Chevy Nova Forum banner

1 - 16 of 16 Posts

·
Registered
Joined
·
92 Posts
Discussion Starter · #1 ·


As you can see the heads are clearly centerbolts (#14101081) with a cast iron intake. i thought the center bolt heads had a different bolt pattern, so specific aftermarket intakes had to be used for a carburated setup:confused:. i have a older performer intake and would love to replace the cast on with it.:D

Is there a way to tell if it was the intake that was modified or the heads that were modified without removing the intake. if the intake was changed then my older performer will not fit :( but if it was the heads that we changed then i could mount the performer and junk the cast one.:eek:

please help me with this brain tickler:turn: the engine i believe is a ho 305
 

·
Registered
Joined
·
667 Posts
Look at the center bolts. If they are at the angle as the rest of them your heads have been modified. If they are closer to straight up then the intake is modified. I'll bet if you pull one of the bolts you'll see the holes were elongated.
 

·
Registered
Joined
·
92 Posts
Discussion Starter · #3 ·
Look at the center bolts. If they are at the angle as the rest of them your heads have been modified. If they are closer to straight up then the intake is modified. I'll bet if you pull one of the bolts you'll see the holes were elongated.
thank for the help if the manifold is the one that was modified i guess ill have to buy a intake or try to mod the one i have
 

·
Registered
Joined
·
667 Posts
Do a search on the modification. Lots of guys have done it. They still aren't selling the manifolds away for anything reasonable.
 

·
Registered
Joined
·
92 Posts
Discussion Starter · #6 ·
i see the bolts in the middle are strait up and down:) my first priority is to put gas in the tank so i dont think i could buy that intake Al not until the summer at least.
 

·
Registered
Joined
·
92 Posts
Discussion Starter · #9 ·
how difficult is it to change the intake is as simple as doing a little drilling:confused: or is more complicated than that.
 

·
Premium Member
Joined
·
15,966 Posts
how difficult is it to change the intake is as simple as doing a little drilling:confused: or is more complicated than that.

the drilling will not work. the bolt will not seat correctly and will crack the intake.

Al
 

·
Registered
Joined
·
667 Posts
That's a really good price on the manifold IMO.

The "knock-off" manifolds I saw at a swap meet a few years back were slotted to accept either head, but they had a wedge piece to install to get the bolt to make even contact. Kind of hoaky if you ask me.
 

·
Registered
Joined
·
1,799 Posts
I have centerbolt heads on my 327 that were not modified, and they have the std 1955-1986 intake drilling. They are from the old 300hp/350 crate engine that GMPP had in the mid 1990s, prior to the 330hp HO engine.

They did make iron centerbolts w/ standard intake drilling, but I think they only came on the crate engine.
 

·
Registered
Joined
·
92 Posts
Discussion Starter · #14 ·
im not sure what i will do. dont have the money to buy a brand new one, and im not sure if i want to drill it. ill wait until the weekend so then i can focus my mind powers on this idea. thanks for the help everyone:yes:
 

·
Premium Member
Joined
·
15,966 Posts
im not sure what i will do. dont have the money to buy a brand new one, and im not sure if i want to drill it. ill wait until the weekend so then i can focus my mind powers on this idea. thanks for the help everyone:yes:
I guess you don't see the fact I have one for sale for 75.00 shipped to your door.
Fits' 87-95 Chevy 5.0/5.7

How can you go wrong?

??????????????????

Al
 

·
Registered
Joined
·
92 Posts
Discussion Starter · #16 ·
I guess you don't see the fact I have one for sale for 75.00 shipped to your door.
Fits' 87-95 Chevy 5.0/5.7

How can you go wrong?

??????????????????

Al
after talking a good look at the aluminum intake it doesn't look like it can be drilled out without taking a fare bit of metal with it, leaving very little behind.

i think i might take you up on your offer on that intake, ill send a message your way.
 
1 - 16 of 16 Posts
Top