f13 or f14 - Page 8

gyrene2003 · 03-01-2009, 12:13 PM

who makes the LSr lobe? Comp?

silver-mod-o · 03-01-2009, 01:04 PM

Yep, LSr, LSk, XEr, XE etc... Bunch of different lobes to choose from.

gyrene2003 · 03-01-2009, 01:05 PM

i just sent comp an email, see what they say about lobes and a cam card.

gyrene2003 · 03-01-2009, 01:06 PM

whats a nasty set of lobes?

Raise · 03-01-2009, 04:04 PM

Quote:

Originally Posted by gyrene2003

whats a nasty set of lobes?

xer lobes are pretty agressive. but once again, lobe design will dictate valvespring life. futral motorsports uses their own lobes...called cam motion lobes. they are known to produce great great curves while being one of the least aggressive lobes. hence, you get great power and long spring life. but back to your "how nasty can i possibly get" question, xer lobes are definitely pretty mean. i wanna say the lsk lobes are also aggressive

Raise · 03-01-2009, 04:15 PM

Darren, I know its kinda late now, but I really think instead of posting a public question on here asking for suggestions, you should seriously spend some time on here reading up on heads and cams. i know youre new to the specs and you really dont know what all the numbers mean...but you should before you go picking a setup...especially since you want to do it right the first time. if you talk to all the big dogs, i guarantee very few of them got it right the first time. you can ask all the people you want, but in the end, it has to feel right to you. it takes trials, and trials take time and work. the trials make it fun though, cuz it helps you learn exactly whats going on instead of someone else building what they think might be your perfect setup. im not trying to be negative bro, but as your friend, i really think it would be good for you to do some research on cam and head specs. learn what they mean, how each affect power, results from different setup trials, and what combination will put you where you want to be. then again, not everyone has a desire to learn all the details...some just want a badass car they can say they own. once again man, im not trying to be negative, but look at how many questions and suggestions have been thrown around this thread. if you have some time in the next week or two, do some in depth reading. i remember when i first got into this hobby, i started with the cam guide sticky in the internal section. i dunno if you have read that, but jrp did an excellent job writing that up. anyway, just lookin out for you buddy. give me a call sometime this week if u wanna chat

gyrene2003 · 03-02-2009, 05:15 PM

well, been doin some reading. Also, so talkin too the wife, she is telling me if i wanna get the AFR heads to wait another 3 weeks, so that is a new possibility.

gyrene2003 · 03-02-2009, 06:04 PM

so looking at the AFR 225cc with the 62cc or 72cc combustion chambers vs the ls6 stage 3 ported heads, i guess for big power gains this really is a no-brainer, wondering if the cam ben had perscribed would still be a good fit for these heads. This is all keeping in mind, like these AFR heads say, that i am aware i would be loosing alittle bit of low-end tourqe. I undersnd this and am fine with it. I am again building this car for serious track results.

quiet_storm98 · 03-02-2009, 09:16 PM

Quote:

Originally Posted by gyrene2003

well, been doin some reading. Also, so talkin too the wife, she is telling me if i wanna get the AFR heads to wait another 3 weeks, so that is a new possibility.

i'll sell you my afr's man

. By the way i have a custom spec'd cam that is inbetween a f13 and f14 (230/234) and i love it. It has great street manners and pulls hard up top. Well anyway good luck in your search man

gyrene2003 · 03-03-2009, 12:40 PM

Definatly interestead in the heads if the price is right, but I am looking for a set-up that will give me alot of mid too upper rpm power, like with the ls6 heads

Raise · 03-03-2009, 02:36 PM

Quote:

Originally Posted by gyrene2003

Definatly interestead in the heads if the price is right, but I am looking for a set-up that will give me alot of mid too upper rpm power, like with the ls6 heads

as stated on the phone, i do think its important to pick the best set of heads for YOUR application, and the cam selection is secondary and completely based on your head selection. while i do agree that afr/tfs make some of the best heads on the market, are they the best heads for you and what you are looking for? from all that ive read, afr and tfs make an unbelievable street head with great torque and mid range numbers. im not totally sure if there is much difference on the top end, but i believe you can more than get by on a good high flowing set of heads at around the $1500 mark...and spend that extra $1000 on drivetrain or suspension mods. as you are building a drag car, theres more to rear suspension than the phr and lca (t/a, shocks, etc) so thats another area to keep in mind and tackle when the time is right. anyway, lets do some more research and pick your heads...then spec out a cam for you. call me later

gyrene2003 · 03-03-2009, 05:29 PM

talkin too ben on the phone and he was advising me on the TF 215 heads. Those turn out too be the exact set of heads, now that i have looked up the old pm, that shawn from Vaspeed was telling me to get. Ben was suggesting that for the application i will be using, those would be a good fit for me. Although, i do like the idea of getting a set of heads for $1000 cheaper and putting the money towards a new rear.

Raise · 03-03-2009, 10:49 PM

Quote:

Originally Posted by gyrene2003

talkin too ben on the phone and he was advising me on the TF 215 heads. Those turn out too be the exact set of heads, now that i have looked up the old pm, that shawn from Vaspeed was telling me to get. Ben was suggesting that for the application i will be using, those would be a good fit for me. Although, i do like the idea of getting a set of heads for $1000 cheaper and putting the money towards a new rear.

just curious...why did they advise those heads for your application?

gyrene2003 · 03-04-2009, 07:26 AM

Well shawn told me those were my best option for making the kind of power I want to make and ben is telling me that they are the best heads all around, flow good down low and up top. Better flowing than the ls6 heads.

Raise · 03-04-2009, 08:37 AM

Quote:

Originally Posted by gyrene2003

Well shawn told me those were my best option for making the kind of power I want to make and ben is telling me that they are the best heads all around, flow good down low and up top. Better flowing than the ls6 heads.

hmm...im just wondering why the smaller intake ports if youre looking for top end power

gyrene2003 · 03-05-2009, 07:59 AM

Jammie, apparently I do need new rockers

Raise · 03-05-2009, 08:16 AM

Quote:

Originally Posted by gyrene2003

Jammie, apparently I do need new rockers

well, there's another 500 bucks

gyrene2003 · 03-05-2009, 08:54 PM

definatly goin the expensive route. eh, fug it.

LS1 Sounds · 03-09-2009, 11:11 AM

You can't go wrong with an F13 cam. It is a great all around cam, I also had one in my old red car. Works well with stock casting heads, and also aftermarket if you decide on the AFRs. How worried are you about your transmission? Most stock 4L60E's don't like to live long when shifted above 6,500 RPM. RPM and heat = death for the 4L60E. Keep in mind that big cams will be peaking in that area or higher, and will want to shift closer to 7k. With Jamie's old red Z, that's another reason we kept the cam kind of on the small side and it made >400 rwhp through an SS3600, and only peaked at 6,100. My best times with the F13 (114 lsa) and stock heads came with a 6,400 RPM shift point; the trans life was another reason I wanted this cam.

Vengeance Racing and Rapid Motorsports both sell NASTY TFS heads/cam combos. If you get AFRs, I would check with Tony Mamo or Patrick G for a custom spec cam. If you want something off the shelf, the TSP 2.5 5.3L heads and MS3 combo is nice. Their 5.3L head has a smaller combustion chamber than unmilled LS6 heads, which results in higher static compression ratio and the smaller runners also increase port velocity for better torque. But who cares about low end torque, that's what the 3.90's and SS4000 are there for! For BIG cams or forced induction, the larger runners of the LS6 head and aftermarket castings are better.

It's all about the combo and what you want to do with the car. There are always trade-offs, either way you go: small cams usually have better torque and drivability but give up peak HP, large cams gain peak HP but usually give up both of the others. If you have the money to spend and want big power, go TFS heads and get the right cam to work with them.