Has anyone tried the LSX DR/CR intake manifold on LS7 heads? I know the manifold bolt pattern is different, but if the ports match then drilling and tapping the heads for the new bolt pattern should not be a problem.

If tried, was it worth the effort? I am interested in using the tall deck 4500 intake manifold (P/N 19257852) on an all out 468 cid race boat engine which has WCCH LS7 heads.
Thanks
MrE

 

wont work cost will match MAST intake .....have GM intake ported ...... I'm waiting for LS3 Super Vic JIM said I will be the1st to have 1 from his shop.

 

It will work...this should answer your questions on how to make it work
https://ls1tech.com/forums/generatio...dr-intake.html

 

Wonder how much milling was needed and if that made the bolt holes line up?

 

why do you want to use the DR intake? for 1 4500, get the mast LS7

 

The GM DR manifold is readily available and about $1000 less money. I can easily mill the flanges and drill and tap my heads for the intake bolts. If the Mast manifold is worth substantially more power I might consider it... I am currently using the GM LS7 4150 manifold with a 4500 adapter and it works well... Without dyno proof I don't really think there is much power difference in any of these manifolds (LS7 4150, LSX-DR or the Mast). If anyone has some real data on this I would love to see it.
MrE

 

if you can wait until Apr i'll have some engine results...i'm using the Mast intake on an LSX 454 with some WCCH Brodix heads.

I also started down the path of using a different manifold that needed injector boss's machined and after the cost and really trusting who can do it right it wasn't worth.

 

Thanks, I really need to make a decision in the next few weeks. I'm hoping someone has some back to back performance data on these manifolds. Where are you located in AZ? I'd like to see that manifold and your LSX.
MrE

 

In chandler....currently im in Colorado for business but will be around by the week end if would like to see it.

 

ask and you shall receive...start with post 104.

https://ls1tech.com/forums/generatio...duction-6.html