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Manifold/riser options for the 454

Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=48944
Printed Date: October-05-2024 at 10:31pm


Topic: Manifold/riser options for the 454
Posted By: DayTony
Subject: Manifold/riser options for the 454
Date Posted: June-25-2020 at 11:37am
I was just told the pcm risers for my 454 are NLA. Which i didnt realize before.
Now it isnt something i NEED to do but wanted to discuss options here for the "if and when" i need to adress them.
Aside from getting a good used set from someone here what are new off the shelf options?

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1988 Barefoot nautique-454



Replies:
Posted By: 8122pbrainard
Date Posted: June-25-2020 at 12:04pm
Originally posted by DayTony DayTony wrote:

I was just told the pcm risers for my 454 are NLA. Which i didnt realize before.
Now it isnt something i NEED to do but wanted to discuss options here for the "if and when" i need to adress them.
Aside from getting a good used set from someone here what are new off the shelf options?

Where have you been shopping? http://www.marineengine.com/parts/barr-marine-manifolds/chevrolet-big-block-427-454-generic.htm" rel="nofollow - Looks like Osco have some.

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/diaries/details.asp?ID=1622" rel="nofollow -

54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
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Posted By: DayTony
Date Posted: June-25-2020 at 3:09pm
So i was shopping at skidim.
https://www.skidim.com/mobile/products.asp?dept=1159

Looks like the factory sweep style is not available for the 3.5" thats on the bbc. They only list it in 3".
They told me the oscar style that they carry in 3.5" will not mate to the factory pcm manifolds. So in order to run them you would need to change both manifold and riser to make them work.





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1988 Barefoot nautique-454



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