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Exhaust question.

 
smittysmith
I love my Chevy Chevette!
Posts: 5
Joined: 07/13
Posted: 07/18/13 06:14 PM

Just wondering if stock 305 ex. manifolds would fit on a 350 with vortec heads.Any and all advice welcome, and thanks in advance.
                                             Bob.  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 07/18/13 06:33 PM

I going to say yes because both manifold look the same but you should look at the exhaust port shape to make sure they are the same.  
68scott385 68scott385 68scott385

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smittysmith
I love my Chevy Chevette!
Posts: 5
Joined: 07/13
Posted: 07/19/13 05:32 AM

Thanks Scott. I thought they should,but I don't have the 350 yet. I will check when I get it. If it looks like the flow will be impeded in any way, I'll probably go with some headers. Thanks again, Bob.  

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waynep712222
I have an SS396 tatoo
Posts: 251
Joined: 03/13
Posted: 07/19/13 07:28 AM

one thing...

there are 6 bolt exhaust patterns on SBC motors..

there are 7 bolt exhaust patterns on SBC motors.

there are also 8 bolt patterns on SBC motors..

-o0o--o00o--o0o  six bolt
oo0o--o00o--o0o  seven bolt pattern
oo0o--o00o--o0oo eight bolt pattern.

one has to look at the gasket face of the exhaust manifolds..

the passenger side usually is where the 7 bolt pattern is found..

on the gasket face.. of a 7 bolt exhaust manifold.. you will see this pattern.

o0o--o00o--o0 o    notice the gap. that would show up near the back of the head on the passenger side..

if you end up with 6 bolt heads... and have a 7 bolt exhaust manifold.. enginequest sells a 1/4" thick adaptor plate with one counter sunk location next to the gap. so you can use a 7 bolt manifold on a 6 bolt head.. #AH034

!Bdw2sewbwk~$(Kgrhqeh Dserer0u9tubk4jis7pkq~~ 12  

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smittysmith
I love my Chevy Chevette!
Posts: 5
Joined: 07/13
Posted: 07/19/13 08:33 AM

That is valuable information!Much appreciated,thanks Wayne.Bob.  

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