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Hi all!
want to start the long journey of getting some power out of my 75’ l82. So far have started small with a full exhaust system with long tube headers and high flow flowmasster mufflers. Have also done quite a few cooling system modifications just so that I don’t need to worry about them later on. With that being said any recommendations for a good intake carb combo That fits under a stock hood? I know the stock heads aren’t the best so I am Planning on doing new heads and cam in the future just want to do something with as little downtime as possible during the summer months! Any recommendations/tips would be greatly appreaciated!
Try an Edelbrock 2101 and stick with the Quadrajet. Try Lars Grimsrud at v8fastcars@msn.com for a performance rebuild or if you want to try yourself get the book by Cliff Ruggles on Quadrajets.
Another inexpensive performance boost is to recurve your distributor.
Try an Edelbrock 2101 and stick with the Quadrajet. Try Lars Grimsrud at v8fastcars@msn.com for a performance rebuild or if you want to try yourself get the book by Cliff Ruggles on Quadrajets.
Another inexpensive performance boost is to recurve your distributor.
was having problems with my stock q-jet so that’s why I was thinking of having it swapped, was thinking of switching over to a mechanical secondary if that’s worth it, and thanks for the intake recommendation I’ll have a look at it!
also haven’t heard much about recurving distributors so I’ll deffinetly need to do some research tonight 😅
Last edited by L82 crusin; Jun 28, 2020 at 04:18 PM.
Actually the Quadrajet is a mechanical secondary with a air valve on the top.
What issues are you having?
well nothing too major was having a sticky float issue where it would sometimes flood, but it’s not that big of a deal At all and can be easily corrected. I thought I might as well upgrade it if I’m deciding to go for some power, but Now just realizing the stock q-jet is rated for 750 cfm which is probably more than I’ll ever need for what I’m building. I’m definitely going to be messaging Lars for a rebuild as soon as possible! As for the distributor recurving, any helpful links you know of to get some knowledge down on it?
Last edited by L82 crusin; Jun 28, 2020 at 04:35 PM.
Well, everybody has a right to post their opinion and so do I.
Although the Eddy 2101 is better than stock (using one myself) it may not be your best option. The reason the 2101 is so popular with C3s is the guaranteed fit, or hood clearance.
I would recommend going to the Edelbrock web site about Intakes. Find the "stats" on the 2101 carb height. That is your current height with the stock unit. Write that number down.
Now, place a gob of Silly Putty on the air cleaner lid and close the hood. That thickness of the putty is how much room you have to work with. Add that number to the 2101 pad height. Write that number down. Now go through your options noting carb pad height on each Intake.
Also note that Eddys web site often states: "Will not work under Corvette hood". (but some do)
As far as carbs? I vote a nice Holley that does not have issues like some of the newer units do. Holleys are so easy to work on you can do it blindfolded. Try that with the Quad-J.
The reason most people shy away from Holley is the confusing and intimidating fabrication of a fuel line to the new Holley set-up.
Well, everybody has a right to post their opinion and so do I.
Although the Eddy 2101 is better than stock (using one myself) it may not be your best option. The reason the 2101 is so popular with C3s is the guaranteed fit, or hood clearance.
I would recommend going to the Edelbrock web site about Intakes. Find the "stats" on the 2101 carb height. That is your current height with the stock unit. Write that number down.
Now, place a gob of Silly Putty on the air cleaner lid and close the hood. That thickness of the putty is how much room you have to work with. Add that number to the 2101 pad height. Write that number down. Now go through your options noting carb pad height on each Intake.
Also note that Eddys web site often states: "Will not work under Corvette hood". (but some do)
As far as carbs? I vote a nice Holley that does not have issues like some of the newer units do. Holleys are so easy to work on you can do it blindfolded. Try that with the Quad-J.
The reason most people shy away from Holley is the confusing and intimidating fabrication of a fuel line to the new Holley set-up.
i think im going to stick with the stock q-jet, shes treated me well so far and dont see a reason to change her out for my application, but i appreciate the intake tip ill see what i can do with some measurements.
i think im going to stick with the stock q-jet, shes treated me well so far and dont see a reason to change her out for my application, but i appreciate the intake tip ill see what i can do with some measurements.
Mixed messages sent:
post 3: was having problems with my stock Quadra . . . . thinking of having it swapped . . . . .
post 9: shes treated me well so far . . . . . . . don't see a reason to change her out . . .
If you are willing to ditch the stock air cleaner, an Edelbrock RPM Q-Jet (7104) will fit using a Moroso Low Profile Air cleaner and 3" filter. Needs slight clearancing for the accelerator pump arm and a new fuel line made up (I used Lars' paper on fuel lines to make my own). Made some marks on air cleaner base so it always aligned correctly. 3/4" clearance to hood. Only issue you will have with the stock Q-Jet is that the choke has to be changed from a hot air setup to an electric setup. There are kits out there for that.
I ran this setup on my '75 for many years. With a small (~214@.050") roller cam and Edelbrock heads, the car was a lot of fun.
I'll find some pics later. Also, where are you (OP) at? I am thinking about cleaning out my garage, so ....
Pics:
Last edited by SteveG75; Jun 29, 2020 at 09:59 AM.
If you are willing to ditch the stock air cleaner, an Edelbrock RPM Q-Jet (7104) will fit using a Moroso Low Profile Air cleaner and 3" filter. Needs slight clearancing for the accelerator pump arm and a new fuel line made up (I used Lars' paper on fuel lines to make my own). Made some marks on air cleaner base so it always aligned correctly. 3/4" clearance to hood. Only issue you will have with the stock Q-Jet is that the choke has to be changed from a hot air setup to an electric setup. There are kits out there for that.
I ran this setup on my '75 for many years. With a small (~214@.050") roller cam and Edelbrock heads, the car was a lot of fun.
I'll find some pics later. Also, where are you (OP) at? I am thinking about cleaning out my garage, so ....
Pics:
I’m in Canada, ontario to be exact. Pm me with what u got I’m definitely interested
Chevrolet Performance Parts' ZZ4 intake manifolds are designed for use on all ZZ series 350 HO engines, but can be used on any small block Chevrolet through 1986. They're about .5 in. lower than an LT1 manifold, for better underhood clearance, and can mount either a standard-flange Holley 4-barrel or a spread bore Quadrajet. They develop the same power as the earlier high-rise design, plus they're set up to accommodate EGR, a hot-air choke, and all late model accessory brackets."
Produces better numbers than just about any of the name brand intakes that are low rise....
Holley 4175 vacuum secondary 650 CFM Qjet is a great carb for the L-82 IF you give up on the qjet. I have a Holley 4175 since 1985 on my L-82...great carb, super easy to tune, easy to rebuild, great performance, super reliable..........
75’ L82 intake carburetor combo help?
