I'm thinking changing setup with :

* LE2 heads (already ordered)
* 52 or 58 TB
* 32 injectors

i will still run my hot cam kit on the set up for months so i need some advice with such set up :

1) i'm doing 320 rhp now. What gain might i have
2) will my springs handle the extra loads they might have from bigger valves from the LE2 heads, knowing i keep my actual (Hotcam)cam
3) i think buying ACCEL 32 injectors from summit. Are they good ones or shall i buy some others ? are 32 enough ? too big ?
4) i might change to something like a CC306 sometimes, will the set up will still be good enough for it.

thanks for answer

 

52mm TB should be just fine. The 58mm TB bring more trouble than they're worth most times.

I wouldn't get the Accel injectors. Get some Ford or Racetronix injectors. 32# should be enough. You can go 36# if you want to give yourself more room.

Are the heads coming with the 918 springs on them or what? Shouldn't have to change springs if you don't change the cam, but I would while they're off. Just make sure you check the PR length.

If the springs are good enough, then everything else should be good for a cc306.

 

ok if 52 is enough i beleive i should better go to a bored stock TB.

For the injectors, i haven't seen 32# or 36# racetronix or Ford at Summit. Where can i find some ? (with easy overseas shipping).

The heads will come with valves only. I'm saving money on springs (just because i can't affor all at same time)

Any idea of how many rwhp i should get with this stuff ?

 

www.racetronix.com

http://thunderracing.com/catalog/?ac...vid=4&pcid=163

What springs do you have? If you're going to anything other than LT4 valves, you need better springs. There's no point in risking anything in the valvetrain. Just think, it operates at twice the RPM of the rotating assembly.

Also make sure you get chromemoly, .080" wall PR, since I'm preaching about a good valvetrain.

 

My entire fuel system is Racetronix and it is very good. I would recommend it to anybody.

 

hum. I have the springs they give in the Hotcam kit. i've seen many post telling these spring are just really good for an Hotcam (and not good enough for a bigger cam). I'm suing them without any problem. i just wonder about possible heavier valves on the LE2 heads (i don't know if they are really heavier : bigger yes, heavier = i don't know).

 

You really should have Lloyd put the (918) beehives on the LE2's. You will be better off in the long run.
That's a good question about the larger valves, I wonder how much more the Ferreas weigh over the stock valves?

 

hum. true i don't really know if i might change those springs even if i have to wait for others mods then

about racetronix injectors : i wrote them and they can't ship oversea to me. Any vendors can ?

 

He probably has a ton of those springs at his shop and it wouldn't take any extra time to put them on.

The LT4 valves were also lighter than the LT1 valves, so they're not great on LT1 heads anyway. It's a good setup if ALL LT4 stuff is used, but once you start changing things, the reliability goes down.

 

I think you meant valve train moves at 1/2 engine rpm. (piston goes down Intake piston goes up compression piston goes downpower piston goes up exhaust so engine went around twice and cam rotated ONCE.



However, you're correct skimping on the valvetrain is foolish.

MIke

 

sorry ... haven't seen the thunder racing link.

I'm checking.

Does anyone selling a stock TB bored to 52 ?

 

about injectors : on the thunder racing site :

max flow SVO are 30#
min flow racetronix are 37#

i was thinking optimal was 32 for my setup. any opinion on which one should i better go ? SVO 30 or racetronix 37 ???

 

SVO are rated for a different psi, so you have to adjust it to whatever you're running. Too big is better than too small.

30# should be good for you. Make sure to get it tuned.

 

For a hot cam I'd just run a set of budget LE1 heads for 750$. You get a fully assembled head and you will see a nice gain from it with the cam. A set of Ford racing 30# injectors will be about 220$ and the heads 750$. Not bad but you are going to need some other goods to install these.

 

the LE2 heads have already been ordered ... and i have projects for the future about a bigger cam. I just don't want to do the same error i've done with the cam on the heads (take it too conservative and have regrets then and have to just buy all again).

About the SVO, i've seen then far over 300 $ ??? where do you find them at 220 ????