1964 FI Roadster

[Patrick C.]

Re: 1964 FI Roadster

I run a full time A/F readout on my 64 FI road race car. I have noticed that the right side is consistently more lean than the left side exhaust. This is also true on my two street FI Corvettes. I think it has to do with air flow pattern inside air box. One note a typical Dyno setup will have a single air horn to measure air flow that will not mount horizontally so you will need a wide band sensor in the exhaust to run A/F analyst.

i am going to run an AEM A/F and wide band sensor in a bung on the exhaust pipe about 40 inches from the head for the dyno testing. On the right side however. Going to run 110 leaded race gas on the dyno and in the car.

[Dan H.]

Re: 1964 FI Roadster

Be careful with that water pump topic, it is like politics and very emotional and controversial, but consider what is in the TIM&JG first if you are interested in flight judging..........

I've seen pictures of original 64 FI cars with '175' pumps, none with '326' pumps. Personally I think '175' pumps were a production line pump, service replacements were '326' pumps, as they became available in early 65 model run. Think the TIM&JG might need an update. Be careful, EBAY vendors are selling later recast '175 Truck pumps as 'Corvette Pumps'. Real ones are RARE !!!!

[Don H.]

Re: 1964 FI Roadster

Mr. Holstein gets my vote on this one.

[Bob J.]

Re: 1964 FI Roadster

I'm with Dan and Don on the 64 water pump.
If your goal is originality the 175 is correct.
If you just want a ribbon follow the JG.
Bob Jorjorian

[Michael J.]

Re: 1964 FI Roadster

I've seen pictures of original 64 FI cars with '175' pumps, none with '326' pumps. Personally I think '175' pumps were a production line pump, service replacements were '326' pumps, as they became available in early 65 model run. Think the TIM&JG might need an update. Be careful, EBAY vendors are selling later recast '175 Truck pumps as 'Corvette Pumps'. Real ones are RARE !!!!

I have original '64s with the 326, it is in the TIM&JG for a reason.

[Bob J.]

Re: 1964 FI Roadster

I have original '64s with the 326, it is in the TIM&JG for a reason.

How would you explain the print date?

Bob Jorjorian

[Michael J.]

Re: 1964 FI Roadster

Wayyyy too long a discussion that has been had many times before and convinces no one. I'm not going there again.

[John D.]

Re: 1964 FI Roadster

HI Patrick, Gorgeous engine for sure. I did not read all the posts (as usual). Here's what I noticed on the fuel injection. I wish I could have blown up the air meter side bigger so I might be incorrect on washers.
Air meter to Plenum. Has 4 of 5/16 split lock washers. They should be blackened
Choke cover. The 3 of 8-32 x 5/16 slotted fillister screws should be blackened.
Bellcrank to bellcrank stud. The retainer should be blackened.
You identification tag-should be painted of course.
I tell customers to never install the triangle inspection tag on the FI unit untl the car is 100% restored as they bend so easily. So nice to see it's off. I always thought they went on the 12:00 position but do like the 6th edition which I believe says 10:00 or 12:00. Put it on the 10:00 later to keep it from bending. Repro tags typically get a one point hit.
Fuel meter shield is missing but if going on a dyno you don't want it on now anyhow for adjustments.
Hose clamps-The slotted screws-go toward the firewall side. Good luck with the resto. John D

[Dino L.]

Re: 1964 FI Roadster

Not sure if fuelies in 64 had the crayon marks, my 365 had RE in yellow lumber crayon on the head passenger side rear facing the firewall in yellow....similar to the photo of this 65

[Michael J.]

Re: 1964 FI Roadster

Indeed '64s did. Here is a picture of my low mile original '64 L84, as the engine was pulled for the first time to be restored. The "RF" and job sequence number are on the back of the heads. However, much effort is needed to preserve them as the engine is restored and painted, it is shown above in my post #2. My restorer was able to preserve them, so as with much of the car, original marks and such (like outside passenger side footwell and rear bulkhead markings) are all still in place from the factory.

[Patrick C.]

Re: 1964 FI Roadster

HI Patrick, Gorgeous engine for sure. I did not read all the posts (as usual). Here's what I noticed on the fuel injection. I wish I could have blown up the air meter side bigger so I might be incorrect on washers.
Air meter to Plenum. Has 4 of 5/16 split lock washers. They should be blackened
Choke cover. The 3 of 8-32 x 5/16 slotted fillister screws should be blackened.
Bellcrank to bellcrank stud. The retainer should be blackened.
You identification tag-should be painted of course.
I tell customers to never install the triangle inspection tag on the FI unit untl the car is 100% restored as they bend so easily. So nice to see it's off. I always thought they went on the 12:00 position but do like the 6th edition which I believe says 10:00 or 12:00. Put it on the 10:00 later to keep it from bending. Repro tags typically get a one point hit.
Fuel meter shield is missing but if going on a dyno you don't want it on now anyhow for adjustments.
Hose clamps-The slotted screws-go toward the firewall side. Good luck with the resto. John D

Thanks John

You have been a big help with the restoration. Scott Pfuehler restored the fuel injection unit with your support. I have the shield and will install it after we calibrate the fuel injection unit after the dyno run. I plan to order an injection tag in the next week to install later. Will check the blackened components.

Pat

[Patrick C.]

Re: 1964 FI Roadster

Looks really nice, nothing obvious jumps out, but three questions, why didn't you paint the exhaust manifolds engine color, what serial number is your FI unit, and do you have a VIN stamp on the FI unit? Thanks, here is a picture of mine that just went in my '64 tanker.

Michael,

I got your PM. Glad you enjoyed the articles. Just writing part 8. Perhaps you should do the same with your 64? I would certainly be interested. I am getting ready to video the dyno test for our OK-NCRS in the next couple of weeks. How much power do you think it will make? I am guessing about 310 hp on the dyno. We shall see.

Pat

[Michael J.]

Re: 1964 FI Roadster

If I wasn't such a terrible writer, I might consider that, but not sure if any of my chapters would be interested. I am having mine tuned on a chassis dyno, and I will be very disappointed if it is less than 310 HP at the rear wheels. If you are using an engine dyno (which it sounds like you are), I would expect north of 350 HP if your engine gets the best tune on the FI unit and is stock configuration. That's my guess.

[Patrick C.]

Re: 1964 FI Roadster

Michael, we shall see with race gas and lots of advance. My engine builder thinks it will be around 320 to 330hp. He has done a number of FI engines and a lot of corvette small blocks. Im a bit more pessimistic. We plan to run it for 45 minutes before we make any pulls. Stock mechanical 30/30 cam.

[George J.]

Re: 1964 FI Roadster

My '65 made around 330 with the dyno exhaust. 294 with the sidepipes installed. Of course, using different dynos means the numbers cannot be compared.