Chip for 85 305 TPI on carb 350

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If this is a repeat, sorry all.

>Supposedly, the old 305 and new 350 both had heads with the same size
>chambers.  I don't know which heads ended up in the car. 

Maybe different sized vales thou

 If Chilton's
>is to be believed, this engine now has a CR of 8.2:1, compared to 9.0
>for a 350 TPI and 9.5 for a 305 TPI.  Could someone who has a head for
>Chevy heads confirm this?

8:1 and a stock cam, don't really expect much, 
>
>Presumably, this 350 block has a wimpier cam than a TPI would normally
>have.
>
>Are 305 and 350 TPI injectors the same, or does the 350 use a higher
>flow rate?

I think 305 are 19, and 350 23.
>
>What should be changed to deal with the lower CR?  Advance the timing?

Advancing timing will help it feel good, to srive, but nit add much power, 
compared to having a 9.5: motor.

Get some 1.6:1 stamped steel rockers, that'll help some.
Bruce
>
>I'm sure that some of this is answered in the list archive, which is my
>next stop.
>
>-- 
>Ludis Langens                               ludis (at) cruzers (dot) com
>Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
>