I was thinking of adding a little nos kit about 125 hp I have the 296/304 f10 Do you think i sould change my cam to a 110 or 112 lsa? Or will this cam be fine? thanks for your help...mike

Mike,

It will do fine, as long as your fuel system will support both the cam and the NO2. Don't worry about LSAs until after 300 BHP of spray....

UDHarold

thanks harold...mike

Originally posted by 69ralleygreen:
I have the 296/304 f10 Do you think i sould change my cam to a 110 or 112 lsa? You already have 110 sep

cam card says 108...mike

Mike,

Is this a UD cam or a Lunati? If it is UD, there will be a line(the 3rd one of data) that states Lobe Seperation. What is that?
If it is UD, there will be the 3rd line from the bottom, which says "Install cam at ___ ATDC". For a 110 LSA, it would be 104, for a 108 LSA it would be 102.
I do not mess with the Lunati cards, but they grind the cams 4° advanced. So a 108 int CL means a 112 LSA, and 106 int CL means a 110.
Let me know exactly what the timing card says. I will be out for a number of hours, but will answer back this evening.....

UDHarold

If the cam is stamped f10 that would usually mean 110.
BTW...when are you running again at Moroso?
I can`t place your car in my head, can you describe it?
Went Friday, might go this Friday as well.

Your car runs 10.0`s right?

maybe your lookin at cam spec,s for a cam installed at a 108 centerline ? for a degreed cam..

Ordered the cam from steve like harold recommended at lunati, Cam card says: part# 402b1lun its listed in the new cams on the lunati website http://www.holley.com/HiOctn/ProdLine/Products/IEC/IECC/Chevy7.html lobe seperation 108 centerline is 102, 6 degrees advanced(so this means 114 lsa?), Ex closes ATDC 21.5 Ex opens BBCD 69.5 In opens 29.5 BTDC In closes 53.5 ABDC Harold let me know were this cam works best ...mike

Originally posted by BigRed-L72:
If the cam is stamped f10 that would usually mean 110.
BTW...when are you running again at Moroso?
I can`t place your car in my head, can you describe it?
Went Friday, might go this Friday as well.

Your car runs 10.0`s right? I will be back there around march almost done with this new motor, hopefully i can dip in to the 9's with spray and the automatic, My car is ralleygreen with cragar sst's its mostly on the street, Ran it a few times at moroso, I will get in touch with you next trip up there...mike

lobe seperation 108 centerline is 102, 6 degrees advanced(so this means 114 lsa?), LSA (lobe seoaration) is 108.

Alright, Im starting to understand this, The cam card says a centerline of 102 degrees will make this cam 6 degrees advanced so the lsa will be 108, Would this cam work better another 2 degrees? Or should i leave alone, By lunati advancing the cam 6 degrees, what will the rpm range be...mike

With the cam in the engine around 101° to 104° ATDC Int CL, the power band is 4000 to 8000, with peak power around 7000 with a good set of ported heads, peak about 6700 with street-ported heads.
The cam should still work OK with a 125 HP shot. If you go to 250-300, it may get a little 'squirelly', and a 112 LSA would give much better control.

UDHarold

What the h*** does changing the intake centerline have to do with the lobe separation...the LSA is built in the cam :rolleyes:

Mike,
If the card says 108 separation & the cam is stamped f10 I would be degreeing both the intake and exhaust lobes to see what you actually have if the cam is already in.
If it ain't call around & see if someone in your area doesn't have a Cam Doctor or CamPro Plus & get it measured.
As was stated, most cams that end in f10 would be a 110 separation.
Could be you got the wrong cam card or the cam is mismarked but it would certainly be nice for you to know what you actually have in case you want to change.
Doesn't do much good to call your favorite cam guy with specs if they ain't right :(

This is exactly why I check all cams before they go in the engine,,, I hate "surprises",,,,