5.3, On3 76, 2" crossover?
Thread Starter
Teching In
Joined: Jan 2006
Posts: 26
Likes: 0
From: Lansing, MI
5.3, On3 76, 2" crossover? Planning the hotside soon and I have access to 2" weld ells and sch 40 pipe. I'm using a LH6 5.3, 799 heads, TU1 cam, Camaro manis, On3 journal 76 .96 AR. I know most people use 2-1/4 or 2-1/2, will the 2" be too small? I searched thru a few threads regarding cross over size, and followed some of Phil's math, but I'm still unsure. This will be track only, and most likely non-intercooled.
This shouldn't be a big deal at all... the freakin Exducer on that turbo is 74.5mm (roughly 2 15/16"). You're stuffing two banks of 4 cylinders into this unit. I don't see a 2" (I personally, wouldn't go any smaller than that, so be sure to use mandrel bends, or you'll be closer to 1 3/4" after bending) being a problem with that turbo on a 5.3. Should be a fun setup!
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
9 Second Club
Joined: Dec 2010
Posts: 147
Likes: 0
From: Michigan
2" weld els have an inside diameter of 2.1xx so roughly 2 1/8" IDK if being sch. 40 changes that or not but thats what my sch. 10 2" pipe is. You'll be fine with that. That turbine will be the restriction if anything. My log's are 2" sch. 10
