Ed 500 tunnel ram carbs

[Falcon67]

I cross posted on racingfuelsystems, but no posts on the Ed form for the last 3 years so thought I'd ask here.

Friend has a 32 with a 331 hemi in it, low profile dual carb intake and it came with two 1404  500cfm units.  He could not get the car to do anything but stumble on throttle roll in, and the car (rode in it) doesn't pull very hard.  I took a pair of 1405 600 units I had tuned for a tunnel ram (+1 rich calibration pri & sec, .033 shooters) and we put those on the car.  Ran like a scalded ape.  I want my carbs back, so I told him I'd work on the 500s.  Have not checked to see how they are set but I know they tend to run lean since Ed specs them for their dual quad applications.  I'm thinking I'd do the same with these as the 600s  - set them +1 rich on both ends, drill the .028 shooters to .033 and verify proper pump operation/replace the diaphrams with #1470 parts and test each on my door car.  Any comments or suggestions welcome.  LOL, the alternative is to buy a couple of 1405s off eBay, clean a set up like the other 600s and trade for $ and the 500s. 

[Barry_R]

I ran a pair of those Edelbrock 500s on the dyno on the Edelbrock 2x4 intake.
Absolutely the worst carbs I ever tried to tune.
Best thing you could do for society as a whole is to bury them deep and pour a 6" slab on concrete on top.

[jayb]

LOL!  C'mon Barry, tell us what you really think 

[Falcon67]

I ran a pair of those Edelbrock 500s on the dyno on the Edelbrock 2x4 intake.
Absolutely the worst carbs I ever tried to tune.
Best thing you could do for society as a whole is to bury them deep and pour a 6" slab on concrete on top.

This is the kind of info I live for.   

Exactly why I used the 1405/600 cfm units on the 302 - they worked with minimal fiddling.  And they worked on my friend's car - he came back from a test drive with a huge grin.  And offered to buy the carbs.  I told him I'd think about it - one of those 600s is the one I bought in Houston from Super Shops in the early 90s, so it's kind of a keepsake. I think I can get the 500s to work well enough on his lazy hemi by using the fatten up route, more pump shot and better accel pumps - the pump assembly in the first one I opened really didn't seal to the bore very well.  Did not look like an Ed unit.  That hemi is a loafer and for some reason has pretty low vacuum - like 8~10.  And not because it has a hot cam.  There's a strong indication that whoever built the motor wasn't especially competent.  There's no info on whats in it, other than it has around 80 PSI cranking pressure. Seems lame to me.  If it was mine I'd have already had the motor in pieces to find out what's wrong with it.  Pretty sure the cam is in there all wrong.

It's a cool looking car though.  First time I'd been in a 32 - apparently, people were shorter back then.  A plastic outhouse has more leg room.

[frnkeore]

It's a cool looking car though.  First time I'd been in a 32 - apparently, people were shorter back then.  A plastic outhouse has more leg room.

'32's weren't built for comfort. This is the one I put my LR in, in '69.

[Falcon67]

That a cool car.  While riding, I was thinking of people that migrated down Route 66 in these cars, looking for a better life in California way back when.  Tough people.

[Falcon67]

Update - no good deed goes unpunished. 

I had enough parts from friend to do one carb.  Drilled out the shooters and put it on my 302 to test.  Good test, good vacuum, pump shot hits quick and hard even in gear.  Several test starts, no problem.  Good to go.  Undid all the fuel hose whoo-hah required to hook that tiny Ed -6 feed to my big return system and put the 650DP back on top.  Go to start the car - $250 Summit PMGR starter died.  Took the starter from the dragster stash and put that on the car so I can go racing this weekend.  Always something.

[machoneman]

 Pretty sure the cam is in there all wrong.

It's a cool looking car though.  First time I'd been in a 32 - apparently, people were shorter back then.  A plastic outhouse has more leg room.

Sounds like the cam here as well. Heck, I'd skip a total teardown if the rest of the engine is o.k. Merely pull the front off and degree the cam and see what happens.

[Falcon67]

> First time I'd been in a 32 - apparently, people were shorter back then.  A plastic outhouse has more leg room.

That was my exact same thought.  I'm 6' plus a little and I like to not got my right leg bent enough to get in the door.  And that was just passenger sitting, not driving LOL.  I think a 737 potty has more space. 

I doubt he'll tear into the engine.  It runs fine as-is, so if the carbs are sorted he'll just leave it as it sits. Now if it was mine, it'd already be on the engine stand to find out what's up.  It's kind of a testament to those Edelbrock/Carter knock-offs that they work as well on that car as they do.