front accessory brackets

Reply Subscribe

Thread Tools

Search this Thread

Nov 23, 2009 | 09:43 PM

Chrisjenson9478

Thread Starter

Intermediate

Joined: Aug 2007

Posts: 27

Likes: 0

From: Springfield Or

front accessory brackets

just finishing up my 383 build when I went to mount the front accessory bracket and realised the bracket on the passenger side wont bolt up. the problem is the cylinder head doesn't have one the upper bolt hole tapped out its the one closes to the intake. is there something I can do? please help

Nov 23, 2009 | 11:51 PM

383vett

Race Director

Joined: Apr 2003

Posts: 17,700

Likes: 1,667

From: moraga ca

Drill and tap a 3/8" hole. If you have a good eye and guts, try it in the car with the heads on.

Nov 24, 2009 | 11:39 AM

94vettelover2

Burning Brakes

Joined: Oct 2009

Posts: 773

Likes: 2

From: Minneapolis MN

Quote:

Originally Posted by 383vett

Drill and tap a 3/8" hole. If you have a good eye and guts, try it in the car with the heads on.

Thats scary.How many bolt holes are there to mount bracket?If you have a bolt hole above & below that missing hole you should be fine.I personally would not drill into head

Nov 24, 2009 | 11:48 AM

Chrisjenson9478

Thread Starter

Intermediate

Joined: Aug 2007

Posts: 27

Likes: 0

From: Springfield Or

I don't know if I wont to risk a head on a maybe, but lets say I did are you talking 3/8th in depth.

Nov 24, 2009 | 11:50 AM

Chrisjenson9478

Thread Starter

Intermediate

Joined: Aug 2007

Posts: 27

Likes: 0

From: Springfield Or

would just having two bolt really do the job your would the torque from the engine cause the bracket to rock back and forth

Nov 24, 2009 | 11:52 AM

Pete K

Race Director

Joined: Feb 2004

Posts: 12,518

Likes: 19

Quote:

Originally Posted by Chrisjenson9478

I don't know if I wont to risk a head on a maybe, but lets say I did are you talking 3/8th in depth.

There is no maybe. This is kids stuff.
It is a piece of cast iron. Drill it, tap it and be done.
Thats what they do when they make blocks and heads.

Nov 24, 2009 | 11:53 AM

Pete K

Race Director

Joined: Feb 2004

Posts: 12,518

Likes: 19

Quote:

Originally Posted by Chrisjenson9478

would just having two bolt really do the job your would the torque from the engine cause the bracket to rock back and forth

Try it and see. If it snaps off, you will know.
GM put the holes there in the later years to accomidate the modern brackets. If they engineered for it, they likely need to be there.