Why aren't L5P heads on older gen trucks?

PureHybrid

Isuzu Shakes IT
Feb 15, 2012
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We all know how it went last time Brodix made duramax heads................... Ask all the Wagler customers who Jeremy and Brodix screwed over.............
Oh I know it was a chit show, but I'm sure there's details nobody knows. Only reason I mention Brodix is probably one of 2 places that usually work with the customer and can do custom changes to existing castings. Personally I think AFR should try their hand but it's more than likely too low volume
 

Bdsankey

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Feb 1, 2018
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Larsen, Wisconsin
Oh I know it was a chit show, but I'm sure there's details nobody knows. Only reason I mention Brodix is probably one of 2 places that usually work with the customer and can do custom changes to existing castings. Personally I think AFR should try their hand but it's more than likely too low volume
Mast was making them for Kill Devil. I've used some of their LB7 heads and have been very happy with them. I don't know if they're still making them.
 

Woody35

Member
Jan 4, 2013
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What’s the consensus on Edelbrock heads? I know Nick had a video about them when they came out. Seemed to pick up a little power at lower RPM. It doesn’t seem like they have sold a lot of them.
 

PureHybrid

Isuzu Shakes IT
Feb 15, 2012
3,543
527
113
Central OH
I don't remember what the max flow numbers were, but the video I saw where Nick ran a set on the dyno he wasn't anywhere near the power needed to test the heads IMO
 

Bdsankey

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Feb 1, 2018
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Larsen, Wisconsin
What’s the consensus on Edelbrock heads? I know Nick had a video about them when they came out. Seemed to pick up a little power at lower RPM. It doesn’t seem like they have sold a lot of them.
For the money, Fleece heads are not able to be touched.

Edelbrock and Mast are nice pieces, but I would not spend the extra coin on them. Also, they're not available for all models either.
 

1FastBrick

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Dec 1, 2016
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Junkyard
I don't remember what the max flow numbers were, but the video I saw where Nick ran a set on the dyno he wasn't anywhere near the power needed to test the heads IMO
The Changes that Edelbrock incorporated did seem to pick up but according to Nick, the spring package was holding it back when he pushed it.

FED, Frankenstein Engine Dynamics ported some but I never heard what the results where after porting. They do offer the service though.https://frankensteined.net/product/duramax-stage-1-assembled-set/

Here is Nick's video

Source: https://www.youtube.com/watch?v=HSFfvNsdno0
 

1FastBrick

Well-known member
Dec 1, 2016
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For the money, Fleece heads are not able to be touched.

Edelbrock and Mast are nice pieces, but I would not spend the extra coin on them. Also, they're not available for all models either.
I didn't know Mast had a Duramax head.

I found this post from Kill Devil Diesel but all the links are broken. I can't find any other info from MAST or KDD

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