AFR 210 or 215
Racer
Joined: Oct 2007
Posts: 263
Likes: 7
From: Brownsville Texas
I installed a set of AFR 215v2's. Couldn't be more pleased about the product and performance. Guessing by the SOP dyno - at the very least a good 25 to 30 horses. Also, the LG Motorsports tune helps tremendously.
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
Racer
Joined: Oct 2007
Posts: 263
Likes: 7
From: Brownsville Texas
At 8600 miles, I said - the hell with the warranty and installed the AFR's.
I'm trying to find a dyno place that's not too far from my town.
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Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
Did you able to dyno the afrs?
Melting Slicks
Joined: Dec 2008
Posts: 2,296
Likes: 3
The LS2 intake flows less than the LS6 intake. The power gained from the AFR heads won't be as drastic until you get rid of the stock intake manifold and get a FAST intake - at which point "you will see a 20-25 HP gain with a properly ported FAST 90/90 set-up.....gains in peak TQ usually 15-20 ft/lbs". There's now a FAST 92 and FAST 102 available, I have a FAST 92 since I bought before the 102 was even a thought. Not worth the $600+ I'd have to spend to gain a couple hp, but then again I'm supercharged and if you're buying for the first time, you may as well go with the 102.
Here's what Tony Mamo @ AFR said in a post in 2007:
http://forums.corvetteforum.com/c5-t...ake-383-a.html
Also, are you bone stock? Do you have a cam, headers, exhaust?
Here's what Tony Mamo @ AFR said in a post in 2007:
One of my ported FAST 90's was worth 32 HP over a stock (un-ported) LS2 intake when tested on an SF902 engine dyno with the same TB within 30 minutes of one another, NO other changes....basically the time it took us to swap the intakes on the dyno.
That's an insane gain for a manifold swap....most people are lucky to get that much with a headswap.
BTW, this was a stock 6.0 liter LS2 shortblock and in theory it takes the same airflow to make "X" amount of power. A larger motor is simply capable of moving the same quantity of air at lower RPM's simply due to its displacement advantage. Basically what Im saying is a weak manifold on a small motor will be just as weak on a larger motor (or potentially worse) because the larger engine has a bigger appetite for airflow.
As others have mentioned....save your money for a FAST or dont bother and consider having it properly ported for even stronger gains from the swap.
BTW....had I compared my ported intake versus an LS6/78 mm set-up my guess would have been closer to a 25 HP delta....the LS2 has been proven to make 5-7 HP less than an LS6 out of the box. They do come around a little when ported but will never get close to the gains of a ported FAST (might knock the difference in half).
Hope this helps....
Tony
Edit: To clarify what I said regarding "bone stock short", it did have a street friendly . It wasnt bonestock as in stock cam and stock heads (just the short was untouched) but in fact IMO is more representative of the type of a build you guys would consider (aftermarket heads and cam) when pondering the value of the FAST versus LS2 intake.
That's an insane gain for a manifold swap....most people are lucky to get that much with a headswap.
BTW, this was a stock 6.0 liter LS2 shortblock and in theory it takes the same airflow to make "X" amount of power. A larger motor is simply capable of moving the same quantity of air at lower RPM's simply due to its displacement advantage. Basically what Im saying is a weak manifold on a small motor will be just as weak on a larger motor (or potentially worse) because the larger engine has a bigger appetite for airflow.
As others have mentioned....save your money for a FAST or dont bother and consider having it properly ported for even stronger gains from the swap.
BTW....had I compared my ported intake versus an LS6/78 mm set-up my guess would have been closer to a 25 HP delta....the LS2 has been proven to make 5-7 HP less than an LS6 out of the box. They do come around a little when ported but will never get close to the gains of a ported FAST (might knock the difference in half).
Hope this helps....
Tony
Edit: To clarify what I said regarding "bone stock short", it did have a street friendly . It wasnt bonestock as in stock cam and stock heads (just the short was untouched) but in fact IMO is more representative of the type of a build you guys would consider (aftermarket heads and cam) when pondering the value of the FAST versus LS2 intake.
Also, are you bone stock? Do you have a cam, headers, exhaust?
Melting Slicks
Joined: Dec 2008
Posts: 2,296
Likes: 3
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
Yessir....Sorry for the confusion.
I orignally posted this thread back in april I think looking for any results from the 215s. There was a guy on the thread that had installed them but hadn't dyno'd them yet.
Since I have purchased and installed them and was just curious what kind of numbers he made with the X-E cam compared to my X1 cam.
The thread had been dead for a few months and I was just curious if he had dyno'd his yet.
I orignally posted this thread back in april I think looking for any results from the 215s. There was a guy on the thread that had installed them but hadn't dyno'd them yet.
Since I have purchased and installed them and was just curious what kind of numbers he made with the X-E cam compared to my X1 cam.
The thread had been dead for a few months and I was just curious if he had dyno'd his yet.
