[tom s]

I do have a pair of custom Tom Vaught 660s with double hump arms on my 2-4 303 RA V Xram intake.The motor really did not like them on the dyno as too much too soon.We cant run any vac sec or double pumpers on the intake.Next time we are trying a set of 450 CFM man sec holleys.REALLY would like to get it driveable for my T/A.Tom

[suprchikn]

Tom I had the same problem of too much too soon. First I reworked the primary metering blocks from 2 600s (w/ power valves) to matching air and fuel circuits and jetted downto 65 jets. then i ground the hump in the throttle arm to delay the secondaries somewhat. Lastly I replaced single hole pump cams with double hole cam of same profile (From double pumper 50 cc pump) in upside down position , or standard position on dp carbs. Oh and screw in high speed air bleeds on primaries helped too. All of this made it very very streetable. I drive the car as often as possible. Ray

[tom s]

remember my motor is only 390CI with ports that really dont come on strong untill 4000RPMs!We started the dyno pulls at 3000,next time we will start them at 4000 so we dont bog the motor.If AFBs would work on the Xram,I would use them in a heartbeat.Tom

[suprchikn]

modified 660's on wentler t ram.

[suprchikn]

Tom I understand entirely, my cam is still sound asleep at 3000 rpm, but when it wakes up it has a very bad attitude. I also locked the timing at 34 and by adding 2" headers and 3.5" exhaust was able to idle down from 1200 to 900 before touching mixture screws. BTW at this point I can cruise around in 5th (OD) at 1200 or 1500 rpms and roll into the gas without a bog. That took a lot of work. But I wish I had your challenge. I've seen two RA Vs though. ok so one was a bare 303 block and rods. Maybe someday. Ray

[R 70 Judge]

Originally Posted by suprchikn

modified 660's on wentler t ram.

Cool set up.

I will be running a similar set up on my '63 Le Mans when it's done. My intake still has 2 Ron's flying toilets on it (alcohol injection). I plan on changing to carburetors since I don't want to run alcohol on the street.

I still can't decided if I'm going with Holley's or AFB's.

Can you give us some more info on your combination?

[tom s]

if you want it to "look" anything nostalgia go the AFBs and the correct aircleaners.JMO,Tom

[Big Chief 541]

who has the original AFB's and air cleaners for sale? I'm using an offy high rise intake with modern AFB's and aftermarket air cleaners.

[OLDFLM72]

I've often thought of running the Edelbrock 2x4 intake under the hood of my Formula for something different but have already read that a single 4 is faster?

V/R,
Ty