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Exhaust manifold help

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Old Nov 26, 2020 | 12:20 PM
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Default Exhaust manifold help

I’m putting an LM7 in a Porsche 944 and I’d like to avoid the $2k price tag for conversion headers and honestly I prefer manifolds anyway. There is very little clearance on the drivers side because of the steering shaft. It looks like some of the aftermarket manifolds may work, but I’ve had a tough time finding dimensions.

These look like they may work.
https://www.holley.com/products/exha...xoCCF0QAvD_BwE

If anyone has some measurements from any of the aftermarket manifolds could you please post them? I’d greatly appreciate any help!

Ive searched, and have only found a few threads that are 5+ years old with little measurement info.

Cars current state.


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Old Nov 26, 2020 | 01:36 PM
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The Holley manifolds that provide the most steering shaft clearance, by far, are the 71223026HKR manifolds listed under the S10 truck swap application. I don’t know if there is an equivalent set to that offered under the Flowtech brand.
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Old Nov 26, 2020 | 02:16 PM
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Originally Posted by Toddoky
The Holley manifolds that provide the most steering shaft clearance, by far, are the 71223026HKR manifolds listed under the S10 truck swap application. I don’t know if there is an equivalent set to that offered under the Flowtech brand.
Thanks for the reply! I’m not partial to any brand. I have seen them and posted on a v8 s10 page on Facebook with no luck. I just hate to buy them to have to ship them back.
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Old Nov 26, 2020 | 02:42 PM
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Highly likely that trial and error is gonna be your only course for manifold fitment...
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Old Nov 26, 2020 | 09:05 PM
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From: Little Austin
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Originally Posted by Toddoky
The Holley manifolds that provide the most steering shaft clearance, by far, are the 71223026HKR manifolds listed under the S10 truck swap application. I don’t know if there is an equivalent set to that offered under the Flowtech brand.
Todd,

Why are there no dimensional drawings for the S10 manifolds?

Andrew
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Old Nov 26, 2020 | 10:21 PM
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I did come across this, not the s10 manifolds but it’s a start.

https://www.hawksmotorsports.com/lsx...coated-hooker/

they include some dimensions. It looks like they reference the flat surface on the rear of the block.


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Old Nov 28, 2020 | 03:08 PM
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Would regular LS3 manifolds not fit ? They should be cheaply and readily available
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