Author Topic: comp cams for 355  (Read 2957 times)

Offline 305chevy c-10

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comp cams for 355
« on: April 03, 2011, 05:23:21 PM »
has anyone used a comp cams xr264hr-10 ...in a 355 with vortec heads ,rpm air gap high rise intake ,dished pistons ............comp cams tech said this motor should be real torquey and make about  400tq from about 1500-5000
Heartbeat of America yesterday's cheverolet
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Offline hahny115

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Re: comp cams for 355
« Reply #1 on: April 03, 2011, 05:41:43 PM »
I am curious as well because I am building the same exact motor only I'm using Comp xr282 hr.

Offline blue-by-you

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Re: comp cams for 355
« Reply #2 on: April 03, 2011, 11:25:24 PM »
i am running that cam with stock vortecs edelbrock rpm intake,and edelbrock 600 carb,long tube headers with flows the engine is very torkey and it turns quick no lag at all.3500 stall with 3.08 gears at 30mph i can drop it to first bust the tires loose and smokem through second no prob.very nice combination.

Offline 305chevy c-10

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Re: comp cams for 355
« Reply #3 on: April 04, 2011, 07:17:53 AM »
great ....do it have an noticable idle to it .or not.......ur truck automatic
Heartbeat of America yesterday's cheverolet
18T5C10

Offline 1980c10

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Re: comp cams for 355
« Reply #4 on: April 04, 2011, 07:34:38 PM »
Here are the dyno results from my engine with vortech heads, I think my cam has similar specs as your yours does.

specs: 350 .030 over
vortec heads, a/c delco platinum
fat top pistons, 9.7 ish to 1 compression ratio
crower torque beast cam (mild cam)
intake edelbrock performer, 1 inch open spacer
carb holley 670 avenger, jets: Changed to F-68 R-72   From the box: P-65 S-68
proform dist, msd streetfire wires.
vacuum adv connected
Balanced rotating assembly
timing adv: 31 degrees
rpm 3000-5500         
91 octane pump gas   

 Peak torque: 431.6 @ 4300
peak HP: 393.3 @ 5400

rpm         tq            hp
3000      401          229
3100      404          239
3200      409          250
3300      412          259
3400      414          268
3500      416          277
3600      420          288
3700      422          297
3800      422          305
3900      423          314
4000      424          323
4100      427          334
4200      431          345
4300      432          353
4400      431          361
4500      429          368
4600      428          375
4700      424          380
4800      420          384
4900      415          387
5000      409          390
5100      404          392
5300      389          393
5400      374          393
5500      374          392

Offline 305chevy c-10

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Re: comp cams for 355
« Reply #5 on: April 05, 2011, 09:09:41 PM »
yeah i like those specs that looks like a really torquey motor
Heartbeat of America yesterday's cheverolet
18T5C10

Offline 305chevy c-10

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Re: comp cams for 355
« Reply #6 on: April 24, 2011, 08:31:25 PM »
 is the comp cams  mutha thumper cam for flat tappet 355 a good torqey cam .......looking for something in with less than 550 lift 
Heartbeat of America yesterday's cheverolet
18T5C10

Offline jdhall144

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Re: comp cams for 355
« Reply #7 on: April 26, 2011, 10:04:16 PM »
Ive ran the comp xtreme 4x4 cam 270/278 duration 1800-6000rpm very torqy and strong midrange liked to be shifted at 5500 with 3.73 gears and 35"tires.Idle noticable not to rad though.Good cam though but i stepped up just cuz i love a choppy idle extreme energy 284/296 and changed gears to 4.56 and intake from rpm airgap to victor junior.Much better and the torque is still there but im sure the converter helps 3600tci.

 


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