Are Bosch and Holley injectors physically the same size? [Archive] - Chevelle Tech

: Are Bosch and Holley injectors physically the same size?


BlownYenko
May 1st, 11, 8:42 PM
If I run 8 Holley injectors and 8 Bosch injectors, do they both physically fit into the same fuel rails / injector bungs or are they a different shape?

This is something that I thought would have taken me 2 seconds to Google, but I couldn't find an answer...

The reason I ask is that I'll need to run a set of 95lb Holley injectors (which I have already), with some larger ones to kick in as boost levels rise. I'm leaning towards the Bosch 160lb as a compromise between quality and price, but I want to be sure they'll fit the same.

Thanks,

Craig

64duece
May 2nd, 11, 7:15 PM
Yes Craig....they are both standard EV1 which are the same dimension and use the same connector aswell.

BlownYenko
May 3rd, 11, 5:52 AM
Thanks Dennis - that'll save me some grief down the track. :thumbsup:

Doug F.
May 3rd, 11, 9:00 AM
How much boost and base pressure are you going to run?

BlownYenko
May 3rd, 11, 9:18 AM
Here's the proposed combination:
565 cube with a gear driven F3 139 Procharger.
Geared for approximately 20lb boost.
45lb base fuel pressure
Belt driven fuel pump

It's a street car, so I'm planning to run the 95lb injectors for most of the time. I've been really happy with the way the Holley injectors have allowed my previous YS Vortech engine to idle cleanly, so I have no concern about them being too big for the street. It only made 870hp, so there was no need for extra injectors with that one.

I'm guessing somewhere from 1400hp to 1700hp with the new combination (after the frictional losses of spinning the big F3 blower), so I'm hoping 95 & 160lb per cylinder will suffice.