Spec a cam...

So... im getting closer to finishing the motor and with the recent upgrade of springs good to .660 im looking at going with a bigger cam than what i was going to run which was the 228r.
Motor will be an iron 5.7 stock rods/pistons, P&P'd 862's, haven't got the heads back yet so I dont know the flow yet but I should find out soon, And no more than a 150 shot. Probably going to run at least a 3500 stall also

I was thinking the tsp 233/239 on a 112lsa
Or an MS3 on a 112lsa

all ideas and questions welcome! :thanks:

either one of those would be nice!

take 5 min and fill out the cam spec at comp they will get back to you in a day with the perfect reccomendation and best of all its freeeee!!!

Comp won't give the specs for an optimal camshaft, only what they have on the shelf or in their database already. :thumbdown:

they spec ed me an custom grind that you cant just get off the shelf just about 3 days ago. not to argue but i can past a copy of the email if you want.

that would be a first for me to hear of. Post it up. :thumb:

They spec'd me out a cam and it was off the shelf, POS IMO, doesn't run like it should since my 408 only put down 400 HP to the dyno running their cam suggestion. The tune was pretty much spot on after a live tune.

comp couldnt spect a cam for a stock engine if you ask me!!

to the OP, that 233/239 is a tight duration but deffinately nice ;) what size lift you looking for? good to hear 3500 would be the least, i would go 4k ;) then again its gonna depend on what youre after with your setup ;)

David, lift im not really worried about since the springs are good to .660 but if they heads flow lets just say 300 at .600 lift then it would be overkill to run a .630 lift if the heads can't handle it.
Im going to at least run a 3500 stall probably closer to 4k though.
Its going to be a street/strip/every other daily.

Quote:

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Originally Posted by f4tal

David, lift im not really worried about since the springs are good to .660 but if they heads flow lets just say 300 at .600 lift then it would be overkill to run a .630 lift if the heads can't handle it.
Im going to at least run a 3500 stall probably closer to 4k though.
Its going to be a street/strip/every other daily.

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if your heads flow lets say 300 at .600 i would go with something in the hood of 612 BUT if i was you i would spend the 25.00 and get patrick to spect the cam to your needs and your mods, its part of matching everything up. your stall will be determined somewhat on the cam size ;) but yeah more then likely a 36-4k stall is gonna fit ya well

well this is a pasted email i got. I gave him this info 4000 lb truck, 4.10 with spool, 4l80e (willing to go up to 3000 stall) custom suspension will dead hook in the rain, no emissions, no ac, no power steering or brakes, stock intake, stock injectors, 345/55/15 dragradials about 31 in tall, stock 317 heads, about 9.5.1 compression .
Hello Robert,

I recommend a custom grind camshaft. I have listed the specs below.

Part #: 54-000-11

Grind #: 3724/3725 HR112+2

Duration @ .050”: 228/230

Lift w/ 1.7 Ratio: .588/.592

LSA: 112

Advance: +2



I recommend the 26918-16 springs with this cam. The computer will require
a tune. If you have any questions, let me know. Thanks.



Autumn Hawkins

Technical Consultant

Comp Performance Group

Quote:

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Originally Posted by robznob11

well this is a pasted email i got. I gave him this info 4000 lb truck, 4.10 with spool, 4l80e (willing to go up to 3000 stall) custom suspension will dead hook in the rain, no emissions, no ac, no power steering or brakes, stock intake, stock injectors, 345/55/15 dragradials about 31 in tall, stock 317 heads, about 9.5.1 compression .
Hello Robert,

I recommend a custom grind camshaft. I have listed the specs below.

Part #: 54-000-11

Grind #: 3724/3725 HR112+2

Duration @ .050”: 228/230

Lift w/ 1.7 Ratio: .588/.592

LSA: 112

Advance: +2



I recommend the 26918-16 springs with this cam. The computer will require
a tune. If you have any questions, let me know. Thanks.



Autumn Hawkins

Technical Consultant

Comp Performance Group

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That is the exact cam that they recommended for me as well. Just been waiting to save up the money.

ms3 is a nice cam, also look into the polluter from tick performance

Quote:

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Originally Posted by robznob11

well this is a pasted email i got. I gave him this info 4000 lb truck, 4.10 with spool, 4l80e (willing to go up to 3000 stall) custom suspension will dead hook in the rain, no emissions, no ac, no power steering or brakes, stock intake, stock injectors, 345/55/15 dragradials about 31 in tall, stock 317 heads, about 9.5.1 compression .
Hello Robert,

I recommend a custom grind camshaft. I have listed the specs below.

Part #: 54-000-11

Grind #: 3724/3725 HR112+2

Duration @ .050”: 228/230

Lift w/ 1.7 Ratio: .588/.592

LSA: 112

Advance: +2



I recommend the 26918-16 springs with this cam. The computer will require
a tune. If you have any questions, let me know. Thanks.



Autumn Hawkins

Technical Consultant

Comp Performance Group

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you planning on running forced induction? that compression isnt gonna help ya if ya running NA neither will the converter.


i hope you didnt pay for that cam spect for one its a very popular camshaft for ls1 motors ;) if i remember correctly


edit: nevermind i see where comp spected it lmfao

Why isn't that converter gonna help him either? That's the size converter I'm gonna run as well. Although my compression is going to be 10 to 1

Quote:

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Originally Posted by Smoky02

Why isn't that converter gonna help him either? That's the size converter I'm gonna run as well. Although my compression is going to be 10 to 1

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guessing here: probably cause he would like to get the power to the ground alot faster than what a 3k would do for him, hes got a nice cam but needs supporting mods to take full advantage, dont cut yourself short make it all work together, not against ech other ;) plus his heads are stock and hadnt even mentioned TR & locks or even harden push rods :(


dont mind me, just when i mod a vechicle i wanna get the most out of it as possible ;)

Quote:

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Originally Posted by skeet

guessing here: probably cause he would like to get the power to the ground alot faster than what a 3k would do for him, hes got a nice cam but needs supporting mods to take full advantage, dont cut yourself short make it all work together, not against ech other ;) plus his heads are stock and hadnt even mentioned TR & locks or even harden push rods :(


dont mind me, just when i mod a vechicle i wanna get the most out of it as possible ;)

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which i agree fully with you Skeet. to many ppl buy to small of a converter for their setups, to many ppl dont run enough gear for their setups then to many ppl dont run enough compression for their setups

what it comes down to is ppl need to be truely honest with what they want first out of combo then mod around it. Big cams need compression,gears, good flowing exhaust, large stall

Keep it up! im not done learning yet :LOL:

did you miss the fact that i have 4:10 richmond gears moser axles and a mini spool, also running 1 3/4 primary long tubes with 3" collectors and 2.5 exhaust, aero chambers and dumped behind the cab, Im running a tray mounted aganst the cowl hood for a ram air effect even though it is not supercharged, Yes i will be stepping up the pushrods chrome molly ones, by the way i pulled a 496 stroker package out of this truck to run a ls motor i do know a little about building hotrods , and yes i do plan on stepping up the heads to 799 or 243 in the future that may give me 30 hp across the board but the cam will work with eather comp ratio, and one last thought I talked to texas speed today and they recommended that i not go past a 228r because I will give up too much bottom end with such a heavy truck, I told comp when they speced the cam i was looking for a fat and flat tq curve not top end hp that way i can be far out and they have to reel me in, oh yea i also told them this is more of a power tour type ride it aint gonna be any fun if i cant trust it on a long haul, I have hade plenty of race cars that bearly squeek by inspection and can cruse to sonic and back, pretty much spit out all other rides but i want this one to be a hot rod/ cruser with a big set of nuts.(if you go too large with a converter you loose driveability not to mention you burn down your tranny in traffic I mean if i wanted it right id put a trans brake in it not to mention i probably would not run an overdrive behind the motor)

Quote:

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Originally Posted by skeet

guessing here: probably cause he would like to get the power to the ground alot faster than what a 3k would do for him, hes got a nice cam but needs supporting mods to take full advantage, dont cut yourself short make it all work together, not against ech other ;) plus his heads are stock and hadnt even mentioned TR & locks or even harden push rods :(


dont mind me, just when i mod a vechicle i wanna get the most out of it as possible ;)

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Quote:

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Originally Posted by robznob11

did you miss the fact that i have 4:10 richmond gears moser axles and a mini spool, also running 1 3/4 primary long tubes with 3" collectors and 2.5 exhaust, aero chambers and dumped behind the cab, Im running a tray mounted aganst the cowl hood for a ram air effect even though it is not supercharged, Yes i will be stepping up the pushrods chrome molly ones, by the way i pulled a 496 stroker package out of this truck to run a ls motor i do know a little about building hotrods , and yes i do plan on stepping up the heads to 799 or 243 in the future that may give me 30 hp across the board but the cam will work with eather comp ratio, and one last thought I talked to texas speed today and they recommended that i not go past a 228r because I will give up too much bottom end with such a heavy truck, I told comp when they speced the cam i was looking for a fat and flat tq curve not top end hp that way i can be far out and they have to reel me in, oh yea i also told them this is more of a power tour type ride it aint gonna be any fun if i cant trust it on a long haul, I have hade plenty of race cars that bearly squeek by inspection and can cruse to sonic and back, pretty much spit out all other rides but i want this one to be a hot rod/ cruser with a big set of nuts.(if you go too large with a converter you loose driveability not to mention you burn down your tranny in traffic I mean if i wanted it right id put a trans brake in it not to mention i probably would not run an overdrive behind the motor)

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LMAO, trying to school Dave on whats what lol

Rob, do you have that cam in your truck yet? Does is have a smooth or choppy idle? Also are you going to be running it in a 5.3 or 5.7?

no don't have it yet Its going in a lq4 6.0 and i don't know what your after but 112 lsa will be choppy 114 will be smooth im going with the choppy one because it is a 68 hot rod truck i want it to sound like an old school hot rod:)

Quote:

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Originally Posted by robznob11

no don't have it yet Its going in a lq4 6.0 and i don't know what your after but 112 lsa will be choppy 114 will be smooth im going with the choppy one because it is a 68 hot rod truck i want it to sound like an old school hot rod:)

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LSa is only part of what makes a cam choppy and lopey

a few members on this site have cams in the 115 and they hit hard, i have a 115+2 and its lopey

duration has alot to do with it


if youre looking for a 68 hot rod sound then look into the thumper LS cams.

Yup - a lopey idle is caused entirely by valve overlap. The amount of overlap is determined by LSA, duration, and lobe acceleration ramps. Lower LSA, longer duration, and slower ramp rates will contribute to a lopier idle.

i was just informing you that on this perticular cam a 112 will have more lope of chorse more duraration means more lope but again we cant miss all the people who get to much lift and duraration because they like the sound and then someone comes along with a mild cam and smokes em. the most important thing anyone can do is spec a cam that works for there aplication towing, racing ,drag, cornercarver, hot rod, get one that preforms well and gives you power in the rpm band you will spend the most time in, then play with the lsa for sound just know that it will also affect preformance too, its all a mater of what your willing to give up and where you comfortable or sweet spot is:)

Thanks