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General Category => Engine, Transmission, & Rear Axle assy. => Topic started by: hoffbug on May 11, 2014, 08:59:28 PM

Title: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: hoffbug on May 11, 2014, 08:59:28 PM
Does anyone know if the 64-67 Buick 300 exhaust manifolds will work on an Olds 215?  Is there any weird angles, plug intefearance, or other issues?
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: mgb260 on May 11, 2014, 09:00:59 PM
They will bolt up to the motor but you may have firewall clearance issues.
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: hoffbug on May 11, 2014, 09:16:59 PM
OK. This would be going tinto a Vega.
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: roverman on May 12, 2014, 10:56:37 AM
IME, They always dump/fit better. Less prone to cracking, flow better = win/win.  roverman.
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: MGBV8 on May 12, 2014, 12:17:05 PM
Buick 300 exhaust manifolds on Olds 215 heads?  I have a set of Buick 215 exhaust manifolds you can have if they will help.
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: hoffbug on May 12, 2014, 12:26:53 PM
Thanks Carl... I have a set of 300 manifolds but they are in storage right now...Just wont be able to get to them for a while.

 Were the 64 300 manifolds different than the 65-67 manifolds? I know the heads are different.

After years of collecting parts and dust Ive finally come to the point I need to do something with the Vega?Astre project and all the parts Ive collected,  or just sell it all....

The stroker engine would have to be put on hold... I have a bone stock Olds 215 I could rebuild and get all the running gear sorted out and this thing ruuning and road worthy... Then I could always install the stroker down the road .
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: mgb260 on May 12, 2014, 01:04:41 PM
Tony, This old Phil Baker article shows the 300 exhaust manifolds compared to 215. Phil said they dump better for the Vega. Lots of other info in the article.

http://www.teambuick.com/reference/library/affordable_aluminum_v-8.php
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: hoffbug on May 13, 2014, 02:21:20 PM
I have the article. I had spoken with Phil a few times in the past...Just a really nice guy.

  I just wasnt sure of the Olds heads in Particular... They are layed out a little different than the Buick heads.
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: joe_padavano on May 16, 2014, 11:19:36 AM
"I just wasnt sure of the Olds heads in Particular... They are layed out a little different than the Buick heads."

The intake and exhaust flanges on the Olds and Buick heads are exactly the same.
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: Moderator on May 16, 2014, 05:24:54 PM
Exhaust port and bolt layout are the same for all 215s, but spark plug location and angle vary between Olds and Buick. I don't know if spark plug clearance might effect fitment of 300 heads on an Olds 215.
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: BlownMGB-V8 on May 18, 2014, 08:22:31 AM
The flange location between the Olds and Buick 215 is slightly different but the same headers will fit. Just makes a slight difference in body clearance.

Jim
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: hoffbug on May 18, 2014, 03:46:24 PM
What about spark plug access?
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: BlownMGB-V8 on May 18, 2014, 06:34:19 PM
You may have to cut away the straps between the ports on the header flanges.

Jim
Title: Re: 64-67 Buick 300 exhaut manifolds. On an Olds 215?
Post by: hoffbug on May 18, 2014, 07:30:26 PM
But the stock cast iron 64 -67 manifold don't present any plug access issues on Olds heads?
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