Alright I'm wondering what the difference between a 305TPI and a 350TPI is. This is just for the manifold. I think they are both the same except for the injectors and fuel rail or maybe even just the injectors. Am I right?

This other guy said the 305 had smaller ports and everything on the manifold.

 

All of the manifold parts are the same except the injectors.

305/5.0 = 19 lbs/hr injectors
350/5.7 = 22 lbs/hr injectors

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Tracy /AKA IROCKZ4me
'86 IROC-Z Camaro
"Cogito ergo zoom"

• 355 cid
• AFR heads
• Arizona Speed & Marine hydraulic roller cam w/ AFR hydra-rev kit
• modified SLP runners
• TRW forged pistons/ceramic coated
• fully balanced
• Edelbrock headers/ceramic coated
• SLP cat-back
• Paxton supercharger
• Nitrous Express nitrous oxide

My IROC-Z
EFI Performance Club on Yahoo
Club IROC-Z

 

I thought so!
Thanks

 

Might have a diferent fuel pressure regulator. Seems the 350 would need higher pressure- then again it has bigger injectors.
Just ignore me.

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'88 RS (originally 2.8)
New 350, .040 over, ported vette L98s, ported stock tpi.
Old 305 injectors & chip
TES headers, 3.73 gears, 700r4.
Best with 2.8-17.4@77mph
Best with 305-15.0@93mph
Best with 356-13.7@101mph
(Damn the 2.8!)