henry172

iTrader: (2)

I shipped my heads off to lloyd for his le1 port job; I think I made the best decision for my set up. I am also rebuilding the bottom end to stock 350 with Speed Pro Z8KL2256F30 pistons, arp rod/head bolts, Clevite bearings and moly rings, with my lt4 hot cam set up. I think I should be making plenty of hp for a reliable daily driver car; I can't wait to drive the car when I am all done with it.

SoxXpupPeT

iTrader: (34)

good move. Another 2 months and i should be sending my heads out for eithre LE2 or LE3 port job... I cant wait for that

Lawhead

iTrader: (14)

With the LE1's have you looked into the CC503?
Its a real torquey cam

Torque on the road = fun

Just a suggestion looking forward to seeing results on a LE set up Im going LE2 with my build with a custom cam. Guess I'll see how it goes

henry172

iTrader: (2)

Yes the cc503 or even a custom grind would be nice, but I am trying to keep the price of my build low; I already have the hot cam set up from my old motor. I am just going to stick with the hot cam, and when someone at the track or on the street wants to know what I have I will say just a stock lt1 with the lt4 hotcam. I have emailed Lloyd many times about my build; he seems to be great guy, even responded to a email at 12am. The average engine/head guys would not even waste their time responding to the numerous emails that I have sent Lloyd.

jlpz

iTrader: (8)

I'd dish out the extra $300 to get the custom cam..you could sell you're cam for 100.00 or so..and just pay the 2 bills...IMO..

fergymoto

iTrader: (129)

It's not just the cost of the cam that he will have if he changes from the Hotcam. If he is running LT4 springs now he will definitely have to replace those, probably the retainers, locks and locators, and to do it right he should be getting 7/16 studs and new rockers to work with them, new pushrods if he i still using stock ones, etc. It would turn into a $900 deal to change cams

Lawhead

iTrader: (14)

The LE heads come with all that minus the Rockers and push rods and not 100% sure on the studs

henry172

iTrader: (2)

My studs are arp, and I have comp pro mags but they are SA and my push rods are stock. I am going to pick up some new push rods any way. But I am trying to get away with the stock injectors. I think with the hot cam I just might be OK, but any larger on the cam and I think I will also need new injectors.

henry172

iTrader: (2)

I have a question for you guys, will a stock rod hold up fine for my set up? I am not going to run nos or boost.

pr_lt1

Im going to do the same but with Ai so im salivating that moment. Good luck people

bowtienut

iTrader: (1)

Yes, they're more than capable. The big ends need to be re-sized with the ARP bolts torqued in place

henry172

iTrader: (2)

O.K I should be good to go then. Here are the pistons I am going to use http://www.summitracing.com/parts/TRW-8KL2256F30/

wht97ws6ta

I have a practically new cc503 cam that i will sale you at a deal if your interested. it has about 10 minutes of run time on it, never seen the highway. Sat in the engine for about 6 months before i pulled the engine. It has a few rust spot on a couple of lobes but they are just cosmetic.

96capricemgr

iTrader: (1)

How much does that piston weigh and what impact does that have on the rods?

Wicked94Z

iTrader: (26)

stop making people think

1961ba427

iTrader: (26)

I get what you guys are saying....and respect both your opinions.....but I think those pistons are great for what they are. A nice economical upgrade from stock. They have been used for 40 years. Proven performers....and with coated skirts now. I bet the OP is like me....not willing to pay double for lighter pistons for a "hopefully" 400 rwhp build. Sure there are better (and much more expensive) options, but not requirements.

96capricemgr

iTrader: (1)

If you could find a piston that was stock weight you could maybe skip the couple hundred dollars for balancing?????

I would not run that piston with stock rods, rebuilt or not. Best I can tell that piston is 610grams and the stocker is 532ish. Yes the stock rods are decent pieces but I would not ask that much of them given what the consequences of failure are. If you permanently keep the HOT cam you wont turn much rpm, but if you want to upgrade to cam that can make power to a higher rpm later I would worry.

I know you said it is a driver, but with the 7000rpm pcm limit it is possible to have a cam that makes nice lowend, peaks mid 6000s and makes power right to 7000. I am not saying upgrade now, I am saying plan for the possibility.

MICHZ28

I don't care how hard you look you aren't going to find pistons that will not require a rebalance.

Could you please spec me this magic cam you speak of.

1961ba427

iTrader: (26)

I see what you are saying and it makes sense that you could get the weight close. I hadn't thought about skipping the balance before (except on stock replacement/overbore rebuilds) but I know from experience that it would work. I know plenty of people (not myself) who have built big blocks with very heavy forged, large domed TRW's (going from cast dish or flattops) and didn't get the engine balanced and they are working fine after years of street/strip use. I do realize it's an important step and affects bearing life....as well as power production. I just wasn't thinking about it in an application such as the OP's mild build.
Very true about planning ahead and building it to handle upgrades in the h/c dept later.
Also, your post got me to thinking about the stock rods.....are the PM rods that bad? I have zero experience with them as far as engine building. Sure I have had cars with them, but they are stock. I have had plenty of experience both with small and big blocks and factory forged rods. I wouldn't worry one bit about a stock forged rod swinging trw pistons to 7,000 rpm with good bolts. I've had alot of stock internal cast everything small blocks that saw that kind of rpm regularly along with daily driving and are still running.
Personally, from now on I'd just buy some 4340 Scat I-beams that use cap-screws instead of bolts because the cost isn't much higher than rebuilding stock with ARP bolts.

96capricemgr

iTrader: (1)

The speedpros come out to 15% heavier.

Since you guys put little faith in my knowledge lets have SStrokerace educate you a little.
http://www.camaroz28.com/forums/showthread.php?t=395325
If you get real ambitious plug 610grams into those equations he post in post number 18 those numbers also fail to reflect the further effect of vacuum on the intake stroke which would be a very hard thing to put a number too.

Far as cam specs to make decent daily driver torque and power to 7000rpms, I know enough to trust real professionals, and have experience with enough cams in my car and friend's car to know who can do such things.