My engine build got under way this week. Here is the basic build:

5.0 stroker
Ported Heads
Comp Stage III cams
Vortech S-Trim - 15lbs
5-speed manual
4:10 gears

Engine builder reccomended 1-3/4 LT's, and my tuner suggested 1-5/8. Which way should I go?

 

When the ARH LT's came out, I heard alot of people with FI and cams going with 1 3/4 primaries for better exhaust flow on all of the group buy threads.

 

I would go with 1 3/4 but there are a lot of people saying 1 5/8 is ultimately just as good...

 

if your making more than 350 hp, i'd say 1-3/4, but at 350 or below, I'd stick with 1-5/8

 

1 3/4" are best for F/I applications