This cam is in a 350 from my father in law. He doesn't remember what it is, the engine had a 3500 stall behind it, and a 4.10 rear. Also has the good old camel humps. I got a new turbo 350 and need to pick a good matching stall.. beat picture i have but i think its CR 882 and 11-12-94
Just did a quick Google search and it came up as the Z28 off road cam. If that's true, stay with alot of gear and a loose converter... It'll be fun!
Googled cr882 and I brought me to the Crane Cams website. Then I searched CR 882 , it came up with 2 cams, one was for a Hemi, one was for a sbc. The sbc cam came up as Z28 off road special cam. It was a very vague search, so it might not be too accurate.
Damn I can't believe I've missed it for so long. Do you think a 650 double pumper was a mistake? It has a holley strip dominator.
Is this the cam your thinking of "427" ? https://www.summitracing.com/parts/crn-968821/ 4200-7200 cam range, wow. 4 speed would be funner than turbo 350. A dial indicator set up on rocker tip would give you an idea on lift to verify specs.
Sure looks like it, first design anyway. Mechanical lifters. 2nd design had .512 intake and .535 exhaust First Design Off-Road cam, P/N 3927140 Casting #3927141 Intake 257 duration @ .050" (333 advertised) Exh. 269 duration @ .050" (346 advertised) Lift: .493" intake, .512" exhaust Intake Max lift @ 108 deg. ATDC Exhaust Max lift @ 116 deg. BTDC 2nd Design Off-Road cam, P/N 3965754 Casting #3965751 Intake 248 duration (324 advertised) Exh. 267 duration (334 advertised) Lift: .512" intake, .535" exhaust
The 3500 stall isn't going to be enough for it then! What gear/stall would be suggested? Cam starts at 4200 and intake starts at 4500? My first real motor.. Anyway I will give it a shot, im guessing 4.56 gears and a 4500 stall?
Yessir, that's the one! Not too sure how accurate the search was though, it was a REALLY vague search.
What are you going to put this engine in? Might be somewhat of a chore to drive on the street. A camshaft like this is going to want lots of compression ratio. Sent from my iPhone using The H.A.M.B. mobile app
How heavy is the car and what is the intended purpose? Those are a couple of contributing factors that determine stall and gear, tire size too.
Exactly I have a pair of NOS 1967 dated 2.02 camel hump heads that came unassembled with all new parts in GM boxes that included the "offroad" valve springs that match the GM version of your camshaft, I planned on using my new hydraulic 151 cam but couldn't use them so sold them. Not clear on your plans but even if you had all the right parts in your engine, that combination is just not something you would like driving on the street, especially with an automatic transmission, regardless of the torque converter used.
I have a new Chet Herbert cam, similar grind, new in the tube. It was ground for a stock car, solid lifters. I'd love to give it a go. I would not drive it with an automatic on the street, with a stick and 4.11 or 4.33 gears and a 2.52-ish 1st gear it would fly.
I have one of these cams in a 327 with a four speed. The engine is bored .030 over and has 11 1/2 to 1 compression. Had a lot is issues with the rocker arm studs being pulled out. Had to install angle plug heads with screw in studs to cure that issue. Valve lash is .022 on intake and .024 on exhaust. It is really a pain to drive on the street. Sent from my iPhone using The H.A.M.B. mobile app
Father in law says stop worrying about it and hold it to the floor, shift when u gotta. Lol. Guess ill just have to do that
My buddy back in the day had a Crane cam of a similar grind, he showed me the cam card a few years back. Range was like 3400-7000. It was in his Camaro with an M21, no special gears. He whipped the snot out of it, blew rears and Muncies like shit through a goose.
A friend of mine had one ,,2nd design,,, in his 69 Z28,,,it was a real Z car with the 302 and all. It was as scary a ride as you would ever want to experience,,,,would rev to over 8000 all the time. It was also the nicest car I ever sat in,,,,,I didn’t know that an old car like that could be so quiet inside. No wind noise,,,no rattles,,,no squeaks,,,just a show car that would run like hell. And he abused it on a regular basis . Man. Those were good times! Tommy
Not trying to hijack the thread but , does anyone remember what the valve lash is for the 2nd design 754 cam? I've had one on the shelf for 25 years and I'm dying to put it in something! Just always been leery of the street manners, but subconsciously I know what the answer is... too damn big...
Info from Chevrolet Power, 5th Edition, 1984- 3965754 2nd Racing Design, Good Short Track and Road Racing cam. IO 47° BTDC IC 97° ABDC Duration 324° Dur. @ .050 249° Lift .503 Lash .024 EO 93° BBDC EC 51° ATDC Duration 324° Dur. @ .050 258° Lift .508 Lash .026
Thank you sir! Invaluable info, right there! A lot of good info in that book, I know I have one, somewhere... I'll be damned if I can find it though! I probably put it someplace where I wouldn't forget about it...
Kool! What did ATI recommend after you gave them your car's combination? I'd be interested to know how it runs after you get it together and all sorted out. Please keep us posted.
They reccomended 4.56 rear and said even with 4.10 it will be hard to street. As far as stall they want it all in at 5k but said they dont build around numbers, just specs.
A 5000 stall on the street? Is this a street racer? I hope it works for you,,,you do realize that it will always be slipping unless you have the pedal to the floor? The one my friend had was in a stick car,,,,a Rockcrusher,,,with a 4.10 rear gear. It truly was bad,,,,,but it had power down lower,,,around 2300. Now I admit,,,it had a lot of engine gear to go with it. Roller rockers,,,double bar stud girdle,,,Weiand Power Ram intake,,,annular discharge Holley. But everything else was 302,,,,DZ block,,,factory steel crank,,,stock rods and factory pistons,,factory Z28 heads,,,that had been massaged. Plus,,,he was a hell of a good driver. Tommy
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