228R cam with turbo?
The specs on the 228r cam are about perfect for a 346 street car. I say about because it runs on XER lobes and those are not the most valve train friendly ramp rates. The valve events are great though, basically the bigger brother to the speed inc tu1.
ive always been a fun of running more of an 'N/A' cam in a turbo app because i have yet to see a so called 'N/A' cam not do well under boost. if you make good power n/a, add approx 30hp for every psi you plan on running.
my car made 380 before the turbo. then i added 9psi and according to the 30hp/psi it should be around 650, it made 630 which is pretty darn close considering thats a VERY rough estimate. (the cam only numbers were also through a ten bolt, the turbo numbers were through a 9in.. same dyno for both though)
this also why you hear people say just run the cam you have, if you already have one.
id go 228R, it has a better power band than the MS3
it will bleed some boost, but if anything itll just help the motor survive a lil longer haha.
ive always been a fun of running more of an 'N/A' cam in a turbo app because i have yet to see a so called 'N/A' cam not do well under boost. if you make good power n/a, add approx 30hp for every psi you plan on running.
my car made 380 before the turbo. then i added 9psi and according to the 30hp/psi it should be around 650, it made 630 which is pretty darn close considering thats a VERY rough estimate. (the cam only numbers were also through a ten bolt, the turbo numbers were through a 9in.. same dyno for both though)
this also why you hear people say just run the cam you have, if you already have one.
id go 228R, it has a better power band than the MS3
ive always been a fun of running more of an 'N/A' cam in a turbo app because i have yet to see a so called 'N/A' cam not do well under boost. if you make good power n/a, add approx 30hp for every psi you plan on running.
my car made 380 before the turbo. then i added 9psi and according to the 30hp/psi it should be around 650, it made 630 which is pretty darn close considering thats a VERY rough estimate. (the cam only numbers were also through a ten bolt, the turbo numbers were through a 9in.. same dyno for both though)
this also why you hear people say just run the cam you have, if you already have one.
id go 228R, it has a better power band than the MS3
Trending Topics
Try running a TSP giant under boost. It will make power but it's not a good cam for boost, yet it runs like crazy N/A and on spray. You will find the more you turn up the boost on a more N/A style cam it will lose more power compared to a correctly spec's turbo cam.
i was more referring to those of us who go from h/c to turbo and that we shouldnt really shy away from n/a cams at that level because its not really worth the effort. the car is gonna make more than enough power.
when going through the hassle of building a motor, by all means get a turbo cam spec'd
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
that cam is not perfect for boost, but it does a damn good job. i used it with my d1 and 346 and made great power. its also a great DD N/A. mine was 114lsa though. 393rwhp NA before better fuel and UD pulley.
35thcamaross is another guy i know with boost and that cam. and no probs with that cam at all.
35thcamaross is another guy i know with boost and that cam. and no probs with that cam at all.
Not so. There are guys here pushing crazy amounts of boost on these stock motors and were not talking about one or two guys. If there are guys who are running minimal amounts of boost its because they are afraid to turn it up to break something but we all know if the tune is right it will live. So put in a good cam, turn up the boost and have fun.
yeah as mentioned....the camaro I was talking about is making 11 lbs of boost with the 228, and making 668rwhp. seems like he's running a 4.x pulley, and still has the ability to go all the way down to the 3.4
I am running a 224/228@114. Have yet to get it on the dyno, but am in to see others results as well.
***Edit... Just checked the pics from my build and I was mistaken. Its 224/230@114. Comp cams XER273HR-14***
***Edit... Just checked the pics from my build and I was mistaken. Its 224/230@114. Comp cams XER273HR-14***
Last edited by Strokinit383; Sep 25, 2012 at 10:35 AM.
