Thread: EFI twin snorkel setup

I reckon twin snorkels would slow you down more by increased air resistance than any gain from extra air flow! The 4.2 is still a small bore motor and one 3" snorkel will be fine. Just pay attention to bends and junctions, make sure they are smooth transitions.

is there enough room to run the drivers side across inside the scuttle panel and join the pass side via a Y piece then just run to the airbox as one pipe as per normal??

i vaguely remember hearing of someone doing it this way on an EFI setup.


That orange 2 door on 37's has twin snorkels and efi, someone on here now owns it, maybe they have pics??

Originally Posted by Ye Olde Rangie

Hi all tomorrow ill start my custom snorkel setup, so my question is firstly is 3" enough air feed for a 4.2 stroker motor, if not ill be building a custom airbox and run twin snorkels but my problem is that my car has very little room under the bonnet left so the airbox is easy enough but im wanting to know whether anybody has done such a job and do you have pictures.
Thanks Tim

Tim I will post a pic of my setup on a 4L (with 3.5 EFI), my setup is 90mm because that is the size of the downpipe fittings I used, no problems with airflow, esp if using round air filter housing and plumbing in the end like I have done, Regards Frank.