N2DP2QT

iTrader: (13)

well guys i used to have a 383c.i. motor till a valve spring problem got into my oil pump. my cam specs on this motor were 248/254 647/647 on a 113. and the heads were LS6's with bigger valves. the car run great with this combo. i was pleased. just curious as to what yaw would recommend for this next set-up? it is gonna have a vic jr. ETp225's, and 418 c.i. the compression is 11.9 and all this is going through a 3050lb camaro with a TH350 w/transbrake, moser 9" that is lightened everywhere possible. the converter is a vig 4400. any help would be appreciated. it is just that i have made a few calls and people are telling me cams that i used to run in my old heavyweight 6speeded 346.

njc.corp

even the old cam u say u had is still a fair stick for your next 418 project-

N2DP2QT

iTrader: (13)

that is the thing, i don't want an ok / fair one. i want a radical setup

silver01z06

talk to someone like predatorz or patrick g, or maybe comp etc. you say you want radical and alot of people think they do till see what that is really like. be ready for a harsh car.

ONEBADWS6

iTrader: (22)

Port your Vic jr first, then get the heads flowed with the intake and whatever TB setup your using attached. That will tell you what lift to run. Then go 258-264 on 110

N2DP2QT

iTrader: (13)

thank you sir. i haven't ported the intake any. and the heads flowed 338 intake 240 exhaust is what texas speed said.

Sharpe

iTrader: (7)

I think we he said "flowed" he's talking about finding out at what lift they made those peak numbers. Then, you would want to get a cam with a lift appropriate to those findings. Could be wrong. I'm no expert by any means.

N2DP2QT

iTrader: (13)

oh i gotcha, i have the flow sheet. and thwy are above 309cfm intake @ .500 lift and make there peak between .650 and .700lift. the exhaust is 226 @ 500 and doesn't quit gaining cfm all the way through

njc.corp

okay-but my understanding is that the bigger stick u go-the harder it gets to find tune-

how was the old cam in driving and idling wise?

if it was harsh u would think the next one u want to put in would be even worse-


looking by what u got in head wise and comp ratio-u are doing better then most-

also what u chasing in hp and torq? daily driver-weekend car-

i reckon the above? is a key to a good camshaft selection process-imo

N2DP2QT

iTrader: (13)

the cam that was in it gave me no problems at all. I tuned it myself with HPtuners. I had a tune at one time by a speedshop in LA that i ended up junking and going back with my tune. and i drive the car a descent bit. i put 7k on my last setup before i got a valvespring. and that 7k was within 4 months. streetability is what you can deal with. my car has a hard *** aluminum kirky, and no power steering or a/c. i can deal with alot. and i am not shooting for any certain hp/tq numbers. i just want 9's on motor and 8's on the kit.

N2DP2QT

iTrader: (13)

i had a cam quote of .66x/.66x 251/259 114+4 earlier that supposedly works well with this combo??? any thoughts guys

silver-mod-o

iTrader: (15)

that cam should do really well in that many cubes... er... at least what you want it for... be ready to spin that stroker to the moon to get the power out of it though. the LSA of that cam should like the bottle a little better as well...

Patrick G

iTrader: (14)

You cannot use the same valve events for a bigger motor with a single plane than you did with your old motor. Single plane intakes as a general rule respond with an earlier intake valve opening and an earlier close than what a FAST or LS6 intake would want. The exhaust valve close will need to be later to properly feed the intake during the overlap cycle. Generally, the net result of this is a much narrower LSA than what you're running now.

Try 247/251 .656/.660 109LSA +4.

ONEBADWS6

iTrader: (22)

Mine is a 110+0.

gtovan

For a single plane setup, I'd go 255/260 on the intake add 4/6 degree more on the exhaust on a 106+0 LSA. .630"+ lift.

N2DP2QT

iTrader: (13)

awesome guys. the pistons should be here soon, and i will let ya know what cam and the power numbers it puts down within a month and a half i hope. yaw have all been real helpful.

N2DP2QT

iTrader: (13)

also will this cam still be a descent nitrous cam?

Patrick G

iTrader: (14)

It would be good to around 150 shot. For anything 200 shot or greater, you'll need to start opening your exhaust valve earlier. 6 degrees earlier for a 200 shot, 8 degrees earlier for a 300 shot.