1-3/4 vs. 1-7/8.

[Zemedici]

The Coyote flows way more than enough to warrant the 1-7/8" in NA form. As bluebeastsrt pointed out, the head flow on the Coyote is one of the reasons. You also have to consider the cam profile, compression AND RPM. The Coyote has healthy compression and can turn some RPM, two of the main reasons to go with the larger primary.

are there any dyno sheets to prove this? I've yet to see any, and cam as well as RPM are what I stated in my post above

Sponsored

 

[marylandspeed]

Almost everyone runs 1 7/8" on these anymore with no issues. If you decide to buy, call us for the hook up!

 

[RBS550]

I was recently told that the larger diameter headers produce the most power at the higher RPMs as opposed to the smaller diameter headers (1-3/4) which produce the most power at lower RPMs. Opinions?

As a side note: I do understand the reason for having a larger diameter header set up for FI, but is that where the benefit ends?

I also came from the Old School experience that the bigger would not benefit such a small N/A engine, but we need to put that thinking aside with the Coyote. I went with 1-7/8" reluctantly, but look at my end results! this car pulls out the back door! And I'm still stuck with 3.15s in an auto at 3,860 lbs! The only combo slower would be if I were a convertible.

[ame]

 

[LethalPerformance]

For anyone interested in the 1-3/4" setup we have a smoking deal going on through midnight on Monday on the kooks 1-3/4" headers. You must be registered and logged in to your lethal performance account to see your lethal loyalty pricing.

Give us a call if you have any questions.

Sponsored