intake manifolds for stock 346. how big it to big?
09-21-2010, 01:27 PM
#1
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intake manifolds for stock 346. how big it to big? A couple weeks ago I came across a threat where some people were saying the new FAST 102/102 combo is infact to big for the stock LS1/LS6. As my title above states exactly how big is to big for these engines? I know there are a lot of shops who have tried this combo and well know engine builders also so I'm just curious on what all of you have to say and if there are any real numbers to back up the 102/102 is infact worse off than say the 90/90 or the 92/92.
09-21-2010, 02:31 PM
#3
for the money a fast 102 is not worth the gain ,7hp over a used fast 90/92mm intake.you need a ls2 fuel rail for a fast 102 intake.the 102 is really worth the money on the bigger motors ,383-408+.you can find a used fast 90/92mm for $650.
09-21-2010, 03:59 PM
#4
im in the same boat as you, where ive seen its too big, but still benifits.
id say a 90 or 92 works out awesome on these engines. but if the 5.7 has a good set of heads and cam id say the 102 works out great.
not to mention you can run a 92mm TB on the 102. i think i seen somewhere a 6.0 gto picked up 15hp from swapping to the manifold only keeping the stock TB.
we should do some research and crack this thing once and for all...
id say a 90 or 92 works out awesome on these engines. but if the 5.7 has a good set of heads and cam id say the 102 works out great.
not to mention you can run a 92mm TB on the 102. i think i seen somewhere a 6.0 gto picked up 15hp from swapping to the manifold only keeping the stock TB.
we should do some research and crack this thing once and for all...
09-21-2010, 04:52 PM
#5
Honestly for a stock head/shortblock car the LS6 will do everything you need while saving you cash.
If your gonna go bigger cam & aftermarket heads then you'll benefit from the Fast 90 even on stock cubes. If your goin bigger cubes/cam & heads you'll definetly see the gains from the Fast 92 & 102.
But thats just my opinion.
If your gonna go bigger cam & aftermarket heads then you'll benefit from the Fast 90 even on stock cubes. If your goin bigger cubes/cam & heads you'll definetly see the gains from the Fast 92 & 102.
But thats just my opinion.
09-21-2010, 10:51 PM
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So basically the consensus is that for a strictly stock internal LS1/LS6 for the money and power gain either the 90/90 or 92/92 is better off than the 102/102. I knew a lot of people were wondering this also so i appreciate all the answers and insight.
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09-21-2010, 10:57 PM
#8
The 102 is not too big for a stock motor, it will gain over any other FAST and the LS6. The not worth the extra cash comes from people who already have a 90 or 92. The gain from switching isnt worth it. If you can get the 102 for a decent price than go for that, it will only shine the more you do to your LS1
09-22-2010, 07:24 AM
#9
The 102 setup is more of a cost:benefit thing over a 90 setup on a stock cam car. You won't lose anything with the 102, but the gains you'll get over a 90 setup are so minimal it's not worth it unless you plan on going with a decent cam and heads in the future.
09-28-2010, 02:10 AM
#10
alright here it is spelled out; if you have an ls6 then get the 102 combo for a decent price say 700-850, its pricey but like said above in another post, it will shine more and more the more you mod your engine and if you want to build a 402 or 408, then all the better. if you can get a 90/90 or 92 combo 400-600 then do that IF your heart is stuck on having a quote FAST unquote. imo, fast's are a bunch of over priced pieces of plastic that crack when pushed with boost or nitrous back fire. ill stick to aluminum, i have a pro products 96/96 combo which would come out to have a fast 90/90. i admit that the fast intakes out flow any aftermarket intake hands down, but they sacrafice performance for integrity. aluminum will not crack under boost and wont blow out the back if there is a nitrous back fire. yeah they're heavier but for the added strength, i can live with that. but thats imo.
09-28-2010, 04:22 PM
#11
The 102 is not too big for a stock motor, it will gain over any other FAST and the LS6. The not worth the extra cash comes from people who already have a 90 or 92. The gain from switching isnt worth it. If you can get the 102 for a decent price than go for that, it will only shine the more you do to your LS1
anybody ever stop to think why FAST would discontinue the 78/90/92 in favor of the 102 if it was not compatiable (read "too big") for a stock LS1?
bottom line is, the 102 is perfect for all LS engines, from stock to retarted.
09-28-2010, 07:32 PM
#12
102 is only an air blade. It's not a carburator. There is no ill effect from a 102 TB on a 346 only a chance it won't add much over a 90. There is no such thing as to much air, but a big blade needs a good tuner or driveability can be an issue. A 102 will only compliment any future mods.
