold to Gen II block

[Surfdude]

I know there are lots with more experience than me and a few of you who also have to contend with the lovely CARB regulations here in California so..

1978 Chevy C10
Engine 350 SBC

Intake manifold with all of the state-mandated smog fittings casting number: 346249
The new block has a casting number of 10243880, 92-96 model years.

Will the two mate unmodified? I ask because as I am trying to put the manifold on but the 4 center bolts look as if they are drilled at a more perpendicular (straight up) angle than the rest. I am asking before I get the grinder out and modify the holes then epoxy back to size.

I would like to put an aftermarket intake manifold on, but there are no intake manifolds with the magic EO (executive order) paperwork available. Has anyone put on a Performer manifold with the EGR option and successfully passed smog in CA?

I want to keep it carb'ed (I luvs me the sound of 2ndaries opening up) so am leaning against TBI, that and the hassle of the state come smog time.

I appreciate all of the help, I would post pictures if I was doing anything interesting but all of us have seen greasy engines that have sat for 30+ years.

Thanks for the help,

 

[4WDKC]

what heads are you using?

 

[MikeB]

The 880 block is considered to be Gen I. Sounds like you have 86-up heads where GM decided to drill the four center bolt holes vertically. It's possible a standard manifold can be modified to fit, but your best bet is an aftermarket manifold like the one below made specifically for those heads.

https://www.summitracing.com/tx/parts/edl-2104

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[Surfdude]

Thanks for the post. Summit cannot ship that to me here in California.

Good to know the 880 block is still Gen 1. That at least explains how I ended up with it. When I looked at a couple of sites that had years/casting numbers , the 880 was listed as "LT1 sometimes referred to as Gen II". I like your explanation better 'cuz I get to be less stupid.

 

[Craig 85]

I just put a Performer on my '79 K15 with a stock 350 in December to smog and sell it. PM me your email address and I send you the info. I got Summit to send me the parts by stating the truck was for off-road use. Per the Referee I spoke to, you don't need an EO number to change the intake as long as it is a stock replacement. I had to walk the smog shop through it, but I was able to smog it and sell it a week later.

 

[Surfdude]

I just put a Performer on my '79 K15 with a stock 350 in December to smog and sell it. PM me your email address and I send you the info. I got Summit to send me the parts by stating the truck was for off-road use. Per the Referee I spoke to, you don't need an EO number to change the intake as long as it is a stock replacement. I had to walk the smog shop through it, but I was able to smog it and sell it a week later.

Craig. Pm'd. Thanks for the ingfo

Sent from my SM-T377T using Tapatalk

 

[Craig 85]

Info e-mailed.

 

[MikeB]

Thanks for the post. Summit cannot ship that to me here in California.

Maybe you can find one on craigslist or eBay. You must feel like a prisoner of the state out there!

 

[Craig 85]

Maybe you can find one on craigslist or eBay. You must feel like a prisoner of the state out there!

You just have to tell Summit it's going on an "off-road" vehicle and they will ship it.