COMP Cams CL51-221-4 Xtreme Energy 212/218 Hydraulic Flat Cam and Lifter Kit for Pontiac 265-455

$ 156.95

Score By Feature

Based on 10 ratings

Satisfaction

9.32

Giftable

9.02

Value for money

9.36

Delivery

9.33

OveReview Final Score

How Our Score Is Calculated

Product Description

It has a strong torque output at the low and mid range, as well as a

Choosing an operating range between 1,000 and 5,200 RPM

The duration of this session was 212/218 minutes. This is "050". There is a 110 degree separation angle between the lobes. The 447"/0 format. Lift of the valve is 455"

In addition to the camshaft, a set of lifters, instructions, and assembly lubricant are included in CL Kits.

It performs very well in street cars with carburetors. A more responsive lift curve and more area under the lift curve are promised by any opening lobe profile with a faster opening.

Increasing the vacuum allows the brakes to operate for longer and assists the performance of With aftermarket intake manifolds, headers, and lower gear ratios, it will perform best.

A Pontiac 265-455 V8 should be able to use this pipe

This product is made in the United States

Questions & Answers

Would I need to change the push rods and rocker arms from the factory ones to the performance ones for this ?

You will need to measure the pushrod length on the engine to make sure you get the correct Rocker arms that are up to date are not a necessity, but are advised with this

The cam for a Pontiac 301 4 feels like it would work. What's the deal with 9 not ?

A 301 engine can use this cam.

Engines that will be used in the K51 The number 222 Can 4 be a part of this group?

There is a 326-inch fitting here There have been many applications for the 455ci V8 Pontiac.

Selected User Reviews For COMP Cams CL51-221-4 Xtreme Energy 212/218 Hydraulic Flat Cam and Lifter Kit for Pontiac 265-455

This is a great kit at an excellent price

5/5

I have not installed it yet, but it looks to be a good deal. The packaging looks okay as well. I found a few small areas of rust flash on a few lobes of the cam, but it will easily rub off with steel wool and oil. This is a great deal for the price. I hope it works and that the car has more power when it is finished. I will install it after a few months, maybe I will provide some feedback once it is You will find it for a 1967.

Stephanie Joseph

| Dec 12, 2020

For Pontiac, a comp cam set

5/5

The product looks great and appears to do the job pretty well. I couldn't beat the price, and I received it Thanks a lot. It's a good day to be a camper.

Joe Gibson

| Jun 18, 2021

It has been misengineered to the nth degree

3/5

The installation of this kit as is will destroy your engine! Please read and understand the instructions carefully. A camshaft is a great piece of machinery. There's a lot of power with a wicked throttle response, as well as an unholy midrange An idle that's really choppy and lacks midrange power. In the end, it was the design of the rest of the kit that I had issues with. The valves have two springs a closed spring with a force of 200 pounds, and an open spring with a force of 420 pounds. When it comes to a 400 Pontiac street rod you don't want to weigh more than There are 320 points of closed pressure and 320 points of open pressure. More than that, a cam lobe will be wiped out, and the valves in the heads will be beaten out. Isn't it strange how so many cameras seem to I believe this has a lot to do with it. Second, of the three springs, only the flat one coil binds when the cam is fully lifted. There is yet another problem to deal with. An engine fails when coil springs are binded and 420lbs of pressure is applied. It was recommended that pushrods be installed. The valves remained open for too long because the valves were left open too long. So I ordered new 120lb rods whose lengths were correct and the valves were not closing. This resulted in no compression and the engine would not start. And, I really mean wicked! I built a new engine with new valve springs and it is running like a dream. However, had I just thrown this kit into this engine as it was and started it I would have been faced with a choice between two scenarios. As the push rods were not the correct length, the engine would not start or would have self destructed when it was up and running. Luckily, I'm an automotive veteran of over 30 years and I know how these motors should be set up from back in the day! It is time for COMP to rethink the engineering on this kit and to stop treating Pontiac motors like BBC drag engines. There is a difference between them! As a result of poor engineering, there is no telling how many Pontiac motors were killed. It makes me shiver to think about it. It would be great if the makers would give this kit another look and correct it. Using just the two flat and coil binding springs will give spring pressures of 140/340 if you leave out the flat, coil binding spring. This is still about 20lbs too high, but I think it It's important to choose a good oil for this recipe. Valvoline Racing High Zinc 20w50 is my oil of choice. I have never been let down by it in all these years. Moreover, the valves will not float at that pressure, not even at 6500RPM, and this is a good thing. You did mention it is a wicked cam, didn't you? As well as the lifters, they are made in the USA. Thank you for letting me know!.