Using aluminum 1983 intake with 1979 stuff

#1
So I want to use the 83 aluminum intake on my 79 engine. Should I drill and tap the aluminum intake for the PEVR? Where should I drill and tap for the knock sensor. I have read about the check valve used instead of the PEVR so should I do this instead? Also, will the newer style knock sensor work with the stock timing box? Reason I ask, I have a new one in box for an 87 GN. I know the connector is different. I would like some input as far as what you would do. I would like to keep the stock 1979 carb, distributor, and timing control box.
 

WarWagon

Caustic Cacophony
#2
Use the '79 knock sensor, find a spot In the block and screw it in, it doesn't matter where as the cycle rate is pretty slow. If you have a working PEVR and want to use it, look on the '83 intake manifold. Should be a port on one intake runner plumb it in there.
 

b4black

Well-Known Member
#3
Yep, the knock sensor won't work in the aluminum intake. Buick moved it to block, in the flat spot between the intake and the transmission. Same place as a 87 GN if you want to search for pictures.
 
#6
So this is where you have been hiding? The knock sensors are different. You can not use the older one for a newer ESC module. I tried. There should be a hole already for the knock sensor in rear of the block just a head of the transmission. The newer knock sensor screws into the front of a 87 intake water jacket. There should be a tapped hole for PEVR in the intake a head of the carb. I can take pictures of it if you need? 20180118_201636.jpg
 
#7
So this is where you have been hiding? The knock sensors are different. You can not use the older one for a newer ESC module. I tried. There should be a hole already for the knock sensor in rear of the block just a head of the transmission. The newer knock sensor screws into the front of a 87 intake water jacket. There should be a tapped hole for PEVR in the intake a head of the carb. I can take pictures of it if you need? View attachment 322645
My 1983 aluminum intake is different from your 80 cast iron one. I really don't remember a PEVR on the 1983 aluminum intake either.
20180611_144427_resized.jpg
I don't have a hole in my block for a knock sensor and there is no flat pad.
 

b4black

Well-Known Member
#8
A 1979 block won't have the hole as you just found out. I believe for 1980 (first year for the aluminum intake), they just drilled and tapped the block next the the big "3" in your picture.

1983 did not use a PEVR, so there is no hole. ('83 used computer controls).

I don't know if using the '83 intake is worth the headaches.
 

WarWagon

Caustic Cacophony
#9
The aluminum intake is better than the cast iron manifold and worth installing but they are still both horrible intake manifolds.
 
#10
So my 80 setup must be the more desirable one to have if you want to go that route? Hafrod I will sell you my crap if you want. Probably too expensive to ship. My intake is aluminum. I see no point in using this stuff after feeling the changes I have made, unless of course you are restoring a rare car like yours. If it was me I would put a hole 85 top end on that engine. No one, except the purist would know the difference.
 
#11
So my 80 setup must be the more desirable one to have if you want to go that route? Hafrod I will sell you my crap if you want. Probably too expensive to ship. My intake is aluminum. I see no point in using this stuff after feeling the changes I have made, unless of course you are restoring a rare car like yours. If it was me I would put a hole 85 top end on that engine. No one, except the purist would know the difference.
Figure out shipping. I'm interested for sure