Fast 90/90 beneficial when running a reverse split cam like the X1?
Fast 90/90 beneficial when running a reverse split cam like the X1? I'm running an X1 cam with ported 243's and 1 3/4" longtubes and 2.5" X-pipe with Borla stinger catback. I have in LS6 intake currently. I bought the cam with intentions of having a high flowing exhaust and was told the reverse split would great since the LS6 intake would be the biggest restriction compared to the heads and exhaust. If I were to swap to a FAST setup or the new Weiand intake(if it comes out), would my gains be minimal due to the camshaft I'm running?
Restricted User
Joined: May 2006
Posts: 132
Likes: 0
From: virginia
TECH Fanatic
Joined: Jun 2002
Posts: 1,979
Likes: 3
From: Upstate NY
The best/correct response above was the shortest one. The source surprised me, however.
Trending Topics
TECH Fanatic
Joined: Jun 2002
Posts: 1,979
Likes: 3
From: Upstate NY
As has been mentioned, the RS cam is taking you the wrong way and you want to compound the problem. The logic of increasing the intake flow with a restricted exhaust duration and lift and then greatly increasing the needed exhaust flow with a 100 shot while keeping the same short exhuast duration/lift completely escapes me. I suspect your engine won't be too happy with that either.
If you mind really is open, get a decent cam designer to do a cam for the combination you finally settle on. Sell your $400 cam on ebay to someone who believes in reverse splits for LS1 engines. You should be able to get a c-note for it.
You won't find the right cam guys posting here, BTW. The have either been banned or exited stage left of their own accord. More's the pity for the folks still here.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
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
Thats right!!! All of the good cam "desginers" are long gone... NOBODY on this board knows how to spec a camshaft to meet your goals... I suggest you hi tail it over to Ed Curtis' web site immediately so he can pick up his Borrowed Comp Catalog and " Design" your optimal camshaft............
VIPERBLUELX, I would go ahead and get a ported FAST on that motor STAT. I know less than some of these guys have forgotten but I have experience with a similar combo. My cam only (TR230---no good RS type) on an a stock LS6 longblock, in a 3400lb+ TA M6 running high tens at 127+ consistently w/440rwhp/415rwtq. My setup seems to like the FAST90/NW combo. In fact I'm waiting for a sponsor to get back to me on a ported 92mm intake
I guess I should nix that idea judging by the experts opinions. IMO, go for it. If it doesn't work out just re-sell it. BTW, really nice gains from your ported heads. I wasn't even entertaining the idea of having my 243's ported until I saw your results.
Larry
I guess I should nix that idea judging by the experts opinions. IMO, go for it. If it doesn't work out just re-sell it. BTW, really nice gains from your ported heads. I wasn't even entertaining the idea of having my 243's ported until I saw your results.Larry
Well, as said above, a cam change will definitely be the way to go if you are indeed going with a 100+shot of Nitrous. You would definitely want something with more duration on the exhaust side. Ask Patrick G to spec you a custom cam.
TECH Fanatic
Joined: Jun 2002
Posts: 1,979
Likes: 3
From: Upstate NY
Thats right!!! All of the good cam "desginers" are long gone... NOBODY on this board knows how to spec a camshaft to meet your goals... I suggest you hi tail it over to Ed Curtis' web site immediately so he can pick up his Borrowed Comp Catalog and " Design" your optimal camshaft............
Ron, what are your technical views on the OP's Reverse Split cam for his application?
Thats right!!! All of the good cam "desginers" are long gone... NOBODY on this board knows how to spec a camshaft to meet your goals... I suggest you hi tail it over to Ed Curtis' web site immediately so he can pick up his Borrowed Comp Catalog and " Design" your optimal camshaft............
I have never personally seen a reverse split work in an LS engine. I would never suggest a reverse split to anyone with an LS engine, more importantly to someone wanting to add nitrous. I have already discussed cam options with the OP and told him to get the X1 out of his engine.
I have my own thoughts on all of these "custom cam" designers as of late, but Ill keep that to myself
TECH Fanatic
Joined: Jun 2002
Posts: 1,979
Likes: 3
From: Upstate NY
No link, sorry.
I have never personally seen a reverse split work in an LS engine. I would never suggest a reverse split to anyone with an LS engine, more importantly to someone wanting to add nitrous. I have already discussed cam options with the OP and told him to get the X1 out of his engine.
I have my own thoughts on all of these "custom cam" designers as of late, but Ill keep that to myself
I have never personally seen a reverse split work in an LS engine. I would never suggest a reverse split to anyone with an LS engine, more importantly to someone wanting to add nitrous. I have already discussed cam options with the OP and told him to get the X1 out of his engine.
I have my own thoughts on all of these "custom cam" designers as of late, but Ill keep that to myself
I found EC without a link. Thanks anyway.
Your thoughts on "custom cam" designers would be interesting to many, I'm sure. They probably don't all use XE-R and/or Xtreme RPM Hi lift lobes, but some might. Some don't say, some do.
Jon
i read somewhere a ls1 intake flows around 250 , ls6 260 and a Fast unported flows around or above 270 . so if you got heads that flow more the intake restricts the cfm for the heads . not sure what a becks or sheet metal intake manifold but they are up there . itbs would flow well also but then you are really getting up in price .
