Join Date: Apr 2005
Location: Carpentersville, IL
Info needed on a BARRY GRANT "REACTION TIME SERIES - STAGE 3 CARB"
I have an old Holley Carb that I bought from a racer about 10 years ago. The carb was used on a drag car that ran in the "EZ Street Class". It was sold to me because they couldn't use it for some reason in the class that they were running. The carb was worked over by Barry Grant. I called Barry Grant about 8 years ago and asked for information about it. I was told by someone at Barry Grant that "It is an 830cfm carb modified to flow around 1030cfm." They had me read off the hand scribed numbers off the carb body to them which are:
RT - 9380 -S3
D - 630 - 10
So I wrote everything down in my notes...
Well its been a while now and Ive put on around 1800 miles on it in the past 10 years. I want to open it up and clean out the bowls and metering blocks. I would like to pick up a renew kit for it and I don't know which one to buy for it. ALSO, I would like to know what squirters and jets it had out of the box from Barry Grant. So I could always be able to reset the carb back to "factory" and tune from there. For future knowledge and tuning purposes.
Now upon investigation, beyond what I was verbally told. I tried Googling the hand scribed numbers to figure out what it is. This is what I have been able to come up with. But now it contradicts what I was told over the phone...
RT = Reaction Time Series
9380 = Holley 850
S3 = STAGE 3 (Drag Race)
Yesterday, I called Holley Tech Support and tried to see if they can confirm and get me the needed information. All they could tell me was what I already found out, by decoding the hand scribed numbers. They told me that it flows 950cfm. I mentioned what I was told by someone @ Barry Grant (when they were in business) that it flows near 1030cfm, and he said that he had no way of finding that out for me, and that the info was gone. Due to going out of business and being taken by Holley papers were lost and not a lot of info is around. He did tell me the part numbers to buy to renew it. But I would like to know a better figure on flow numbers & jet sizes... Also, why did Barry Grant tell me its a "830cfm bumped up to a 1030cfm" But it is an 850cfm carb body... Im confused?
The carb has the following:
Large Round Annular Boosters
Brown Accelerator Cams front & back
Cam Position #2 in front & Cam Position 1 in rear
50CC Accelerator Pumps
The choke horn was Milled off the carb body
The Carb Body is Polished
If someone knows some more info please let me know...
Thanks in advance...
Last edited by WILD72; Nov 11th, 14 at 2:37 PM.