Chris Tropea
Chris Tropea Associate Editor
1/22/25 6:00 p.m.

https://www.youtube.com/embed/ru6oEZ3hHYs?si=pW3ELtO4eSK2CmgR

Terry Fair calls his car “Trigger.” Why? It’s an LS-swapped Ford Mustang time attack car that’s sure to irk some Ford and Chevy fans.

But there’s much more to this build, which competed in our annual Tire Rack Ultimate Track Car Challenge presented by Grassroots Motor…

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Chris Tropea
Chris Tropea Associate Editor
1/23/25 10:22 a.m.

It was amazing to see just how much smaller an LS is compared to a Coyote in the engine bay of a S550. 

A 401 CJ
A 401 CJ UltraDork
1/24/25 7:58 a.m.
Chris Tropea said:

It was amazing to see just how much smaller an LS is compared to a Coyote in the engine bay of a S550. 

I don't think the Coyote is too far from the old 427 SOHC in terms of size.  It's just insanely big.

J.A. Ackley
J.A. Ackley Senior Editor
1/24/25 10:53 a.m.

BTW: For those wondering, this was the car in our booth at PRI in December.

RaceRed
RaceRed New Reader
1/27/25 9:53 a.m.

In reply to Chris Tropea :

The difference between four valve heads...they're really big...and two valve pushrod driven heads.  The advantage with the four valve heads is of course breathing.  Stock Coyote heads will out breath an FR NASCAR head no problem.  The downside, is cost.  Any chain driven multi-valve head motor will cost more in both development and manufacturing.          

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