i still have a few thing so get planned out, i am doing this build right now on a tight budget because my engine is burning oil and has ~150,xxx miles on it...

so now to my plan, i bought my brothers engine that he just took out of his z28, it had around 56,xxx miles on it but he bought a 383 long block for his car.

i plan to re-use the pistons and just hone the cylinders, as well as some parts from my engine in my car right now.
i am going to have another crank i have turned and install new bearings as well as cam bearings.

so far here is what i plan.
parts i am about to purchase:

comp cams 7808-16 Pushrods, High Energy, Steel, Heat-Treated, 5/16 in. Diameter, 7.195 in. Length, Universal, Set of 16

fel-pro CS9966 Gaskets, Conversion Set, Chevy, Small Block Gen II, Set

fel-pro MS95580 Gaskets, Manifold, Intake, Stock Port, LT1 Chevy, 5.7L, Set

speed pro 139M-10 Main Bearings, Competition Series, 3/4 Groove, .010 in. Undersize, Tri Metal, Chevy, Small Block, Set of 5

speed pro 8-2555CP-10 Rod Bearings, Performance, .010 in. Undersize, Tri Metal, Chevy, Small Block, Set of 8

mr.gasket 5716 Head Gaskets, Ultra-Seal, 4.100 in. Bore, .026 in. Compressed Thickness, Chevy, Small Block LT1

GM performance 3848911 Oil Pump Spring, High Pressure

ac delco opti-II

PRW 1.6 roller tip rockers for 7/16" stud( to match heads)

EGR block off plates

what i have already:

CC306 in car I plan to re-use

comp cams valve springs/retainers...

ported and polished oem heads (pocket port, short turn radius, port matched, 7/16" arp studs w/ guideplates)

ported out stock lt1 manifold to match heads

stock lt1 std. vol./std. press. oil pump as well as a melling m55 (both new,which is better?)

i currently have a pcmfor less tuned obd2 pcm and plan to switch to an obd1 and possibly 42lbs. injectors and also have pcmforless do the tune.

Now,....
what i need to know is what is a good set of rings to order for the stock pistons, i do plan to spray nitrous on this motor, i know i am limited to what the stock piston can take, that and i am trying to not go too high on price as well, so what is a good ring set?

and also any other suggestions/imput or changes that should be made, i plan to order parts hopefully sat. morning?

 

I would get a n2o piston rings for the stock hypers if you plan to spray. I just dont know if aftermarket rings will work on stock pistons. I would try and call Diamond and JE to see if there nitrous rings will work on a stock piston. Maybe call up N20 outlet and ask for their advice.

Unless these heads of yours are going to really move some air i see no need for injectors that big. More like 30lbers or 36's. I would get a intank fuel pump before injectors with a wet shot. Which im guessing your going to use. The cc306 has always done well on juice.

Use the stock oil pump with a spring mod. Drop the factory oil cooler. Its useless.

 

as far as the pump, that is what i plan to do, i am going to use the high press. spring, just didn't know if one of the pumps i already had was better than the other????

and as far as injector the reason i am going so big is ein spring i am planning on starting a stroker which i plan to use either ai or le ported heads, and i know that the stock injectors won't be enough and don't want to have to buy another set next year, will the 42# cause a poor idle or not be tunable with stock ecu????

 

42# injectors are fine as long as your pcm is tuned for them.

I'd use the melling pump just because I like aftermarket parts more than stock stuff.

If you plan on spraying then you really should look to get new pistons. I doubt you will find aftermarket rings for the stockers.

Also, wait until you can measure the PR length before buying a set. That gasket is about half the thickness of the stock one and you will probably at least need to resurface the deck and/or heads.

Using the stock rods is fine, but make sure you replace the bolts with ARP pieces. Those are the weakest link in the bottom end.

 

Hastings and Mahle make OEM replacement LT1 piston rings. #2M4626


Stock pistons and stock rings will take quite a lot of nitrous, (175hp jetting), with good tuneups. The stock piston seems to act like a forged piston when the tune up is bad, (the ring lands gas-off) and I have never seen a stock LT1 piston shatter like a cast piston, (even though it is a cast piston).
Just my observations......

 

thanks seawolf06!

good thing i had posted on here i had forgotten about the rod bolts, which ones should i go with? i know arp, but a certain part # i should look for?
would part# ARP 134-6005 be a good choice to go with?

And as far as the heads they have been resurfaced and totally rebuilt.

And as far as the rings go is there a certain brand or part# that i should get, i am unsure of the thickness' on the rings, and i guess i should probably try and go with a moly or plasma moly top ring right?

i am not trying to cheap out on the rings, but i don't want to spend on piston rings for nitrous when my piston won't even handle it, i would like to spray a 150shot, and i would like to stay at around $100 for the piston rings, so what do you guys think?

 

I guess you should get the Mahle rings he posted. That's the only stock rings I've seen for our cars other than GM parts. You will want to file them for sure to make sure you're good for the gas.

Try searching the forum for the arp part number, or check summit. I can't remember which ones I used on my first build.

 

will Total Seal CR9090-5 be a good ring set?


Brand: Total Seal
Product Line: Total Seal CR Classic Race Piston Rings
Part Type: Piston Rings
Part Number: TSR-CR9090-5
Bore (in): 4.000 in.
Bore (mm): 101.727mm
Top Ring Included: Yes
Top Ring Thickness: 5/64 in.
Second Ring Included: Yes
Second Ring Thickness: 5/64 in.
Oil Ring Included: Yes
Oil Ring Thickness: 3/16 in.
Oil Ring Tension: Standard
Oil Ring Tension Rating: 20 lb.
File Fit: Yes
Gapless: No
Top Ring Material: Ductile iron
Top Ring Facing Material: Plasma-moly
Second Ring Material: Cast iron
Second Ring Facing Material: Cast iron
Oil Ring Material: Stainless steel
Quantity: Sold as a set.

 

If those are the correct thickness then I guess they would work. Like I said, make sure you file them correctly.

 

ok, as far as piston rings here is what i plan to go with, the ones listed the first time were not the correct size, but summit said that they could order me these which is the correct size for stock bore WITH the plasma moly top ring, i am going to place my order this afternoon, but i thought it would be useful incase someone else was looking for the same thing, only thing is the have to special order them from tatal seal and they won't been ready for another 2 weeks...

Brand: Total Seal
Product Line: Total Seal CR Classic Race Piston Rings
Part Type: Piston Rings
Part Number: TSR-CR6264
Bore (in): 4.000 in.
Bore (mm): 101.600mm
Top Ring Included: Yes
Top Ring Thickness: 2.0mm
Second Ring Included: Yes
Second Ring Thickness: 1.5mm
Oil Ring Included: Yes
Oil Ring Thickness: 4.0mm
Oil Ring Tension: Standard
File Fit: No
Gapless: No
Top Ring Material: Ductile iron
Top Ring Facing Material: Plasma-moly
Second Ring Material: Cast iron
Second Ring Facing Material: Cast iron
Oil Ring Material: Stainless steel
Quantity: Sold as a set.

 

That is a good find, (the Total seal stock LT1 sized rings).
The Hastings or Mahle would probably be special order also from your local parts dealer but you never know, they might have some in stock. Note that the stock rings are also plasma moly top ring.
So it looks like 3 brands of stock GM LT1 rings are available,
Total Seal CR6264
Hastings 2M 4626
Mahle 2M4626

All of these are plasma moly top ring, (for future reference).

Karl Ellwein

 

You need to have the pistons checked before committing to using them, the skirts could be collapsed and the ring lateral clearance may be too loose. If the motor was kept stock and well maintained they should be ok with just a kiss hone and new rings, but if the tune was out at all or if it was overheated you may have some piston problems.

You also do not want those 3/4 groove bearings, just use a clevite "P" series bearing.

 

I'd also want to make sure I had good PTW clearance.

 

Fast Forward to present day...

I've found the hasting sets, but looking at Mahles website I've found 41616CP as the replacement ring set: [page 121] http://www.development.itskentodd.co...cat_piston.pdf

Then there are the GM part numbers for the rings 12528817 and 12528818 [.005 over]. I'm guessing the .005 set is for file fitting?

Thoughts?

-Dustin-