4360 1957 Fuel Injection

[Bruce B.]

Early 4360 units have white buttons on the nozzle blocks, can someone tell me when they stopped using the white dots?
Was the dual spider used on all 4360 units?
Thanks in advance.

[Mike M.]

Re: 4360 1957 Fuel Injection

4360 serial # 69 has the white plugs on the nozzle blocks. far as i know, all the 4360's were dual spiders.I'm just gettin ready to install an anti-siphoning device on my 4360. BTW, as an early 4360, serial # 69 lacks the familiar Rochesster ID tag on the plenum. its serail # is hand stamped on the back wall of the doghouse/plenum. mike

[Bruce B.]

Re: 4360 1957 Fuel Injection

Early 4360 units have white buttons on the nozzle blocks, can someone tell me when they stopped using the white dots?
Was the dual spider used on all 4360 units?
Thanks in advance.

Mike,
My unit is 136 and has the white nozzle blocks and it has both the stamp on the back of the plenum and the Rochester tag. At some point the spider has been replaced with the single spider. I will also install the anti siphon valve prior to assembly.
Have you seen the anti siphon valve that Bob Williams sells (Corvette Enthusiast mag April 08)? How does it work?
Bruce B.

[Mike M.]

Re: 4360 1957 Fuel Injection

i plan on installing a pair of the anti-siphoning solenoids on my 4360 as soon as the parts arrive. remind me in a couple weeks how the plumbing job went. the solenoids have to be way smaller than that what we use on the single spider Rochesters.mike

[Joseph T.]

Re: 4360 1957 Fuel Injection

Mike,
My unit is 136 and has the white nozzle blocks and it has both the stamp on the back of the plenum and the Rochester tag. At some point the spider has been replaced with the single spider. I will also install the anti siphon valve prior to assembly.
Have you seen the anti siphon valve that Bob Williams sells (Corvette Enthusiast mag April 08)? How does it work?
Bruce B.

Bruce..is your Plenum stamped 136 in the normal RPD tag location or is it stamped 136 on the front or back of the plenum? If my memory serves me the hand stamped number on the front of the very early plenums was the sequence # of the early Plenums but not the total unit assembly # as different # plenums, air meters and fuel meters were mixed to achieve the best possible running unit. These units being hand built...at Rochestor.

I have complete and unrestored 4360 unit #132 which is technically assembled unit #32 prior to the new RPD tag series that started with 1001. The first non tag units starting with #101..

# 132 is hand stamped on the side of the Plenum and has white dot nozzle blocks and dual spider.

I have another complete unrestored 4360..I think #1507 ( I would have to check ) and as I remember it is a single spider and I'm not sure about the nozzle blocks..but I think they are all black.

If important I can check.

Joe

[Joseph T.]

Re: 4360 1957 Fuel Injection

4360 serial # 69 has the white plugs on the nozzle blocks. far as i know, all the 4360's were dual spiders.I'm just gettin ready to install an anti-siphoning device on my 4360. BTW, as an early 4360, serial # 69 lacks the familiar Rochesster ID tag on the plenum. its serail # is hand stamped on the back wall of the doghouse/plenum. mike

Mike..I think a changeover to single spider took place before the end of production on the 4360 units.

Is your #69 unit...hand stamped 69 or 169 or 1069 in the upper left hand corner of the plenum where the more normal RPD tag would be? It sounds like waht you have is Plenum #69. Very cool.

I beleive the first very early units started hand stamped with #1 assembled unit being hand stamped #101 and when the RPD tag was put in use..the first serial number was 1001.

I beleive Kayser has #101 which was originally on the 1957 Super Sport show car.

An interesting mostly unknown item on these early 4360 units was a special direct 12 volt line from the drivers side wiring loom to the choke base. Mine is still in place.

I claim no expertise.

Joe

[Joseph T.]

Re: 4360 1957 Fuel Injection

4360 serial # 69 has the white plugs on the nozzle blocks. far as i know, all the 4360's were dual spiders.I'm just gettin ready to install an anti-siphoning device on my 4360. BTW, as an early 4360, serial # 69 lacks the familiar Rochesster ID tag on the plenum. its serail # is hand stamped on the back wall of the doghouse/plenum. mike

Mike..I rechecked the #132 4360 unit and the number stamped on the front of the Plenum is 1042. Air meter 1035 and fuel Meter 132.

I beleive the fuel meter # was the control # for the total FI assembly. Which can probably be verified in Kaysers recently published History of Rochestor Fuel Injection.

I am going from memory.

Joe

[Bob J.]

Re: 4360 1957 Fuel Injection

An 8-way fuel distributor went into production effective with fuel meter Serial# 1522C replacing the two 4-way distributors.Bob Jorjorian

[Mike G.]

Re: 4360 1957 Fuel Injection

my 4360 fi unit is serial number 1105 and it is a single spider unit. i have nos blocks on mine and they do not have the dots.

[Joseph T.]

Re: 4360 1957 Fuel Injection

my 4360 fi unit is serial number 1105 and it is a single spider unit. i have nos blocks on mine and they do not have the dots.

Mike...was your 4360 unit fully restored? I don't know if one could even find white dot nozzle blocks if they wanted them...or are they repoed? Sounds like your unit is the 105th unit after they started using the RPD tag.

I would guess that would make it about a Dec.56 or Jan.57 unit. Does that sound right.

Joe

[Mike G.]

Re: 4360 1957 Fuel Injection

it is a late dec unit. jack podell fully restored the unit. he would be the guy to answer the white dot question and he would be the guy that would have them. he also rebuilt the matching 889 distributor.

[Bruce B.]

Re: 4360 1957 Fuel Injection

Bruce..is your Plenum stamped 136 in the normal RPD tag location or is it stamped 136 on the front or back of the plenum? If my memory serves me the hand stamped number on the front of the very early plenums was the sequence # of the early Plenums but not the total unit assembly # as different # plenums, air meters and fuel meters were mixed to achieve the best possible running unit. These units being hand built...at Rochestor.

I have complete and unrestored 4360 unit #132 which is technically assembled unit #32 prior to the new RPD tag series that started with 1001. The first non tag units starting with #101..

# 132 is hand stamped on the side of the Plenum and has white dot nozzle blocks and dual spider.

I have another complete unrestored 4360..I think #1507 ( I would have to check ) and as I remember it is a single spider and I'm not sure about the nozzle blocks..but I think they are all black.

If important I can check.

Joe

Joe, my unit 136 (1136) has the number stamped on the back of the plenum and the RPD tag in the normal spot on the side. Ken Kayser thinks that it had both numbers since RPD was making the change to the tag. It is shown in his book on page 474. It also has the nozzle blocks with the white dots.
I just ordered a anti-siphon device from John D. as I believe it is essential especially if the car will be driven as it will be.
The 57 is #809 250 HP Powerglide all red.
Thanks to everyone for thier input.
Bruce B

[Larry L.]

Re: 4360 1957 Fuel Injection

What ever you do get an anti siphoning kit from John Degregory.

I have a nice bent rod setting on my file cabnet from my 57 BelAir 2 door hard top.
After I bent the rod - I put the FI unit out the next week for the trash.
Sorry I did that. Back then I bought a new short block and replaced the engine but kept the rod as keep sake.
I will post a picture of it for you all to see. I hate it when this stuff happens.

[Mike M.]

Re: 4360 1957 Fuel Injection

joe: my 4360 stampings are as follows: Plenum stamped 1069 on Rear wall of doghouse. Air meter stamped 1072. Fuel meter stamped either 1064 or 1084. the third digit in the fuel meter appears to be an over stamping and i can't tell if third # is a 3 0r 8.mike

[Bruce B.]

Re: 4360 1957 Fuel Injection

Larry, I ordered a anti siphon kit from John D. today.
I also put one on a 4800 unit I have.
Thanks for the good advice.
Bruce B.