will any SBC hydro. roller cam fit a LT1.

 

don't think so...you need the dowel pin to run the water pump... or is it the opti...

been out of the lt1 for a while...i forgot

 

Negative, the nose is different.

Rich

 

So i have to buy a LT1 cam.
If so where can i buy a huge cam.

 

Where can I buy like a .630's cam for a LT1

 

Any major cam manufacturer will be able to grind a cam for you on an LT1 compatible core. How did you decide on 0.630" lift?

Rich

 

Yea really, how did you come up with .630?? I just started my car up the other day for the first time, I have a 236/248 duration .608/.578 cam and idling at 1100 rpm it's still loping along pretty good Just be sure you know what you're getting yourself into, not just throwing numbers out.

 

A lot of companies will custom grind for little if any more than what an off the shelf costs.

 

A old rule of thumb, not written in stone, is that for decent spring life in a street application to limit lift to ~0.600" This is less true than it once was, as spring technology has improved. It's still true if run-of-the-mill springs are used, but a set of premium quality springs (like the Comp 26000 series or the Manley NexTek) will cost in the $400 range but will provide decent longevity with high lifts. Another thing to consider is that most 23 degree small block street heads aren't going to benefit from lifts much over 0.600" anyway.

Rich

 

Thanks guys
rskrause, you are always fast to help. I like that.
How does a comp cam 242/428 .584/.579 sound
Im gonna buy a 250HP nitrous kit also if i find one at a good price.
Ive have done some test and this makes 554HP and 665 lb/fts. And the 236/242 .520/.540 made 544HP and 675 lb/fts. which would be more benefical. I have electric water pump, headers, .456 gear.

 

What kind of heads/portwork will you be running?

 

What is the LSA of those two grinds? How many miles do you plan to put on the car in a year?

Rich

 

not all that many miles.
236/242 .520/.540 LSA 112
242/248 .584/.579 LSA 113
I thinking more the first one because it seems the most radical and powerful
but i want your opinion and suggestions
Thanks

 

My suggestion is that you do a lot more homework on what parts you are going to get to compliment this cam before you buy anything. Sounds to me you are just throwing numbers out, that is a good way to get a mis-matched car that you aren't happy with. You need to investigate and familliarize yourself with-

1)What kind of head (stock casting, Air Flow Research, Trick Flow), what kind of porting, and what kind of intake you will need to match up with it (LT1 or LT4). I hope you are not planning to run a cam that big on stock heads, if so you are just throwing your money away. You could accelerate quicker and have a much more streetable car with a better matched, smaller cam.

2)What RPM range you will realistically need you rev your motor to to take advantage of the cam. If close to or over 7200 rpm you will need an aftermarket engine control system, the stock computer will not go past 7200 rpm.

3)What valvetrain components you will need to complement this cam- roller rockers, springs, guideplates (?), pushrods, lifters, retainers, locks.

4)What engine bottom end components will be needed to stand up to the power/RPM characteristics of your motor (pistons, rods, crank, bearings and yes you will want 4 bolt mains)

Sorry if I'm jumping to conclusions here, but from being around this site for a while I've come to be able to realize a few things. I've read a lot of posts similar to yours, and 99% of them are the same- the poster is focused on one part (in this case a cam) and have no idea what other modifications need to be done to the motor, or what other areas need to be addressed. Please don't ask for us to spell out the 4 areas I mentioned above that you need to look at. Not to be an ***, but no one has enough time in this thread to explain to you the ins and outs of hi performance engine building. Use the search feature on this site and familiarize yourself with the 4 areas above, and you will pick it up really quickly. They key to a successful combination is research, and knowledge. Good luck.

 

What do u think rskrause.