Honestly, that's completely incorrect info.

The F13 come 4 degrees advanced and will peak at around 6200 rpm. You shift it at around 6400-6500 max.

My F15 (236/239) was only ground with 2 degrees of advance and it peaked at 6600 in a 346ci motor.

The cam that's currently in my car is retarded 6 degrees to make it peak later since it's a small cam in a big cube motor.

Mike

 

Actually, if he spent time reading the amount of bull**** at LS1Tech, he'd be even more confused.

 

Yep. That's the one.

It works perfectly on the stock heads and will work even better when you add a set of heads down the line. It's perfect for both NOW and LATER.

In MY opinion, the TR224 is too small for a heads/cam application because it peaks too early and doesn't fully utilize the extra amount of power that you can make with a good set of heads.

Simply put: You run out of cam with a 224 when you add heads.

 

lol. I posted over there and I have received NO useful information.

The good people at Camaroz28.com ftw.

Anyways, I'm not a total cam noob. I did a lot of the work on my LT1 and I have a very good understanding of dynamic and static compression, duration, lift in realtion to port size, etc. I'm by no means advanced, but I am familiar with the basics.

I am VERY new to the LS1 world. I wanted to gain familiarity with the different setups out there so I can make good decisions, thats why I ask these questions.

Back to the subject: Final gearing is difficult to determine. I was considering eventually stepping up to a 4.10, but that would be waaaaay in the future. I'm very comfortable with the 3.42 in my M6 (this is my manual car as well). I have also considered 3.73 in the past, but everyone seems to discourage that. So its stay 3.42 unless i decide to commit to 4.10 i suppose.

 

Yep. The F13 will work fine with the stock 3.42s, but I'd recommend getting a 4.10 with a 6-speed for more fun

My buddy has been daily driving his F14 Vette for the last 20,000 miles in the last year without a problem.

 

I like the 4.10s in the 6-speed because it makes 6th gear actually usable. The 3.42s make it hard to use 6th under 70-80 mph.

 

I say that your rear gear selection depends on your plans for the car.

If you're going to stay at near-stock power, I'd say 4.10 all the way. The problem is that with 4.10 gears and a stock rev limiter, you're limited to 115.3mph in the quarter (unless you want to shift to 5th gear, which is generally not considered a good idea with respect to minimizing your ET). If you're willing to increase your rev limit to 6500, you can go 120.9mph without shifting to 5th.

So, figure out how fast you want to go on your days at the strip, and figure out if you care about shifting to 5th gear. Figure out what the extra 1-2 highway mpg with 3.73s is worth to you.

Once you know those things, it should be pretty easy to decide.

 

What? I use 6th at 50-55mph all the time (about 1100 rpm). There's not much power, but the car can accelerate well enough, and it's fine with the cruise control set, and I don't mind dropping a gear (or two, or three, or four) when I want better acceleration.

 

You'll find the trend in the US LS1 world at the moment is towards overly large cams. People are running MS3, MS4 and TRex cams in daily drivers. In Australia they're running narrower LSA, larger lift, shorter duration cams and making great power too. Then you also need to take into consideration how often you're willing to play around with valve springs. More agressive cams will wear them out quicker.

You need to decide if these large cams are good for you or not. Go onto another board or even a different local section of the same board and you'll get more MS3 recommendations than F13 or vice versa. It just depends on whats popular locally.

Another thing to consider is that you usually only hear the good reports on a specific grind. A friend of mine went from the stock like GT2-3 cam that was making 400 hp w/ported heads (from GTP) to the F13 with the same heads and only made a couple more hp. Long story short he is back to the GT2-3.

Why post about this on tech when you can search and find a plethora of data to answer your question for yourself. Thats probably why you didn't get help over there. When a forum sees this same question asked daily it tends to get ignored.

 

wow great information guys, thank you so much.

It sounds like I am going to have to make some choice on driveability vs power and make a few sacrafices. I'm still paying for the car, so I don't want to commit to an all out power-based setup just yet.

A little more then a Mild cam that I can run on stock heads, but potentially later upgrade with heads that has a smooth mid-rpm powerband would be preferred.

Jake - that was some very helpful information for the strip, thank you.
Kraest - you have me sold on the 4.10s earlier than I wanted to be I still think I'm gonna run with the 3.42s for another year or so, maybe upgrade them when I do heads next season.

It seems like this thread is turning into the 224 vs the F13. Is there something in the middle ground that would satisfy my preferences, or should I commit to a setup featuing one of those?

Thanks again!

 

Guess I was off a little. I should know better than to assume...

Anyway, did you see this thread Wheelman?

http://www.ls1tech.com/forums/showth...ight=224%2F228

 

Once again, I don't think the 224 is a great choice because you're leaving alot on the table once you do heads. You want to do a good cam for both now and later. The F-13 is honestly very drivable and makes great power cam-only and heads/cam.

With that being said, a cam in the middle of the two that also has seen great success (I've seen it hit over 450rwhp with a heads/cam setup) would be the F-11.

Mike

 

F-11 or any 226 or 228 grind with decent lobes. Different lobe designs is another area I'd suggest you investigate before buying a cam.

 

I agree, you mentioned that you might add a set of Patriot heads later on, are you aware that they sell a 226/226- 585/585 with a 112 lsa that is pretty popular and a very good price of $ 280 or somewhere close to that price. That is the cam I bought, but I still have not gotten around to installing it yet ,but I have heard it in someone elses car and it sounded awesome.

 

I'm running a 226/226 grind. It isn't Patriot though its a GTP420.