We planned to get into some detail on assembling the short block this month, but due to time constraints mixed with waiting for a few parts, we just could not get it completed. We run through cam and valvetrain choices for our budget nitrous’d SBF. As you know, we chose COMP Cams for many parts on this project. COMP has been in business for over 4 decades and takes pride in providing quality valvetrain parts backed by excellent service. Whether you are opening up their printed catalog or going on-line and using their renowned CAMQUEST software, they have the right 106 106
august 2020 | RPM Magazine
part for your needs. While COMP has an excellent assortment of offthe-shelf camshafts for most popular engines, they also offer very fast custom cam grinding service for enthusiasts and racers who need something a little different. In fact, I personally have used their custom cam grind service many times and it seems they always have the required core in stock for a rapid custom camshaft purchasing experience. Not to mention, their Master Lobe Profile Catalog, which is filled with 150 pages of lobe designs, is an engine builder’s dream! For the PCRC engine, we knew that a solid/mechan-
ical roller is the way to go. We need to get that valve open fast and matched with the correct valve springs to get it shut just as fast. The solid roller lobe is a more aggressive lobe design which we require for our application. Years ago this cam probably would have been a custom grind, but in today’s world, COMP keeps this one on the shelf. Our camshaft part number is 35-782-9 and the grind number is 318DR12. This solid roller is made from a billet steel core for optimum strength. The cam is designed for 377+ cubic inches, race port cylinder heads, and a 300+ nitrous hit. The lobe lift is .465”