Expected power from CC305 cam?
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Expected power from CC305 cam?
On paper the CC305 looks like it should make very similar power to the hot cam. It is 220/230 .510/.510 114 with 1.5 rockers to the Hot Cam's 218/228 .525/.525 112 with 1.6 rockers. I am going to help a guy tune a CC305 car and I was wondering what kind of power to expect. It's got the cam and headers, very mild head work (valve job type thing, no porting) I'm thinking in the 320-340 range. Does that sound reasonable?
The poor guy dyno'd the car and it made 285 HP, it was also so rich that it went off the scale. I'm sure there is a lot of power to be found.
The poor guy dyno'd the car and it made 285 HP, it was also so rich that it went off the scale. I'm sure there is a lot of power to be found.
Thread Starter
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Originally Posted by bogus
I would think there is more in that cam than 285.
unless the 1.5 rockers are stamped steel junk and woefully out of adjustment...
unless the 1.5 rockers are stamped steel junk and woefully out of adjustment...
Safety Car
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From: Charleston SC
a lot of the F-body guys have gone to the 305 in place of the HC because all things being the same such as R/Rs ect.. the 305 seems to make better power, not a lot better just better. I would think he should make a little more but 290-300 RWHP if the motor is bone stock with a stock exhaust would be about right for a F-body and I would expect 295-315 range for the corvette because we have a much better stock exhaust system.
OOPs didnt see the LTs and head work. with the 1.5s your HP numbers seem just about right
OOPs didnt see the LTs and head work. with the 1.5s your HP numbers seem just about right
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I'm not sure if he's running 1.5's or 1.6's. It certainly is way down on power. I know I made 336 with my cam and headers with the benefit of an electric water pump. The tune wasn't perfect either. I might could have gotten a few more out of it had I ever acquired the stuff to tune it. Unfortunately for my case I didn't buy any of the tuning stuff until I had the heads so I didn't know the full potential of the cam / exhaust.
His exhaust should be pretty free flowing, it has long tubes into an x-pipe into not much. I didn't crawl around under the car but the exhaust never exits fully out the back, no real room to run true duals on an f-body and maintain ground clearance.
If he's running 1.5 rockers I'd expect 320-330 range. If he's got 1.6's 330-340 shouldn't be out of the question. The increased lope seperation might hurt his peak HP, although it might give him some more torque. I guess we'll just have to wait and see. Oh he MIGHT have said it was actually a 355, I can't remember. There were a LOT of cars there and I can't keep them all straight.
His exhaust should be pretty free flowing, it has long tubes into an x-pipe into not much. I didn't crawl around under the car but the exhaust never exits fully out the back, no real room to run true duals on an f-body and maintain ground clearance.
If he's running 1.5 rockers I'd expect 320-330 range. If he's got 1.6's 330-340 shouldn't be out of the question. The increased lope seperation might hurt his peak HP, although it might give him some more torque. I guess we'll just have to wait and see. Oh he MIGHT have said it was actually a 355, I can't remember. There were a LOT of cars there and I can't keep them all straight.
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Thread Starter
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Originally Posted by bogus
I hate to suggest it... but was the cam degreed upon install?
All that keeps coming back in my head is when GlockLT4 has all his problems and found the cam was one tooth off.
All that keeps coming back in my head is when GlockLT4 has all his problems and found the cam was one tooth off.
RUKWKR, no it's not Chris's car. His has the Hot Cam and we were able to get the kind of power out of it we expected. The car in question was the maroon Z-28 owned by Jeff Pierce.
Burning Brakes
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From: Toronto Ontario
St. Jude Donor '13
A/f
Hi Nathan,
Just out of curiosity, when you say the car ran rich and was way off the scale; is the car's tune stock? or has it been tuned and consiquently too rich?
Victor
Just out of curiosity, when you say the car ran rich and was way off the scale; is the car's tune stock? or has it been tuned and consiquently too rich?
Victor
Le Mans Master
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Originally Posted by Nathan Plemons
Supposedly it had a mail order tune from somebody, I can't remember who he said. They missed the mark a little bit.
At 6-1 he should've put gas cans under the exhaust to catch all the unburned gas coming out.
Team Owner
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From: altered state
St. Jude Donor '05
I bet you get more avg. hp/tq. from the hotcam. More lift, tighter lobe separation. The 305 may pull a little harder upstairs though and extend the rpm band a bit. JMO
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Well at 9 a.m. Saturday we're gonna see what it'll do. I'm charging him $25 + $2 per HP up to 62.5 HP, anything above that is free. As such my maximum cut will be $150, of course he has to pay the guy who owns the dyno as well. Ultimately it might be pretty costly for him, but should still be cheaper than oh say an Ed Wright chip which I seem to remember costing some $350 for a flat out guess.
I figured a pricing scheme such as this was pretty fair. The $25 alone will cover my time because I enjoy doing this sort of thing yet if something is actually wrong with the car it won't break his bank. I'd hate for there to be some problem (like the cam out of time) and him have to pay me a fortune for me to tune it twice. It also gives me the incentive to get as much power out of it as I can.
If all goes well on Saturday I'll have $150 more in my pocket, it'll help pay for that Walther PPK I bought.
I figured a pricing scheme such as this was pretty fair. The $25 alone will cover my time because I enjoy doing this sort of thing yet if something is actually wrong with the car it won't break his bank. I'd hate for there to be some problem (like the cam out of time) and him have to pay me a fortune for me to tune it twice. It also gives me the incentive to get as much power out of it as I can.
If all goes well on Saturday I'll have $150 more in my pocket, it'll help pay for that Walther PPK I bought.
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2.5 hours until there is either one really happy kid who makes a ton more HP than he started with, or one really pissed off kid who's trying to figure out what is wrong with his car mechanically.
It is supposed to have the following specs:
CC305 cam on 1.5 rockers
heads had the ports smoothed down and a 5 angle valve job.
pacesetter long tubes.... no emmisions or cats
it is a 355 with stock injectors.
180 thermastat
It is supposed to have the following specs:
CC305 cam on 1.5 rockers
heads had the ports smoothed down and a 5 angle valve job.
pacesetter long tubes.... no emmisions or cats
it is a 355 with stock injectors.
180 thermastat
