I heard that GM used the same intake for the 305TPI and the 350...is this true?

 

yes it is. They are the exact same. Only difference is injector size, 19lb/hr on 305s, 22lb/hr on 350s.

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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter

Built on Wednesday

 

MrJ is right! However, be aware that GM changed the intake in '88 due to the removal of the 9th (cold start) injector!! So if you have a pre-1988 TPI setup, you don't want to put a 1988 or older intake on there!!

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1986 Trans AM
305 TPI
4 Wheel Discs
9 bolt Borg Warner Rear
Completely Stock
Soon to upgrade to a 383 stroker w/TPI, Hedman Shorty Headers, 64cc Pocket Ported Worlds Product Sportsman-II heads, ported intake, comp cam, TPIS air foil, Adjustable Fuel Pressure Regulator, and 24 lb/hr SVO injectors!
Current project: Keeping my car running until I get the money for the above mentioned project! :-)

 

Actually it was in 89 the cold start disappeared...
And the 85-86 have the old style bolt pattern, while the 87-up have the newer style, in short the 4 center bolts are at a different angle. Minor problem, easy correction with a drill.

 

yep don't worry about the year, just drill as necessary and plug the coldstart hole.
The coldstart injector didn't really help anyway.