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Old 10-04-2006, 07:15 PM
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383 cam

i have a comp cams 292h "244 at 050". i have been told my engine will be a slug if i use this cam on the street. i have a 70 nova that has the staight 6, and powerglide set up. i have a 350short shaft tranny and a freshly tore down 3970010 350 block. 2 bolt mains. my problem is that i want to build this engine once, i don't want to base my engine off a cam sound. comp makes a cam called a "hot street cam" that advertises 268 duration, they say it is the largest and best all around cam on a stock torque converter. is this a better way to go or should i really consider another alternative. my rotating assembly will probably be an eagle or scat. all stroker guys please help me out, please don't let me make a huge mistake!

ADAM

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Old 10-04-2006, 07:27 PM
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More info needed......Like what you plan on doing with it street strip, gear ratio, tire height etc....
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Old 10-05-2006, 07:03 AM
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To properly utilize this camshaft, you will need to use a minimum stall speed of 3500, and use 4.10 ratio rear end gears.

If you are prepared to do this, it will run well, and sound very nice.

If you try highway gears and a tighter converter, you will need to buy dog food instead of gas.



NAIRB
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Old 10-05-2006, 04:31 PM
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street

i only have one race in mind for the entire life of this car, it's against my cousin who has a 2000 model sierra. it's a 292 v8 and my entire family thinks it's the baddest thing on 4 wheels. it is a stock truck.the gears in my car will be around a 3:73. i really want some bragging rights for my car! im sick of hearing about how bad this truck is. will my engine/tranny/gears/cam out do him?
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Old 10-05-2006, 06:13 PM
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I would say yes it would. But try to get him to the drag strip so he cant make any excuses.
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Old 10-05-2006, 07:24 PM
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you da man!

thanks man, you have made my night!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !i hope this 268duration cam makes a nice lope, i thought about painting my car with pink poka-dots so i could say he got beat by a poka-dotted nova but that would be a crime against my car. also, i have a set of air shocks that i bought for 20 bucks. i'm thinking about putting them on my car,are they worth it? they are in perfect working order and appear to be in great shape as far as looks are conserned.
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Old 10-05-2006, 11:33 PM
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cam

I would check out www.lazercams.com They are very knowledgeable about cams. NAIRB recommended me to them and I took his advice and I ended up buying a cam and lifters from them. It was for a 383 stroker motor. It was one of the best cams I have ever bought. It also had a really nice lopey sound to it too. and it really made the engine sound good.
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Old 08-02-2009, 09:28 PM
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re 383 stroker

I have a 71 nova 383 stroker ,9.1 comp ,373 rearend, 286 comp cam, roller rockers, 2500 hughes stall converter. It sounds nice and will shred the tires off. It needs some traction and probably 3000 to 3500 stall. All in all it was a good cam choice. Good luck!!
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Old 08-03-2009, 01:05 PM
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Do you guys have any clearance problems between the cam and the rod big ends? I had SUM-K1105 cam+lifters kit and I had to grind one of the rod big end near the bolt. The rods were 5.7" forged Scat I-beams (application: clearanced for stroker). I'm changing to bigger cam and I'm a bit worried about the clearance.
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Old 08-03-2009, 01:26 PM
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a stock 2000 Sierra is the car to beat by you?! Seriously? I think every car I've ever owned (with the exception of the Bobcat that I have not torn into yet) could beat that. That's including my 87 Escort station wagon.

With a 2bolt main you'll want to redlien it no higher than 6000 RPM, and even then cap walk may be of concern. I'd go with the 268 or even 262- either with high ratio roller rockers, you'll have no problem beating him provided you do a decent job on the rest of the build. heads need to flow at least 220cfm, use at least a RPM manifold, long tube headers, a good rebuilt HEI, a 600+cfm carb, and about a 3.5 rear gear. For a great sound run 2.5" dual exhaust with magnaflow mufflers. I'd also build it at 9:1 compression which is a bit low but will allow you to run 87 octane, I'm guessing costs are of some concern.
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Old 08-03-2009, 04:17 PM
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383 cam

I am not sure, I had a machine shop do the engine work. My block is the same as yours 3970010 and it is a 4 bolt main! Check yours again!
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Old 08-03-2009, 06:07 PM
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Quote:
Originally Posted by jankinnu
Do you guys have any clearance problems between the cam and the rod big ends? I had SUM-K1105 cam+lifters kit and I had to grind one of the rod big end near the bolt. The rods were 5.7" forged Scat I-beams (application: clearanced for stroker). I'm changing to bigger cam and I'm a bit worried about the clearance.
There will be differences between blocks because they are cast and because they are machined on a high-production assembly line, so block to block will be different. Grind the rods for a 0.050" (1.27mm) clearance, then dress up your grinds with finer and finer sandpaper to prevent creating a stress riser. You'll be fine.
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