Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Welcome to ThirdGen.org!
Welcome to ThirdGen.org.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!
hey im about to get a new carb for my 84 305 its got a eldelbrock eps intake on it and im wonderin whether i should get a holley 600cfm or road demon jr. 525cfm or 625cfm. what do u think please help me
__________________ its not the size of the engine in the race, its the size of the race in the engine. :The Import Code aka stupid
If you're using the stock cam in the engine, a 525 Road Demon should work really well. It will give you better throttle response, acceleration, and drivabilty than a larger carburetor would.
Originally posted by Tech @ BG If you're using the stock cam in the engine, a 525 Road Demon should work really well. It will give you better throttle response, acceleration, and drivabilty than a larger carburetor would.
Originally posted by 1984z28master so do u think a 525cfm road demon jr. manual chock would be good im puttin on and edlebrock performer intake. what u think about that combo?
I just have to ask, why the intake swap?
Are you going to get the performer RPM or the basic performer?
I would never go mechanical choke, but thats just me. I dont like screwing with that, its just not worth it. The electric choke or the conversion is your friend. My holley carb 305 starts everytime on the first crank. It starts way better then any new FI engine. I did the electrical choke conversion and will never regret it.
As for carb i'd go 625 so you will be ready for some upgrades later on.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
The performer is supposedly a step down from the EPS, I couldn't say for sure whether there'd be any noticable difference between the two if you're using a stock cam, but if I had a choice between the two, I'd stick with the EPS.
where can i get a converison from manual to electric, and i was goin to go with the eps but this was just such a good deal. how many horespower should a these to give me the 525 road demon jr. and edelbrock performer?
I think the Holley 600 would do just as well if not better than a Demon 525 myself.
But I guess I'm a little biased since I bought what turned out to be "too small" of a Demon carb on my car right now that was "recommended" by a BG/Demon tech rep.....but not the same one posting here...need to make that clear.
And that was after I gave them every spec on my engine they asked for.
Think about it this way - the stock Q-Jet that came on the LG4's flow greater than 700 CFM's so why would you go even smaller than that? Just for better velocity at lower RPM's?? Yeah maybe, but it's not gonna flow as well as the Q-jet up top...
