[ZL1Atlanta]

Originally Posted by toohighpsi

OK, here we go. I tried my best to make sure they had the same components included in each weight although I just noticed that from the pictures that I left the throttle body bolts in the 1740, should only account for a couple ounces.

Attachment 1155438

First the TVS 1740 - this is the tall lid tilted brick unit, its weight is 68lbs 2oz.

Attachment 1155439

Next is the Maggie TVS 2650 - this is the original 3 piece housing, its weight is 84lbs 10oz.
I don't know if the newer once piece housing is lighter or heavier.

Attachment 1155440

Finally, I had a THP lid laying there so with the that 2650 weight was 82lbs 15oz.


So in summary the TVS 2650 weights 16lbs 8oz more than the LT4 1740SC

Thanks, Mike! That was definitely a question that has been out there for a while. Also cool to see that this sweet lid saves a couple pounds on its own.

[radz28]

Thanks Mike! That weight difference for performance is great. I love how much louder your billet lid makes the whine, too. I don't know if I like the whine more than the PI to run full E'

[Camfab]

Thank you very much, that differential is substantially less than all the conjecture. Repeated calls to Magnuson never went anywhere. All this time it left the perception in my mind that they didn’t want to reveal that there was a large weight penalty. Poor marketing in my mind.

[RobZL1]

Originally Posted by Camfab

Thank you very much, that differential is substantially less than all the conjecture. Repeated calls to Magnuson never went anywhere. All this time it left the perception in my mind that they didn’t want to reveal that there was a large weight penalty. Poor marketing in my mind.

Just cause Mike's not running it anymore.

[Tim M]

Very useful - thanks for posting. The LT4 blower weight syncs with my sampling:



Of course, the ancillaries will add to the mass - likely the aftermarket offering includes more substantial radiator(s), increased water capacity, pump, etc. GM's finger thin heat exchanger with plastic end tanks is about as light as on can get.

Might you have a Whipple to weight?

[radz28]

Originally Posted by RobZL1

Just cause Mike's not running it anymore.

this