differances in small block intake manifolds?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

VanceH · 07-19-2008, 10:55 PM

Ok i went to a swap meet and bought a small block manifold. I went to take the old one out(cast) and it seems to be different. Mine in the 67 has a oil filler thru the front of the manifold the new one does not? Other than that they look alike. Did i mess up or is there something i am missing.

thanks
Vance

Longhorn Man · 07-19-2008, 11:08 PM

they did away with that in 69. If you just install valve covers with an oil fill hole, a breather, and a PCV, then you'll be way ahead of the game. The PCV is a smog item that does only good things to your engine. (the oil fill was also a vent for the old road draft system which was replaced by the PCV in trucks in 69)

VanceH · 07-19-2008, 11:18 PM

Thats one down and i thank you!!! now after looking more my old manifold has a bolt hole for my altinator barcket on the right face (as you stand in front), the new intake has a bolt hole on the top left? New braket?
Thanks

VanceH · 07-20-2008, 10:42 AM

Here is a pic of the new manifold. What is te hole on the back left?? the old one does not seem to have this??

thanks
vance

msgross · 07-20-2008, 11:35 AM

That far left hole upper is for a vacuum port. You can plug it off with a screw-in plug or use it for a vac gauge/brake booster etc..

Some newer intakes also have the area that can be drilled out to place that old oil filler neck into. I have thought about adding one again but just went ahead and bought a breather for the valve cover. If your valve covers don't have holes then you have another issue.

also make sure that your old thermostat housing bolts down all the way before you add silicone. My edelbrock intake didn't want to take mine, but a newer one fit... could have been the helicoil that I found in it as well...

VanceH · 07-20-2008, 11:46 AM

Thank you but what about the flat spot on the rear left? not sure what that is

msgross · 07-20-2008, 11:55 AM

Quote:

Originally Posted by VanceH

Thank you but what about the flat spot on the rear left? not sure what that is

looks like maybe an area for a divorced choke. My 68 had one kinda like it, there is another piece that bolts onto that. it would have a coil inside that reacts to the heat of the intake and moves a bar to adjust the choke.

Not for sure but that's my guess...

**fine69** · 07-20-2008, 12:09 PM

You bought a manifold for a 70's engine. It has the EGR (exhaust gas recirulation) spot. You will need to install an EGR valve. Or a blockoff plate.

VanceH · 07-20-2008, 12:17 PM

The amount of information on this board should be illegal!!!!! Thank you for your help i will just get a block and shut that off.

Thanks again

BLACK AND BLUE 67-72 · 07-20-2008, 12:18 PM

The flat spot is for an EGR valve, or an EGR block off plate.

msgross · 07-20-2008, 12:32 PM

after looking at it again my divorced choke mount is directly beside the carb.

Longhorn Man · 07-20-2008, 01:55 PM

The block off plate can be made easily with minimal fabrication, or, you could probably go to edelbrock's www and see if they sell it alone, I had picked up a new performer back in 2000 and it came with the plate.

VanceH · 07-20-2008, 04:38 PM

Very nice everyone, i went to autozone and ordered a blank for that hole, and about 150 bucks for everything else i need to get this done, as soon as it cools off i am going to start.

thanks again for all the help

vance

VanceH · 07-21-2008, 12:20 AM

I spent this evening taking off the old manifold and putting the new one one, i still have the carb to finish up Monday night but hope to have it back running by Tuesday.

Thanks again for all the help
vance

**fine69** · 07-21-2008, 02:32 AM

Anytime Vance. Thats what we are here for.

07-19-2008, 10:55 PM	#1
VanceH Loving the Jimmster Join Date: Jun 2008 Location: Emmett, idaho Posts: 575	differances in small block intake manifolds?? Ok i went to a swap meet and bought a small block manifold. I went to take the old one out(cast) and it seems to be different. Mine in the 67 has a oil filler thru the front of the manifold the new one does not? Other than that they look alike. Did i mess up or is there something i am missing. thanks Vance

07-19-2008, 11:08 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: differances in small block intake manifolds?? they did away with that in 69. If you just install valve covers with an oil fill hole, a breather, and a PCV, then you'll be way ahead of the game. The PCV is a smog item that does only good things to your engine. (the oil fill was also a vent for the old road draft system which was replaced by the PCV in trucks in 69)

07-19-2008, 11:18 PM	#3
VanceH Loving the Jimmster Join Date: Jun 2008 Location: Emmett, idaho Posts: 575	Re: differances in small block intake manifolds?? Thats one down and i thank you!!! now after looking more my old manifold has a bolt hole for my altinator barcket on the right face (as you stand in front), the new intake has a bolt hole on the top left? New braket? Thanks

07-20-2008, 10:42 AM	#4
VanceH Loving the Jimmster Join Date: Jun 2008 Location: Emmett, idaho Posts: 575	Re: differances in small block intake manifolds?? Here is a pic of the new manifold. What is te hole on the back left?? the old one does not seem to have this?? thanks vance Attached Images Last edited by VanceH; 07-20-2008 at 10:49 AM.

07-20-2008, 11:35 AM	#5
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: differances in small block intake manifolds?? That far left hole upper is for a vacuum port. You can plug it off with a screw-in plug or use it for a vac gauge/brake booster etc.. Some newer intakes also have the area that can be drilled out to place that old oil filler neck into. I have thought about adding one again but just went ahead and bought a breather for the valve cover. If your valve covers don't have holes then you have another issue. also make sure that your old thermostat housing bolts down all the way before you add silicone. My edelbrock intake didn't want to take mine, but a newer one fit... could have been the helicoil that I found in it as well... __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" Last edited by msgross; 07-20-2008 at 11:37 AM.

07-20-2008, 11:46 AM	#6
VanceH Loving the Jimmster Join Date: Jun 2008 Location: Emmett, idaho Posts: 575	Re: differances in small block intake manifolds?? Thank you but what about the flat spot on the rear left? not sure what that is

07-20-2008, 12:09 PM	#8
fine69 Senior Member Join Date: Dec 1999 Location: Urbana,Ohio,USA Posts: 4,618	Re: differances in small block intake manifolds?? You bought a manifold for a 70's engine. It has the EGR (exhaust gas recirulation) spot. You will need to install an EGR valve. Or a blockoff plate. __________________ 2008 Chevy HHR 1/2 panel. 1949 Chevy Panel truck(just sittin, waiting) Board member #6

07-20-2008, 12:17 PM	#9
VanceH Loving the Jimmster Join Date: Jun 2008 Location: Emmett, idaho Posts: 575	Re: differances in small block intake manifolds?? The amount of information on this board should be illegal!!!!! Thank you for your help i will just get a block and shut that off. Thanks again

07-20-2008, 12:18 PM	#10
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Re: differances in small block intake manifolds?? The flat spot is for an EGR valve, or an EGR block off plate. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

07-20-2008, 12:32 PM	#11
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: differances in small block intake manifolds?? after looking at it again my divorced choke mount is directly beside the carb. __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

07-20-2008, 01:55 PM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: differances in small block intake manifolds?? The block off plate can be made easily with minimal fabrication, or, you could probably go to edelbrock's www and see if they sell it alone, I had picked up a new performer back in 2000 and it came with the plate.

07-20-2008, 04:38 PM	#13
VanceH Loving the Jimmster Join Date: Jun 2008 Location: Emmett, idaho Posts: 575	Re: differances in small block intake manifolds?? Very nice everyone, i went to autozone and ordered a blank for that hole, and about 150 bucks for everything else i need to get this done, as soon as it cools off i am going to start. thanks again for all the help vance

07-21-2008, 12:20 AM	#14
VanceH Loving the Jimmster Join Date: Jun 2008 Location: Emmett, idaho Posts: 575	Re: differances in small block intake manifolds?? I spent this evening taking off the old manifold and putting the new one one, i still have the carb to finish up Monday night but hope to have it back running by Tuesday. Thanks again for all the help vance

07-21-2008, 02:32 AM	#15
fine69 Senior Member Join Date: Dec 1999 Location: Urbana,Ohio,USA Posts: 4,618	Re: differances in small block intake manifolds?? Anytime Vance. Thats what we are here for. __________________ 2008 Chevy HHR 1/2 panel. 1949 Chevy Panel truck(just sittin, waiting) Board member #6



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.