is the FAST intake worth it?
FAST 78mm - not worth it over an LS6
FAST 90mm - if you are on stock cubes and heads, then stick with the LS6...the only time you should consider a FAST90 on a stock cube motor is if you have ported heads.
FAST 90mm - if you are on stock cubes and heads, then stick with the LS6...the only time you should consider a FAST90 on a stock cube motor is if you have ported heads.
Originally Posted by iamsickofitall
FAST 78mm - not worth it over an LS6
FAST 90mm - if you are on stock cubes and heads, then stick with the LS6...the only time you should consider a FAST90 on a stock cube motor is if you have ported heads.
FAST 90mm - if you are on stock cubes and heads, then stick with the LS6...the only time you should consider a FAST90 on a stock cube motor is if you have ported heads.
Originally Posted by 1slow98Z28
just wondering if i would be worth it to get the Fast intake or would i be alright with the SLP Ls6 intake??
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by 1slow98Z28
just wondering if i would be worth it to get the Fast intake or would i be alright with the SLP Ls6 intake??
The FAST 78mm works in the same manor and on the correct setup will out perform the Ls6.
Having said all that though the LS6 intake is very good and many people have produced very good numbers with it.
There was a large test of heads/intakes a couple of months back and the conclusion was that a budget set of heads with a FAST 90 would match or exceed the same cam using top of the line heads and a LS6 intake.
Typically in a cammed or h/c LS1 the FAST 90 should be making about 20rwhp more PEAK HP over the Ls6, although the under the curve performance will be pretty even upto around 5000rpm.
Trending Topics
I would get a nick williams TB and get a ls2 manifold ported. It is not as good as the fast but better than the ls6. I have a guy down here that does it at a very reasonable cost.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
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!
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by black01_WS6
I would get a nick williams TB and get a ls2 manifold ported. It is not as good as the fast but better than the ls6. I have a guy down here that does it at a very reasonable cost.
Originally Posted by 300bhp/ton
ummm I wouldn't minnd seeing proof of the LS2 intake outperforming the LS6 on a 346ci motor.
Originally Posted by ShevrolayZ28
I think I remember reading about a heads up comparison and the LS6 actually performed better than the LS2.
yes you are right there were a couple comparisons and each time the ls6 performed better than the ls2. The ls2 aint worth **** unless ported.
TECH Enthusiast
Joined: May 2006
Posts: 644
Likes: 0
From: south jersey
ls2 still an improvement over the ls1 though if i remeber right ... i cant beleive the prices on these parts..... i can get an aluminum intake manifold for my 1st gen small block for 100$brand new , but i cant get the best Plastic?! one for under 800 seems like a whole stinky situation to me. i think it would of been cheaper to steal the engine out of my 84 , then to keep going with my ls1. performance vs =performance.
Originally Posted by 300bhp/ton
ummm I wouldn't minnd seeing proof of the LS2 intake outperforming the LS6 on a 346ci motor.
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by 98camaroLS1M6
fast will kill low-end torque on a stock cube engine, stick with an ls6 intake unless you are a 6speed car going for the cam only record 
From what I've seen it will match and exceed a LS6 from tickover upto about 4500-5000rpm where it will produce significantly more. Never seen it loosing out at any rpm range. Plus a ported FAST works even better in the low rpms than a stock one.
I will admit, that to see the most of the FAST intake you do need to be looking at the 5000-7000rpm area, so a good cammed or h/c car with raised rpm limiters is the way to go. - IMO
Here is the comparison of all the intakes on the sam motor with a good size
cam (.605 ish lift and mid 230's duration)
http://www.tpis.com/plog/index.php?o...Id=14&blogId=1
cam (.605 ish lift and mid 230's duration)
http://www.tpis.com/plog/index.php?o...Id=14&blogId=1
