firefighter813x

iTrader: (6)

How many of ya are running the 90/90 or new 92/92 cam only? I'm thinking of buying one for my 346 all bolt on MTI X1 cam only setup. List setups, and how much power you're making! Thanks-

I wanted heads, but the intake would be a lot easier to install!

Michael02hawk

iTrader: (26)

Most feel the 90/90 or 92/92 setup is too much for 346 cubes. In most cases gain is nothing or can even hurt performance.

IMO, the LS6 intake would be your best choice. Its affordable and proven on 346 cube engines - which I see your already using.

teke184

iTrader: (5)

i'm in the EXACT same boat as you.

i want to "do something" to my car...i've been itching to...but i don't have the funds to do head correctly (new injectors, bolts, retune, misc), not to mention i'd like to do better than budget heads.

i've been throwing around the FAST...since you can pick em up for $1200 or less (used much less).

and the swap is straight forward and doable in a short time (working in my apartment parking lot).

i don't think you'll see the gains some guys get, but it should be considerable.

would love to see a before/after dyno run.

DirtyJohn

iTrader: (8)

I put down 384/346 with a 224/228 cam.
Dyno and mod list in sig.

Also, I prob should be pulling more than that cause I'm tuning it myself and I can't say I'm exactly a professional grade tuner. I like to think I could get 390/350 or so, but thats speculation.

95GreenZ28

iTrader: (70)

I would install a 90/90 setup with a good set of heads. That is what I am waiting on so I can do it all at once

tylerdj

iTrader: (31)

I would do an LS6 intake and get some heads!

kyles2000z

iTrader: (8)

for the price of a 90/90, you can get a good set of heads and make WAY more power than what a 90/90 would yelid on a stock headed, stock cubed motor. save the 90/90 for more cubes.

STRIPSTAR

iTrader: (4)

Yeah, if you have a ls6 intake already then do heads. Buy some head gaskets or ARP bolts if you have money burning your pocket.

98camaroLS1M6

iTrader: (35)

the 92/92 will only be worth about 15rwhp/10rwhp over an ls6 intake. If you want more bang for your buck get heads.

SOMbitch

iTrader: (8)

I have seen ported 90/90 combos do much better than this on agressive set-ups you just have to spin higher to really take FULL advantage of a 90/90. If your not spinning 6500+ I don't think the FAST is worth the extra $$ over an LS6.

Dragkid1917

iTrader: (2)

They just had a back to back dyno on a bolton ls6 vette and the ported 92 swap yeilded 28rwhp and 27rwtq more. It might not be entirley worth it to swap from ls6 to fast, but its definatly worth it to me to swap from an LS1 intake to a ported 92/92 combo.

tylerdj

iTrader: (31)

Have a link?

firefighter813x

iTrader: (6)

I figured I could sell my red painted LS6 intake for 325 or so, then put that money towards the 90/90 combo. That's why I was asking. Thanks for the responses

95GreenZ28

iTrader: (70)

Yea get you a set of stage 2 heads Much better gains

teke184

iTrader: (5)

better gains, but you're still tallking more money, and a significant increase in labor needed to do the swap.

whether it be "paid labor" which will add to the cost, or "required knowledge to DIY"...a head swap is considerably more than an intake swap.

the other side of it is if you're already running the cam...and it's tuned....you'll hve to pay $500 for another tune after heads. not to mention the cost of the install parts.

most heads will require new injectors...$250-300
head bolts - $50
head gaskets - $50-100
dyno tune - $300-500

so you're looking at almost $1000 worth of misc expendatures on top of the heads. so even if you do budget heads (which tend to yield budget hp) you're still pushing the $2000 mark, and getting maybe 30-40hp.

where a FAST intake costs $1100 (TR has a package i think) and you'll gain 15-20hp.
and if you have an LS6 intake already...you'll recoup $300-400 by selling that and the TB.
and the FAST is something a guy can install in his driveway in an afternoon.

Dragkid1917

iTrader: (2)

https://ls1tech.com/forums/dynamometer-results-comparisons/895368-fast-92mm-results-i-wouldnt-believe-myself-if-i-didnt-see-first-hand.html

And btw they dont make 90/90's anymore its all 92/92 now.

Detoxx03

iTrader: (14)

I was making 386rwhp and 366rwtq cam only and switched to the fast 92 combo and went to 418rwhp and 386rwtq so I would say its not a waste and with heads you can easily get ove 450rwhp

heymoej

iTrader: (67)

cool you got 32 more rwhp with the 92/92!

i have the tsp heads cam package & dynoed 406 on a mustang dyno & i just ordered my fast 92/92 i would be happy with 32 more hp,hell i might get more since you dont have heads!

Detoxx03

iTrader: (14)

Exactly my thoughts. Mine it ported btw. I am more than satisfied with it but now i'm ready for heads

INMY01TA

iTrader: (1)

Cam only here with a 90/90. Made 401rwhp on a conservitive Mustang dyno. I personally know several cam only guys that use 90/90. If the cam is big enough it'll help.