too big a cam for stock heads?
Thread Starter
12 Second Club
iTrader: (1)
Joined: Mar 2008
Posts: 847
Likes: 0
From: North Phoenix, AZ
too big a cam for stock heads? so guys i have been researching the cam i have in my car as i was told by the shop i purchased it from that it would be good for a stock car and isnt a very big cam, well after finding out the info on my cam and reading up on the sticky about cams mine seems rather large. now correct me if i am wrong please but does this not seem like a decent sized cam? 263-276 .530 .540 LSA 113.
the car right now as it sits has a slp cai, asp UD pullies, a tune and a deleted muffler. (and of coarse all the supporting valve train components for the cam) i know i need long tubes believe me they are next on the list but they should be in within the next month seeing as my birthday is next month early.
i was also thinking that when i get the long tubes to get my intake and heads port matched by a local shop to see if my cam can really benefit from the extra breathing.
obviously im not an expert and am looking for some decent advice thanks!
the car right now as it sits has a slp cai, asp UD pullies, a tune and a deleted muffler. (and of coarse all the supporting valve train components for the cam) i know i need long tubes believe me they are next on the list but they should be in within the next month seeing as my birthday is next month early.
i was also thinking that when i get the long tubes to get my intake and heads port matched by a local shop to see if my cam can really benefit from the extra breathing.
obviously im not an expert and am looking for some decent advice thanks!
Thread Starter
12 Second Club
iTrader: (1)
Joined: Mar 2008
Posts: 847
Likes: 0
From: North Phoenix, AZ
ok well first off did you run that on stock heads ever? because that was my main question. second off did you run a stock converter at first, third why is my duration so high? i read that right off the cam card so im positive there was no error on my part but my duration @ .06 is 263-276 thats way higher than even the cc503.
Launching!
Joined: Mar 2003
Posts: 284
Likes: 0
From: Michigan
ok well first off did you run that on stock heads ever? because that was my main question. second off did you run a stock converter at first, third why is my duration so high? i read that right off the cam card so im positive there was no error on my part but my duration @ .06 is 263-276 thats way higher than even the cc503.
the heads are stock, with P&P.. but a have a friend that ran his with stock heads and it was almost the same as mine just smaller lift and duration, but on a 112LSA. and no converter i have an M6... but i think you would need to run at least a 2500 stall.. .unless you wanted to take it out of gear at the stop lights..as far as your duration.. im not sure why its so high. it must make power upstairs.. prolly like 4000 to 6800 maybe.. not sure
Thread Starter
12 Second Club
iTrader: (1)
Joined: Mar 2008
Posts: 847
Likes: 0
From: North Phoenix, AZ
Like said that is at .006" not .050" like you traditionally see. I have seen the specs on that Speed Inc. Caddy cam you have but do not recall them exactly but I think its ~212 on the intake at .050" and ~224 on the exhaust at .050" making it a cam on the smaller side of the spectrum. But for the record your cam is fine for your setup no worries!
Trending Topics
Thread Starter
12 Second Club
iTrader: (1)
Joined: Mar 2008
Posts: 847
Likes: 0
From: North Phoenix, AZ
Like said that is at .006" not .050" like you traditionally see. I have seen the specs on that Speed Inc. Caddy cam you have but do not recall them exactly but I think its ~212 on the intake at .050" and ~224 on the exhaust at .050" making it a cam on the smaller side of the spectrum. But for the record your cam is fine for your setup no worries!
, those numbers are at .006" and at .050 is it 212 and 224. but per your thread it says that the cc503 is one of the biggest cams to run on stock heads and this cam isnt too much smaller is it? iirc the cc503 is .537 and .544 and mine is what .530 and .540, i always thought the lift numbers were what made a cam "big" but please correct me if im wrong. LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
The "too big for stock heads" crap is a bit silly, look at what the stock eliminator guys do. They use stock lift but .050 durations that actually approach these .006 numbers you posted, catch is rpms, they use aftermarket management and go well beyond what our pcm or a stock shortblock can handle.
For reliability sake you want to keep stock shortblocks down to say 6500 or less, meaning peak power 6200 or lower. That is what should limit cam selection. Yes guys go 230+ degrees intake on "stock shortblocks" but that is risky due to rpm, some make it work but rebuilding "stock shortblocks". Some of them just don't rev high enough to make it really work, in which case they would have been better off with smaller.
for .006" number that does not look like a big cam, though the .050 numbers would be nice. The 113lsa would make it a good emisions cam but otherwise is reason enough to skip it.
For reliability sake you want to keep stock shortblocks down to say 6500 or less, meaning peak power 6200 or lower. That is what should limit cam selection. Yes guys go 230+ degrees intake on "stock shortblocks" but that is risky due to rpm, some make it work but rebuilding "stock shortblocks". Some of them just don't rev high enough to make it really work, in which case they would have been better off with smaller.
for .006" number that does not look like a big cam, though the .050 numbers would be nice. The 113lsa would make it a good emisions cam but otherwise is reason enough to skip it.
OK you posted the .050 numbers while I was typing. You are missunderstanding things, lift is not that big a deal, duration is because it impacts rpms needed.
I ran a zz4 cam for awhile which was 208/221 .474/.510 112 when I had cats on the car it was so mellow guys who knew it was there said it sounded stock. If you are prepared or flat out want a little bit of a noticable cam then you need to look at something with maybe a little more duration and depending on emissions testing maybe a tighter LSA.
I ran a zz4 cam for awhile which was 208/221 .474/.510 112 when I had cats on the car it was so mellow guys who knew it was there said it sounded stock. If you are prepared or flat out want a little bit of a noticable cam then you need to look at something with maybe a little more duration and depending on emissions testing maybe a tighter LSA.
Thread Starter
12 Second Club
iTrader: (1)
Joined: Mar 2008
Posts: 847
Likes: 0
From: North Phoenix, AZ
OK you posted the .050 numbers while I was typing. You are missunderstanding things, lift is not that big a deal, duration is because it impacts rpms needed.
I ran a zz4 cam for awhile which was 208/221 .474/.510 112 when I had cats on the car it was so mellow guys who knew it was there said it sounded stock. If you are prepared or flat out want a little bit of a noticable cam then you need to look at something with maybe a little more duration and depending on emissions testing maybe a tighter LSA.
I ran a zz4 cam for awhile which was 208/221 .474/.510 112 when I had cats on the car it was so mellow guys who knew it was there said it sounded stock. If you are prepared or flat out want a little bit of a noticable cam then you need to look at something with maybe a little more duration and depending on emissions testing maybe a tighter LSA.
but good to hear i was just reading thru another thread and noticed how similiar my cam is to the Crane 227 and other smaller cams with higher lift.
i really just need to get some long tubes on this baby and a decent stall converter.
