BigKID

iTrader: (5)

I have been talking with Jason at Texas-Speed about a custom grind in the special they are running right now. I need some advice from some of you cam guys about some numbers. I curretly have all the bolt ons (intake, headers, exhaust, pullys, edit), a yank tt300 and dont plan on any head work. I am also an occasional N2O user. They have a 212 single pattern and also have a 212/216 split patter but the lift has to say under .535. I want to gain a lot in midrange and up top but dont want to spin the motor much over 6K. I also want to retain what lowend I currently have for light towing and highway driving. So how does a 212/216 .528/.530 112 sound? How much advance would I need to keep the power under six grand? I am also waiting on him to get back with me on the lobe profile and am hoping it is close to the comp xe lobes. So any suggestions/thoughts on this?

whitt1

The 212 single pattern sounds like a sweet setup and with the 212 exhaust lobe,the cam would peak in the 5700-5800rpm range.A great street setup that wouid make more usable hp than the 212/216.I think the 216 exhaust lobe would probably move the peak up another 200rpm but you would lose some lowend.

Slowverado

220/220 with .535 lift on a 114...just out of curiosity, why don't you want to spin the motor that high?

BigTex

iTrader: (16)

If it is a custom ground cam, why cant you get any duration numbers you wanted? Lift is a variable of the lobe profile, so it will be slightly different with duration.

I'd be tempted to have this ground for a 5.3 and see how it responds:

210/214, .556 .559 lift (XE lobes), 114 LSA +2 advance ground in.

BigKID

iTrader: (5)

I still dont know the lobe profile but he just said my max lift would be .535 :dunno:
Matt.. I am just thinking of longevity of the motor. With my mentatility, if it will spin up higher, I am going to try it and I dont want to really tempt myself like that and break something.
Richard.. I have seen you post those specs before so I am guessing you are fairly comfident that it would work well in a 5.3. Were would that cam shine? Mid-upperMid? I may be willing to be the gunnipig if you think it will work that well. Would the 114 give it a broader/flatter curve that a 112?

BigTex

iTrader: (16)

Yes, the 114 would make a longer flatter curve and a little better idle. That cam should shine in the mid upper rpms. I don't think you'd have to spin it past 6200 to get good benefits from it. I also think it will have good throttle response. You will need comp 918 springs. Just ask for those duration numbers, XE lobes (verify the lift), on a 114 with at least 2 degrees advance. I'd be tempted to go 4 degrees as this would help out the low end at the expense of peak HP.

Snake Eater

The guys at Comp cam help line gave me good advice on the 212/218-.522/.529-114. Its an extreme rpm for LS1s and its supposed make 45-50 more HP in the 5.3, and is great for NOS because of the 114. And you can use the stock valve springs, although the 918s would be a little safer.

BigKID

iTrader: (5)

I have been thinking about that one too but with the XE lobes (that one is on HE lobes). Here is what Paul at Thunderracing sent me:

The 212/218 would be a great car for a truck with your mods. We can do a Comp 212/218 .520/.527 112lsa or we can do the more aggressive lobes with a 212/218 .558/.563 112lsa. We've done the lower lift cam on a 114lsa in several 5.3s with great results. It will keep good low and mid power with a very extended topend over the truck cam. Hope this helps...