Edelbrock performer rpm bbc heads review

JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. E-Comm Sales: Sales: Tech: Be the first to review this product. Skip to the end of the images gallery. Skip to the beginning of the images gallery. Add to Wish List. In stock. SKU Fast Shipping. Tech Support. Easy Returns. Fast shipping. Edelbrock prides themselves in ensuring all products are shipped as quickly as possible.

Easy returns. Edelbrock offers a quick and painless return process on all new and unused products. Tech support. Edelbrock Tech Support is second to none. We can answer any of your tech inquiries! High quality. Edelbrock core products are made in the USA offering unsurpassed quality and performance. Reviews No reviews added.

Value 1 star 2 stars 3 stars 4 stars 5 stars. Submit Review. The Edelbrock Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from to rpm. They also feature the highest quality intake and exhaust valves and valve springs.

For use on pre-pollution controlled vehicles only. PDF-Installation Instructions. For more information, visit www. These oval port heads will support over hp with 9.JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. E-Comm Sales: Sales: Tech: Be the first to review this product.

edelbrock performer rpm bbc heads review

Skip to the end of the images gallery. Skip to the beginning of the images gallery. Add to Wish List. In stock. SKU Fast Shipping. Tech Support. Easy Returns. Fast shipping. Edelbrock prides themselves in ensuring all products are shipped as quickly as possible.

Easy returns. Edelbrock offers a quick and painless return process on all new and unused products. Tech support. Edelbrock Tech Support is second to none. We can answer any of your tech inquiries! High quality. Edelbrock core products are made in the USA offering unsurpassed quality and performance.

Reviews No reviews added. Value 1 star 2 stars 3 stars 4 stars 5 stars. Submit Review. The camshaft works well with high-performance street applications, Performer RPM cams provide power from to rpm.

This hydraulic lifter camshaft is dyno-matched to Performer RPM manifolds for high-rpm horsepower while still maintaining acceptable low-end torque.See all 10 photos. I have a Chevelle SS that I bought new. It is a big-block, four-speed car with 3. I want to freshen the engine up by increasing the compression ratio from 8. My stock heads are open chamber with cc chambers.

The head has cc chambers, with having cc chambers. Which head can I use to achieve about a 9. I have gotten all kinds of opinions on this; they are all over the board and I am totally confused. My stock piston has casting No. I am told that the Edelbrock heads won't work because the piston will hit the spark plug because the plug has been relocated.

Likely, neither head will do it out of the box. Your will only achieve its rated 8. In the real world, an original, nonrebuilt, stock, unblueprinted engine could easily be at least a half-ratio lower than "it's supposed to be" because, for example, the blocks are not machined to minimum to allow for "worst-case" tolerance stack on the non-blueprinted internal components. That said, whatever your true compression ratio is now, the cc won't come close to meeting your target on the existing short-block.

The cc Edelbrock has the potential to raise the compression ratio just shy of a full point compared to your existing cc factory head—assuming no other changes, including the use of that OE-type, thin head gasket.

But with aluminum heads, you'll need to use a "thick" composition-type head gasket to reliably seal them on the block. In fact, I frown on shim-type head gaskets even with iron heads with in-service engines unless the block and head decks are dead-nuts flat. A "thick" gasket will lower the static compression ratio about 0. By a "thick" gasket, we mean a modern-performance, aftermarket, composition-style head gasket such as Fel-Pro PN or These 0. Which of the two gaskets should be used on your engine is based on the block deck's cooling hole locations; was a transition year, so compare the gasket photos on these pages to the deck holes in your block.

But will the cc head hit the pistons? Edelbrock says the head develops "9. Your small-bore piston still has a slight dome, so we now need to address the question of chamber configuration and spark-plug location. According to Edelbrock, only its E-CNC oval-port big-block Chevy heads, as well as all of its rectangular-port big-block Chevy heads, have revised spark-plug locations that may require pistons designed around the specific cylinder head.

Edelbrock's Performer and Performer RPM oval-port big-block heads including the part numbers you're considering are said to maintain the standard spark-plug location. But in the case of the cc head, there's a catch: To reduce chamber volume from the normal cc Edelbrock chamber to cc, Edelbrock rolls over angle-mills the head decks 1 degrees from standard.

This design improves intake-port alignment and provides a smaller combustion chamber without shrouding the valves, but yes, it does effectively relocate the spark plug slightly.

Big Block Cylinder Heads - Big-Block Cylinder Head Test

The old-school rule concerning domed piston head compatibility on big-block Chevys is: Closed-chamber pistons usually are OK with open-chamber heads, but open-chamber pistons shouldn't be used with closed-chamber heads.

But, again, we're in a gray area: Your stock iron cc factory chambers are neither fully open nor fully closed.JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. Performance ranges from an emissions-legal street-oriented bolt-on for daily drivers to a full-on race casting for serious competition.

Edelbrock Aluminum Cylinder Heads are ready to bolt on and go right out of the box. Just choose your level of performance. Made from the finest material, with total in-house manufacturing in our ISO certified California-based facilities. These specially designed heads are unported and feature extra-thick decks, under-sized intake and exhaust runners, and increased wall thickness that allow professional head porters and engine builders to perform custom CNC porting and other modifications.

Pro-Port Raw heads are semi-machined with finished accessory, intake and exhaust flange bosses. E-Comm Sales: Sales: Tech: Using highly efficient port designs and state-of-the-art combustion chamber shapes, Edelbrock cylinder heads offer improved performance throughout the rpm range for great throttle response and top-end horsepower.

E-Street cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5, rpm range. They are available for popular V8 engines.

edelbrock performer rpm bbc heads review

Select heads are state emissions legal and are designed to fit emissions-controlled engines. These heads deliver great throttle response and power from 1, to 6, RPM.

These heads feature the highest quality intake and exhaust valves and valve springs. They feature larger runners for increased airflow, revised exhaust ports and larger diameter springs for higher-lift camshafts making them ideal for a spec series racer and larger-displacement engines. These heads also have as-cast ports and maintain the stock exhaust port location making them compatible with OEM headers and hardware.

E-Series cylinder heads are available for small-block Chevy and small-block Ford. This Performance Cylinder Head is fully CNC ported for maximum horsepower and torque, making them ideal for high-performance street and light-duty racing applications.

They also feature high-quality lightweight valve springs and heavy-duty hardware for maximum lift and maintain the stock exhaust port location. Series Race Cylinder Heads offer high horsepower potential on competition-level engines and are compatible with OE valvetrain and pistons for bolt-on convenience.

Edelbrock engineers work with leading racers like Billy Glidden, John Urist and Pat Musi to produce the ultimate components for racing. The end result is a competition-ready cylinder head that features race-winning technology right out of the box.JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. E-Comm Sales: Sales: Tech: Be the first to review this product. Skip to the end of the images gallery.

Skip to the beginning of the images gallery. Add to Wish List. Out of stock. SKU Notify me when this product is in stock. Fast Shipping. Tech Support. Easy Returns. Fast shipping. Edelbrock prides themselves in ensuring all products are shipped as quickly as possible. Easy returns. Edelbrock offers a quick and painless return process on all new and unused products. Tech support. Edelbrock Tech Support is second to none. We can answer any of your tech inquiries!

High quality. Edelbrock core products are made in the USA offering unsurpassed quality and performance. Reviews No reviews added.

Pit Stop: Edelbrock 100cc Big-Block Oval-Port Heads—A True Bolt-on?

Value 1 star 2 stars 3 stars 4 stars 5 stars. Submit Review. The Edelbrock Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed.

This cylinder head delivers great throttle response and power from to rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only. PDF-Installation Instructions. For more information, visit www. Use pistons designed for our heads. Match with Edelbrock head gasket sets.See all 18 photos.

Maybe it's some sort of deep, genetic, missing-DNA-link thing between car crafters and Chevy Rat motors that insists on monstrous, rectangle-port cylinder heads. It's like some kind of baritone inner voice that won't be content with anything less than massive cc intake port heads on a We learned long ago not to listen to that caveman voice.

Instead, we decided to look into how much power we could extract from a set of oval ports. That led us to stacking up all the available aluminum oval-port heads on a Rat and pushing 'em hard on the dyno. For a testbed, we used our existing cast-cranked Rat motor built back in the Mar.

We also included a set of production iron peanut-port heads just to see how they would do as a baseline.

Affordable Cylinder Heads - E-Street Heads

We really wanted a set of true iron oval ports, but we couldn't find any that hadn't already been ported. We also tamed the camshaft with a hydraulic roller so we wouldn't have to spin the engine as high to get the peak horsepower numbers. The results of this shootout were more than a little surprising. But be sure to read this entire story, not just glance at the power numbers, because we evaluated these heads in a bunch of interesting ways.

Taken as a whole, the oval-port Rat market offers heads that are a lot stronger than you might think. The Mule If you recall, we built a ci Rat in the Mar.

We had to twist that combination up to 6, rpm to achieve that power, which created more than a few Internet blog predictions of imminent engine failure focused on the cast crank and stock rods. Despite those doomsday prognostications, the engine is still very much alive even after this latest thrashing.

But acknowledging those realities, we know it's just tempting fate to continue to spin this thing that fast. To remain consistent with a conservative oval-port street concept, we decided to pull back on the cam timing to keep the peak horsepower below 6, rpm.

This milder Comp Cams hydraulic roller cam timing is also a better fit with the entire oval-port package, including the Edelbrock RPM Air-Gap dual-plane intake manifold and cfm Barry Grant carburetor. If peak horsepower had been the goal, we would have chosen any one of many single-plane intakes that would have easily kicked it up over hp.

Taken as a whole, this engine package turned out to be extremely successful considering that the engine idles at rpm with 12 to 13 inches of manifold vacuum and offers tire-shredding torque. We'd call that very streetable. Edelbrock Heads The Edelbrock Performer RPM oval ports are an interesting mix within the collection of aftermarket aluminum oval-port heads. They offer the largest intake-port volume of cc with the smallest 2.

Among the specs we list for each head is the intake port cross-sectional area. We measured each of the five heads in the same basic place in the intake port to determine the smallest cross-sectional area. This dimension, in square inches, is intended to give you an idea of which head will generate the highest intake velocity based on size.See all 4 photos.

edelbrock performer rpm bbc heads review

This comes at the right time. Edelbrock has introduced its E-Street cylinder heads, a new line of lower-priced stuff to combat the knock-offs and the legit competitors that use Chinese castings. We asked if Mopar versions were coming soon: negatory. The E-Street line is marketed for applications under hp and 5, rpm.

The heads appear to us to use Edelbrock's Performer RPM castings but without all the finish work and hand-blending used in the higher-cost heads. Less costly valvetrain components are used, though features such as Helicoiled rocker-stud bosses are retained.

The main things limiting the rpm potential are the valvesprings, which are intended for small, flat-tappet cams; they're 1.

Machining would be required to install larger-diameter springs. The E-Street heads are not smog-legal, as the Performer heads are. To test the Chevy version of the E-Street heads, we compared them against GM's Vortec heads, which we consider the all-time kings of small-block bang for the buck. E-Street vs. However, those heads tend to be limited to between 0.

The problem is that the valvespring retainer contacts the top of the valve seal at high lifts. Some say Vortec heads can go to 0. Those have machined valveguides and so-called Z28 springs good for 0. While it probably won't matter with cam profiles under 0.

Likewise, the E-Street heads come with pushrod guideplates, while the Vortecs require guided rocker arms. However, there are other costs to consider. If you do not opt for guideplates on your Vortec heads, you'll need self-aligning rocker arms. If you want roller rockers, shop carefully: Some self-aligning versions are more expensive than the standard versions, others are about the same. See the captions for a tip on how we removed the guideplates and used cheaper standard pushrods and guided rockers with our E-Street heads.

But there's more.