hey guys so it looks like had a lifter go out. lota chater pulled it apart and seems to have taken the cam out with it. i think im going with the ls7 lifters but i dont know what cam i should run, i dont know a lot about cams. right now im runing the stock rockers but i would like to get some rollers when the old lady gets a job. ported heads 6psi dont know the valve springs but the guy who ported my heads said they were in really good shape. i dont have alot of money right now (the wife lost her job) so i need somthing cheap i was thinking a used lt4 cam or somthing i dont know let me know what you guys think thanks Brian. ps sorry for the bad spelling.

 

Look around for a cc305 on a 114. They were pretty common a few years back and you might find one cheap.

http://cgi.ebay.com/ebaymotors/lt1-C...Q5fAccessories

 

here is a blower cam that was setup to run 6-8 psi on a stock bottom end with stock heads and intake

Comp Cam 224/236 502/520 114 LSA $230.00 Shipped




This cam will out perform the cc305 hands down.

Steve.

 

that ebay cam is a custom thats a little smaller on the intake side then a 305 right? i was really hoping to find a used cam for around 100 since i gota spend another 125 on lifters and 100 on a timing set and gaskets but ill keep you in mind. am i going to have problems with my valve springs or anything with any of these cams?

 

yes.

FWIW, a cc503 can be had for about 150, and you can run kmotion k-750s with them, those are about 120/set. just shim them .045

 

theres some one selling a cc502 on a 112 for 100$ and theres a 503 on a 112 for 150on here will they work?

 

the 503 will work alright. Will it be optimal? not quite, will it work good? yes.

 

Ramair you got a pm.

 

I run a cc305 with 10+psi with cnc'd heads and full hooker exhaust and its a tire shredder with 3.73 gears and a 3k stall. Out of boost, is feels like a decently modified lt1, little rumble with slight lope at idle. Just enough to draw in your prey. Its a great off the shelf cam that doubles as a blower cam. You should be able to find one for 150 or less. With 6 psi though, I would stick with something on a 114lsa, or to be more "correct", something without a lot of overlap, since you'll bleed off boost. I had a cc306 with about 6-7 psi and a 150 shot. I swapped out the 306 for the 305, and swapped head units to an s-trim with 10 psi. The smaller cam and 10psi boost feels faster than the 306 with 150 shot and 6psi. The downfall of a cc305 cam in my opinion on ported heads is the lack of lobe lift. You need to get 1.6 rockers to get you in the mid .500 range to make the most out of ported heads.

 

I finally got rid of the 502 -it is an ok boost cam and for someone hurting for money a good option. I'm going from a 70mm to an 83mm so I wanted to be able to spin the motor a little higher.

Stocker is always an option in a bind.

 

true, you could get a stock lt1 cam for peanuts, but I think if yer replacing the cam, you gotta move forward. If you could get one for free, then buy some 1.6 rockers to get your lift numbers up, you could make out pretty good. There was a guy selling a boost cam on ls1tech that had nice lift numbers and decent duration like 227, but that was 2 weeks ago, check over there.

 

thanks for the help guys i think now im looking for a 305 cam or maybe a cc503 but O don't know some one offered me this cam for 175 525/.541 lift (w/1.5 rockers); 227/239 dur. @ .500 lift; 114 LSA seems like a nice cam (a nice big cam) don't i don't know what its characteristics would be like.

 

Thats the one I was talking about. It might be a tad much for what yer doing. I was considering using it for my setup because the added lift might net me another 10-20 hp. From my exp and what ive read, it seems the larger cam doesnt help much at low boost levels. I would probably suggest the 305 cam or the 503 cam at most for efficiency purposes.

 

alright guys so i picked up an 305 compcam and a set of ls7 lifter on ebay 200 shipped cant beat that. well see if there in as good of shape as he says they are. now i need valve springs that can support the 510 lift. also i may want to run 16 rockers so i should get something that can support that will i have any retainer to valve seal problems? thank you for your help?

 

I highly recommend 16 rockers. Any less and all the valves won't open.

Comp recommends the 26915 or 26918 spring. I believe the 918 is used for 1.6 rockers but you may want to call and double check.

http://www.compcams.com/Cam_Specs/Ca...csid=1102&sb=1