COMP Cams CL42-221-4 Xtreme Energy 212/218 Hydraulic Flat Cam and Lifter Kit for Oldsmobile 260-455

$ 156.95

Score By Feature

Based on 15 ratings

Delivery

7.80

Value for money

7.57

Satisfaction

7.50

Packaging

7.36

OveReview Final Score

How Our Score Is Calculated

Product Description

By entering your model number, you can make sure that this fits.

Torque is strong throughout the low and mid-range, and the idle is smooth.

Operating Speeds: 1,000 – 5,200 RPM

At 212/218, the duration is. 050". The angle of separation between the lobes is 110 degrees. 453"/0. Valve Lift Height: 456" Valve Lift Height: 456" Valve Lift

A camshaft, a set of lifters, instructions, and assembly lubricant are all included in the CL Kits.

Excellent performance in carbureted applications on the street. Greater responsiveness and more area under the lift curve are provided by lobe profiles that open faster.

Increased vacuum allows for longer duration, which improves performance and aids power brakes. With aftermarket intake manifolds, headers, and lower gear ratios, you'll get the best performance.

The 260-455 Oldsmobile is compatible with this part.

Made in the United States of America

Questions & Answers

At idle, what can I expect in terms of vacuum pressure? In a 403 with five heads at 9, I installed this cam. Compression factor of five At idle, it appears to have a big roll. ?

We have a quardajet carburetor, and for circle track racing, we get 12" at 800 rpm, and at 1200, it's a 16" olds engine! Carb is also good for high-rpm racing.

Is it possible to run this cam with stock push rods and rockers?

Maybe, but most likely not without a few tweaks. In my Olds 350, I used the 218/224 version of this cam. The circumference of the cam base circle was 0. Because the lifters were 0.098" smaller than stock, they sat 0. They are now 049" lower than they were previously. Because my heads were milled to zero, I was able to use stock pushrods. I used thinner head gaskets and a thickness of 030". You'll need to double-check your lifter preload to ensure it's within acceptable limits. The steps are outlined in the instructions. It's possible that you'll require longer pushrods or rockers that can be adjusted.

Is it necessary to have a stall with this camera?

It may or may not, depending on the cubic inch. A 2500 stall is required for a 260ci, but a stock stall can be used for a 455ci.

Is this kit compatible with the factory heads on an Oldsmobile 350ci from 1978?

So far, I've been able to manage five heads without difficulty.

Selected User Reviews For COMP Cams CL42-221-4 Xtreme Energy 212/218 Hydraulic Flat Cam and Lifter Kit for Oldsmobile 260-455

Olds 350, Comp XE 262H I'm downgrading my original 5-star rating to a 2-star rating

3/5

This cam looked great at first, and it would probably still be great if it held up. However, it did not stand the test of time. The engine is a rebuilt 1972 350 with an 8. 4:1 compression ratio. one compression, one compression It made great power throughout the entire rpm range at first, with good idle vacuum, thanks to 5/8 headers and a Performer intake. However! At RPMs above 4000, it developed a miss, resulting in two intake lobes flattening. Cam was broken in with Comp supplied lube and high zddp oil, but two lobes flatted in less than 500 miles. Because the ramp rates on the extreme energy series are so aggressive, it appears that this is a common problem. I replaced it with a milder cam from a different company, and it's been fine so far.