Are ported 241 heads good?

Ported 243 heads have much better flow numbers. Ported 241 heads are somewhat better then stock, but not much no as good as stock 243 heads.

Do ported heads need a tune?

The sole purpose of head porting is to move a larger volume of air through the motor. More air requires more fuel to maintain proper A/F ratio, so yes I would definitely re-tune.

What LS heads are the best?

The LS6 was designed specifically by GM to surpass the LS1 as the best performance head, and it did such a good job that the “243” casting was recycled on the LS2. Aside from the LQ9, which is a copy of the LS6, these are the best performing of the OEM cathedral ports.

What year did 5.3 have 243 heads?

The 243 heads came on the LS6 engine produced from 2001 to 2006. It was typically found in the C5 Corvette, but it was eventually ported to the LQ4 and LQ9 to meet truck specs.

How much does it cost to get cylinder heads ported?

The cost for the procedure can vary widely from as little as $200 to more than $2000 dollars. A Stage III port and polish, however, is generally the best value and provides the most performance for your money. This type of port and polish costs about $500, depending on the type of vehicle you have.

How much HP do you get from port and polish?

In fact, a good port and polish job adds an additional 10 percent in both horsepower and in fuel economy, so it’s worth it. Start by cleaning the ports and then painting them with layout fluid. Place the high-performance intake manifold gaskets and exhaust gaskets in place and secure them with the bolts or nuts.

What are 241 heads?

The 241 heads were used on 5.7L LS1 applications and are considered by many to be just a minor step up in performance from the 706. In terms of peak flow, the 241 heads offered 242 cfm at 0.700-inch lift from the 199cc intake ports, and 204 cfm from the 71cc exhaust ports.

What LS is best for boost?

If you’re planning on boosting your project the 4.8L truck engine will be perfect for you. The 4.8L can take insane amounts of boost completely stock and will really perform well. If you don’t want a barebones 5.3L or 4.8L you could always step up to a 6.2L truck block which is based on the LS3 engine.

Are 243 heads better than 241?

The 243 heads as used on the LS2 motor flow at 260 CFM on the intake. LS6 243s (CNCed) with sodium filled valves flow a little better at 280 on the intake. The stock 241 head flows at 220 on the intake. Either head is a considerable improvement.

How much HP gain on 243 heads?

A pair of 243 heads add up to about 20 horsepower (hp) on the GM’s bolt-on LS1 or LS6 engine. Since the engine already features an aggressive camshaft, it might experience a little bit more horsepower.

Can you port heads without removing?

Don’t even attempt it with the heads on the car. It’s only going to take 1 piece of metal either from the burr or the head to wedge itself between the cylinder wall and the piston and annihilate your block. If you want to gasket match your heads to your ported intake, remove the heads.

Are 241 heads aluminum?

241 GM Ls1 Aluminum Cylinder Heads 12564241.

What are cylinder head porting tools?

With cylinder head porting tools, you have greater performance on the cylinder head made of mainly aluminum. They represent wonderful tools for redesigning and polishing the intake and exhaust passageways for engine cylinder heads. Syndent is certified to sell cylinder head porting tools in China and the rest of the world.

Can You port a cylinder head at home?

Any hardcore hot rodder or sportsman racer is intrigued by the thought of DIY cylinder-head porting at home. Then, they can then proudly stand like Superman at the door of their shop and say, “I just gained more power from my cylinder heads.”

Does “hogging out” the intake port on a pair of heads hurt performance?

The object of this tech article is to explain that just “hogging out” the intake port on a pair of heads can easily rob power from your high-performance engine rather than making gains. Today’s internet research is a tool as important as your die grinder when it comes to head-porting basics for the novice.

What are syndent porting tools for cylinders?

Syndent porting tools for cylinder heads have uniquely built burr shapes that can sufficiently soft materials. With fine cutting scrap, you can smoothly aluminum and other soft materials. Moreover, you can nicely drill through drywall, concrete, ceramics, plastics, rubber, and more.