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fast90 or 78 mm????? please help

Old Apr 14, 2007 | 05:15 PM
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Default fast90 or 78 mm????? please help

ok i got screwed on the used intake i bought. so now my problem is

should i go to the 90mm fast or the 78mm.

I am just worried that being i spray it.On a 346 CI the 90mm won't have the velocity to carry the wet shot. so what is the right choice here????

tr224/114 cam,afr205's 59cc,lt's ,full custom exh.

any input would be great. this is makeing me nuts

78 or 90

what do ya think
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Old Apr 14, 2007 | 05:21 PM
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90/90 set up is hard to beat, it make good power and produces good results with those afr 205's you have. i have used 78 stuff on a all motor 346, and a s/c 383 and don't have any complaints. either one will make a good difference for you.
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Old Apr 14, 2007 | 05:24 PM
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The runners are the same between the intakes. Only the mouth of the intake is larger on the 90.
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Old Apr 14, 2007 | 05:31 PM
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so if i buy the 78 now i can buy just the top plate later and go to a 90 mm tb

if i am right that is sweet
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Old Apr 14, 2007 | 05:33 PM
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Just but the 90/90 now and send it out for porting at AFR is you have the extra $$.
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Old Apr 14, 2007 | 06:51 PM
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Originally Posted by brad8266
Just but the 90/90 now and send it out for porting at AFR is you have the extra $$.

do think it is worth it with my cam??????


and how do i do it just pm tony and send it to afr??
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Old Apr 14, 2007 | 06:58 PM
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I'd do the 90/90. If your going to spend that much money on a intake and tb you might as well get the biggest.
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Old Apr 14, 2007 | 07:04 PM
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Originally Posted by quick346
do think it is worth it with my cam??????


and how do i do it just pm tony and send it to afr??
The porting of the fast is worth it especialy since Tonys porting will pick up good power on the low end. Just pm Tony and he will square you away.
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Old Apr 15, 2007 | 09:08 AM
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I have a Mamo ported FAST waiting installation, of course for the next FIVE friggen days we are going to have a major storm
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Old Apr 15, 2007 | 10:14 AM
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I'm watching that storm on radar. Looks real bad as they are forcasting 4 inches of rain in NY. Supposed to be the worst storm in 14 years for Londg Island. Get your ride up on blocks and hunker down. Where exactly are you? Good luck.
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Old Apr 15, 2007 | 10:58 AM
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lol dude u need to do the fast 90/90 i was puttin down 440rwhp 408rwtq WITHOUT heads cam only...i got 34rwhp from it alone on mustang dyno. WOW!!
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Old Apr 15, 2007 | 11:32 AM
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Originally Posted by 1bigcamdls6
lol dude u need to do the fast 90/90 i was puttin down 440rwhp 408rwtq WITHOUT heads cam only...i got 34rwhp from it alone on mustang dyno. WOW!!
Theres something missing here. You dont pick up 34rwhp from a fast 90 on a 224 cam without heads.
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Old Apr 15, 2007 | 11:41 AM
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If that's the case, then I should be hoping for 480rwhp this year instead of the 440-450 I'm looking for
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