Would you like to share your ideas on where you would vest $106 on your vehicle. Maybe we could bounce ideas off on another.

 

https://www.aulro.com/afvb/technical...tml#post841055

 

so, fitting the GEMS intake could provide worse fuel mileage, lower low end torque and hp and maybe better top end horse power?

am i reading that correctly?

 

From what has been gathered yes, however, no real numbers to justify, I believe motortrend tv on YT had done an Intake manifold shootout (long,mid and shorty) and proved the longer manifold runner to be more stout , but only with carburetors fitted. As far as fuel efficiency, ??, it’s a V8 and heavy, I have a bicycle for efficiency.

 

Could shorten the trumpets supposedly that helps a bit with power on that intake.

To be honest if it makes you happy than it was worth it either way

 

Correct, could shorten or elongate. There are a set of carbon fibre ones as well, that is just too nice for a disco though.

 

Too bad the BMW engineers that redesigned the manifold didnt have motortrend tv

 

Thats what I’m saying.... A multi million $ Corp and couldn’t post any numbers of such, just hear-say. Must be the same folks that continued milling the intake manifolds and liner bores with the same bit.... just saying. What else did the bmw peeps redesign?

 

You can compare early 99 p38 to late 99 p38 dyno charts and see the powerband shift

 

The old Buick/Rover V8 was never about HP, it was low end grunt. The 4.6L was the last attempt at improving the old design & it came with it’s ups & downs.

I agree it’s now a powerful engine, but it hauls all my D1/D2’s around with no problem & it’s fantastic off road. Zero complaints from me really.

I would love a 4.8L LS in a D2 one day, but until then I’m happy.