Quick Answer: What Are The Best 305 Heads?

What does the Z in z71 stand for?

offroading suspensionMost of the time, they are for an RPO code for the suspension.

Z28 was the RPO code for the Trans-Am spec Camaro.

Z71 gets you an offroading suspension.

Z06 was a special suspension for race-type Corvette from the 60’s.

Z24 and Z34 were spin-offs of the Z28’s performance image..

Can you make a 305 fast?

EG: the Monte Carlo SS 305 motor came with a special 3000 stall lockup converter and 3.73’s. To start with pull off one valve cover and get the cylinder head csting number off your heads. Yes you can make your 305 fast.

How much compression should a Chevy 305 have?

It should go up to at least 120-150 psi when freshened.

Can you supercharge a Chevy 305?

There should be NO problem supercharging a 305. You will have to use a smaller lower/bigger upper than a 350 but at the same time the super for a stock to stockish 350 should be good for your 305 as well.

Are Chevy 305 engines good?

Although not recognized as a high performance engine, versions including the L69 “High Output 5.0L” and LB9 “Tuned Port Injection 5.0L” were respectable street performers. Although it’s reputation as a passenger car engine was compromised, the 305 has actually experienced some success on the race track.

What can a 305 be bored out to?

A 305 Chevy has a stock bore of 3.736 so even at . 060 over you only at 3.796 so NO.

How much HP can you get out of a Chevy 305?

“Nader” Of Performance With 8.6:1 compression and a grossly mild hydraulic cam, a stock LG4 ’82 Camaro 305 wheezed out 145 net hp at 4,000 rpm and only 165 lb-ft of torque at 4,200, as installed in the car complete with a catalytic converter.

How can I get more power out of my 305?

Bolt-on UpgradesReplace the exhaust manifold. The stock exhaust manifold of the 305 engine restricts air flow from the engine increasing back pressure. … Replace the intake manifold and carburetor. … Add cold air induction. … Replace the computer chip.

Can you stroke 305?

The 305 uses a tiny 3.736-inch bore and the same 3.48-inch stroke as the 350ci motor. While it’s relatively easy to drop a 3.75-inch stroke crank in a 305 block to create a 0.030-over stroker that displaces 334 inches, it’s just not a great performance decision for several reasons.

Are 305 and 350 Vortec heads the same?

Different, basically the L31, 350 Vortec head is a new design with different ports and chambers. The LO3, 305 is the same old 305 head with a new name.

How long does a 305 engine last?

Re: How long do these engines typically last? 291,000 and counting on a 305 TPI. Oil change every 4K with Penzoil high mileage brand.

Are 305 heads good on a 350?

305 heads on a 350 will raise your compression a good deal, maybe even too much for pump gas if you have flat tops or domed. I would go with 350 heads if I were you. If you have flat top pistons a set of 350 heads would be best.

Can you put Vortec heads on a 305?

Get a set of 305 L30 Vortec heads. NO, they don’t flow as good as the 350 Vortecs but they flow better than most production 350 heads and they work GREAT on a 305. They don’t have the 350 Vortecs heart shaped chamber but they do have a 58cc chamber which solves your compression problem.