305 compared to a 350
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Joined: Jul 2005
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From: Indiana
Car: 87 trans am
Engine: 350 TPI bored .040 over
Transmission: modified 700r4
Axle/Gears: stock spline, 3.73 Eaton posi
305 compared to a 350
I havent been able to find a website on the facts that im looking for, but i was wanting to know on the tpi 305, is the intake manifold the same as the tpi 350 intake or not. if they are the same, what is the difference between them besides the bore, heads,and stuff like that, i want to know what is the difference is like from the intake manifold up, the only thing i can think of that would be different would be the size of the throttle body, and by the way does anybody know what the stock size of the throttle body butterflies are on the tpi 305 and the 350, i cant find them either, thanks
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From: Glendale, AZ
Car: 4 Mopars total
Engine: Pentastar power
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Axle/Gears: Three 8 3/4's & one 9 1/4
Only other difference being the injectors. 19lb/hr on the 305 and 22lb/hr on the 350.
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From: Elgin, IL
Car: 1997 Corvette
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Forgot about injectors even being there :P Yes, the injectors are different as mentioned above. Those numbers are correct. 
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Correct guys. The throttle bodies are the same, both twin 48mm(approx. 780 cfm) the only difference is the injectors(19's on the 305, 22's on the 350. Not a big deal on a MASS car. I've run the 19's on several set-ups(including a current 355 vortec head approx. 375hp). Any more power than that I'd deff. go bigger. The only reason I haven't on it is becasue its in a 4x4 Tahoe thats a daily driver and I'm looking for 20-21 mpg...
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