1978 Camaro 305 Which inlet and carb?
Discussion
Hello new to this section of PH as just got my 1st American car.
Would appreciate a little bit of help with upgrading the Carb to a 4 BBL from the weedy 2 BBL fitted.
Car is 1978 Camaro LT in standard trim.
The engine is a 305 SBC with later heads from an IROC 1988 Camaro. (the ones with the finned covers)
I want to upgrage to an Elderbroke carb with vacuum secondaries and suitable inlet manifold. The bonnet is the one
without the inlet in the middle so clearance is minimal.
Can anyone help with this please?
Would appreciate a little bit of help with upgrading the Carb to a 4 BBL from the weedy 2 BBL fitted.
Car is 1978 Camaro LT in standard trim.
The engine is a 305 SBC with later heads from an IROC 1988 Camaro. (the ones with the finned covers)
I want to upgrage to an Elderbroke carb with vacuum secondaries and suitable inlet manifold. The bonnet is the one
without the inlet in the middle so clearance is minimal.
Can anyone help with this please?
I had a '79 Malibu with the 305. It had a quadrajet carb stock with the same heads you have now (HO "big" valve 305 heads).
When the Q-jet wore out, I installed a Holley dual plane manifold that was a replica of the old Z28 manifold. The Edelbrock manifold mentioned is probably a good substitute. Also installed an emmisions oriented 600CFM vacuum secondary Holley with an electric choke on it,(not the List 1850).
IMO, Edelbrock carbs are pretty dated devices. Chevy gave up on them in the mid 60s when they were called Carter AFBs. Chevy got them off the Corvettes ASAP as they were prone to fuel starving in corners. Take a look at where the jets are located and you'll see why. They are a favorite of the "cars and coffee" set, tho, because those people never drive the cars anyway.
The engine, my engine at least, liked tubular headers, 1 5/8" primary) and 2 1/4" dia. dual exhausts with no cat.
It also liked the stock HEI distributor with the stock advance curve. Cranking in more/ quicker advance really makes no difference to this engine.
Avoid single plane intake manifolds as they make the bottom end of the power curve go a bit flat. I know, I tried it!
Have fun, it's actually a pretty good engine if you don't expect too much from it.
When the Q-jet wore out, I installed a Holley dual plane manifold that was a replica of the old Z28 manifold. The Edelbrock manifold mentioned is probably a good substitute. Also installed an emmisions oriented 600CFM vacuum secondary Holley with an electric choke on it,(not the List 1850).
IMO, Edelbrock carbs are pretty dated devices. Chevy gave up on them in the mid 60s when they were called Carter AFBs. Chevy got them off the Corvettes ASAP as they were prone to fuel starving in corners. Take a look at where the jets are located and you'll see why. They are a favorite of the "cars and coffee" set, tho, because those people never drive the cars anyway.
The engine, my engine at least, liked tubular headers, 1 5/8" primary) and 2 1/4" dia. dual exhausts with no cat.
It also liked the stock HEI distributor with the stock advance curve. Cranking in more/ quicker advance really makes no difference to this engine.
Avoid single plane intake manifolds as they make the bottom end of the power curve go a bit flat. I know, I tried it!
Have fun, it's actually a pretty good engine if you don't expect too much from it.
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