Machine shop put the wrong cam in...so i need your help
06-14-2009, 10:17 PM
#21
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see this is where i am lost. I dont know ****. And it doesnt idle choppy or even remotely like it has a lopey cam. It sounds like stock motor.
06-14-2009, 10:20 PM
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This whole thing sounds wrong, I'm hoping the builder knew enough about engines in general that he matched the valve springs to the cam, whatever cam is really in there. If it sounds totally stock I wonder if its just he LT4 cam which only has a few more degrees of duration on it.
06-14-2009, 10:22 PM
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This whole thing sounds wrong, I'm hoping the builder knew enough about engines in general that he matched the valve springs to the cam, whatever cam is really in there. If it sounds totally stock I wonder if its just he LT4 cam which only has a few more degrees of duration on it.
06-15-2009, 03:56 PM
#24
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Ok so apparently i am changing the cam since thats what the guy that swapped my motor into my truck said today. He said that even though the machine shop dude says its the right cam, he doesnt think it and wants a new cam in it. So i called summit today and told them that i have a 210/215 duration at .050 .462/.470 intake/exhaust lift. I told them that i want to up it just a bit more than that so i can still use the remaining parts on the motor and so i only replace the cam. Well i got two choises and these specificcally say "LT1" in the description, so i know they have to work. So i need ur opinions.
heres the first:
Manufacturer's Part Number 07-501-8
Part Type Camshafts
Product Line COMP Cams Xtreme Energy Camshafts
Summit Racing Part Number CCA-07-501-8
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,200-5,200
Intake Duration at 050 inch Lift 212
Exhaust Duration at 050 inch Lift 218
Duration at 050 inch Lift 212 int./218 exh.
Advertised Intake Duration 264
Advertised Exhaust Duration 269
Advertised Duration 264 int./269 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.488 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.495 in.
Valve Lift with Factory Rocker Arm Ratio 0.488 int./0.495 exh. lift
Lobe Separation (degrees) 112
Intake Valve Lash 0.000 in.
Exhaust Valve Lash 0.000 in.
Computer-Controlled Compatible No
Grind Number LT1 XR264HR-12
Quantity Sold individually.
And the second:
Manufacturer's Part Number 07-502-8
Part Type Camshafts
Product Line COMP Cams Xtreme Energy Camshafts
Summit Racing Part Number CCA-07-502-8
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,500-5,500
Intake Duration at 050 inch Lift 218
Exhaust Duration at 050 inch Lift 224
Duration at 050 inch Lift 218 int./224 exh.
Advertised Intake Duration 269
Advertised Exhaust Duration 276
Advertised Duration 269 int./276 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.495 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.503 in.
Valve Lift with Factory Rocker Arm Ratio 0.495 int./0.503 exh. lift
Lobe Separation (degrees) 112
Intake Valve Lash 0.000 in.
Exhaust Valve Lash 0.000 in.
Computer-Controlled Compatible No
Grind Number LT1 XR269HR-12
Quantity Sold individually.
Both are Comp cams brand. Now heres my questions, i noticed that the second one has about the same duration at .050 but a higher valve lift than the lt4hot cam, does the difference in the valve lift make a lot of difference HP/Tq wise? And secondly, what type of numbers would i be looking at from the cam itself or RWHP for either one of these cams?
Reason i am not going to do a bigger cam is that i want a mild upgrade and if later down the road i want to do it again, i will do the heads and cam upgrade all together to do the big numbers.
heres the first:
Manufacturer's Part Number 07-501-8
Part Type Camshafts
Product Line COMP Cams Xtreme Energy Camshafts
Summit Racing Part Number CCA-07-501-8
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,200-5,200
Intake Duration at 050 inch Lift 212
Exhaust Duration at 050 inch Lift 218
Duration at 050 inch Lift 212 int./218 exh.
Advertised Intake Duration 264
Advertised Exhaust Duration 269
Advertised Duration 264 int./269 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.488 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.495 in.
Valve Lift with Factory Rocker Arm Ratio 0.488 int./0.495 exh. lift
Lobe Separation (degrees) 112
Intake Valve Lash 0.000 in.
Exhaust Valve Lash 0.000 in.
Computer-Controlled Compatible No
Grind Number LT1 XR264HR-12
Quantity Sold individually.
And the second:
Manufacturer's Part Number 07-502-8
Part Type Camshafts
Product Line COMP Cams Xtreme Energy Camshafts
Summit Racing Part Number CCA-07-502-8
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,500-5,500
Intake Duration at 050 inch Lift 218
Exhaust Duration at 050 inch Lift 224
Duration at 050 inch Lift 218 int./224 exh.
Advertised Intake Duration 269
Advertised Exhaust Duration 276
Advertised Duration 269 int./276 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.495 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.503 in.
Valve Lift with Factory Rocker Arm Ratio 0.495 int./0.503 exh. lift
Lobe Separation (degrees) 112
Intake Valve Lash 0.000 in.
Exhaust Valve Lash 0.000 in.
Computer-Controlled Compatible No
Grind Number LT1 XR269HR-12
Quantity Sold individually.
Both are Comp cams brand. Now heres my questions, i noticed that the second one has about the same duration at .050 but a higher valve lift than the lt4hot cam, does the difference in the valve lift make a lot of difference HP/Tq wise? And secondly, what type of numbers would i be looking at from the cam itself or RWHP for either one of these cams?
Reason i am not going to do a bigger cam is that i want a mild upgrade and if later down the road i want to do it again, i will do the heads and cam upgrade all together to do the big numbers.
06-15-2009, 08:03 PM
#31
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Secondly, i doubt i would get anything at all for anything thats in it. I meant he lifters are staying, they are comp cam lifters...so the cam thats in it probly is worth like 50 bux, and idont know what else i would sell.
06-15-2009, 08:12 PM
#32
Although this is my toy and having a huge cam would be nice, but i am just looking for something that has some good tone and gets me decent numbers. I mean the truck as is, is pretty fast. All i need is a little traction and its good to go. I just cant deal with this cam i have in it. The guy doing the swap is pushing really hard to put the smaller of the two i posted above in b/c in his words '' i dont need the larger cam''.
Secondly, i doubt i would get anything at all for anything thats in it. I meant he lifters are staying, they are comp cam lifters...so the cam thats in it probly is worth like 50 bux, and idont know what else i would sell.
Secondly, i doubt i would get anything at all for anything thats in it. I meant he lifters are staying, they are comp cam lifters...so the cam thats in it probly is worth like 50 bux, and idont know what else i would sell.
06-15-2009, 09:55 PM
#34
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What are you getting mpgs wise city/hwy? And u have a dyno sheet or RWHP rating? And how much was it to put all the new parts u have in it? I dont have alot of money and was wanting to do my rear and gears as well this year...but i doubt it now. And also, i have to reflash my computer so this cam would be in it and thats over 100 bux. I am not happy i gotta do this again.
06-16-2009, 03:44 AM
#36
Gas mileage is very reasonable, but I suck gas with the way I drive.
The parts I put into it:
Valvetrain
CC503 from Comp $303
Crane 10308 dual valve springs $170
Comp 1.6 NSA 7/16" Pro Mag rr's $290
ARP 7/16" rocker arm studs $40
Trickflow guideplates $16
Trickflow chromemoly 7.2" pushrods $87
Supporting mods
Professional Products 52mm TB
Pacesetter 1 3/4" LT headers
Pacesetter ORY
Stock Cobra 39# injectors
Stock SS K&N CAI
Stock SLP 2OTL
Suspension mods
Spohn chromemoly dbl adj. tunnel mount TA
Spohn dbl adj. poly/rod PHB
UMI tubular adj. poly/rod LCA's
UMI relo brackets
BMR 22mm rear sway bar
BMR 32mm front sway bar
SLP 3-pt SFC's
Hotchkis STB
Koni shocks
Sportline springs
17"x11" zr1's in the rear
Tune is from MadTuner
Car rides stiff and controlled, just the way I like it. Power is amazing. Starts low and pulls like a **** up til 6500 where I shift it regularly. I wouldn't hesitate to recommend this cam to anyone. I've driven the car some 10k miles already without issue. Lope is very nice, nothing crazy. You can watch clips on YouTube (I need a cutout...). Can't wait til I can bolt on some nice ported stockers to make my engine truely shine.
The parts I put into it:
Valvetrain
CC503 from Comp $303
Crane 10308 dual valve springs $170
Comp 1.6 NSA 7/16" Pro Mag rr's $290
ARP 7/16" rocker arm studs $40
Trickflow guideplates $16
Trickflow chromemoly 7.2" pushrods $87
Supporting mods
Professional Products 52mm TB
Pacesetter 1 3/4" LT headers
Pacesetter ORY
Stock Cobra 39# injectors
Stock SS K&N CAI
Stock SLP 2OTL
Suspension mods
Spohn chromemoly dbl adj. tunnel mount TA
Spohn dbl adj. poly/rod PHB
UMI tubular adj. poly/rod LCA's
UMI relo brackets
BMR 22mm rear sway bar
BMR 32mm front sway bar
SLP 3-pt SFC's
Hotchkis STB
Koni shocks
Sportline springs
17"x11" zr1's in the rear
Tune is from MadTuner
Car rides stiff and controlled, just the way I like it. Power is amazing. Starts low and pulls like a **** up til 6500 where I shift it regularly. I wouldn't hesitate to recommend this cam to anyone. I've driven the car some 10k miles already without issue. Lope is very nice, nothing crazy. You can watch clips on YouTube (I need a cutout...). Can't wait til I can bolt on some nice ported stockers to make my engine truely shine.
06-16-2009, 06:53 AM
#38
Geez man, you need to spend some time on the phone with someone well versed in LT1's. My brother runs the Comp Cam 501 in his Firehawk. Maybe, just maybe if you listen really close, you can kinda-sorta tell it has a lope to it. It is very subtle, and it takes a dedicated ear to hear it. You can run a much bigger cam without any fear of low vacuum, or bad idling, or no low-end power, etc.. Those myths and lies have been disproven time and time again.
Comp 503 224/230
Ai has stuff similar
LE has stuff similar
Just get a tune and you are all set. Yes they will work with stock head. Yes they will "lope" and turn heads. Yes the car will be driveable. Yes your brakes work. Yes they will all make excellent power.
Comp 503 224/230
Ai has stuff similar
LE has stuff similar
Just get a tune and you are all set. Yes they will work with stock head. Yes they will "lope" and turn heads. Yes the car will be driveable. Yes your brakes work. Yes they will all make excellent power.
06-16-2009, 12:59 PM
#39
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Geez man, you need to spend some time on the phone with someone well versed in LT1's. My brother runs the Comp Cam 501 in his Firehawk. Maybe, just maybe if you listen really close, you can kinda-sorta tell it has a lope to it. It is very subtle, and it takes a dedicated ear to hear it. You can run a much bigger cam without any fear of low vacuum, or bad idling, or no low-end power, etc.. Those myths and lies have been disproven time and time again.
Comp 503 224/230
Ai has stuff similar
LE has stuff similar
Just get a tune and you are all set. Yes they will work with stock head. Yes they will "lope" and turn heads. Yes the car will be driveable. Yes your brakes work. Yes they will all make excellent power.
Comp 503 224/230
Ai has stuff similar
LE has stuff similar
Just get a tune and you are all set. Yes they will work with stock head. Yes they will "lope" and turn heads. Yes the car will be driveable. Yes your brakes work. Yes they will all make excellent power.
06-16-2009, 01:03 PM
#40
yea well heres what i need to do, i need to convince the guy that i am wanting and needing that cam. He says all the time, the truck doesnt need that big of a cam, a smaller one will do fine. I am not going for all out racing or even the every weekend race, but i dont want this cam swap to be a waste like the last one.
And then tell him to install a CC503 with supporting valve train...