What pistons, rods, and crank to use?

tx2000gt · Apr 12, 2006

I'm helping my buddy out building his engine, and I just wanted to know what people are using for engines bored .020 over.

Oh, he's looking to be using an HP TT setup, so he'll be pushing some high numbers when he lays into the boost.

DropTopPony · Apr 12, 2006

i'm building with a stock forged Cobra Crank, Manley Forged H beam Rods and Manley Forged 23cc dished pistons. Bought everything from www.vtengines.com

hognutz · Apr 12, 2006

I think I would run cobra forged crank, manley rods, and manley, ross, or diamond pistons.

you could also call companies like MPH, DSS, steen, foxlake, VT and get their take on all of it.

some of the companies make thier own rods and cranks.

have you priced out just buying a complete short block vs machining the stock block and building it?

03ghoststang · Apr 12, 2006

what the two post above me put cause i dont want to wirte it out...

but make sure that they are forged internal's none the less

tx2000gt · Apr 12, 2006

I'm getting a Teksid block out of a Mark VIII, and just boring that .020 over and machining it. Anothing thing, .020 over is 302ci right?

DropTopPony · Apr 12, 2006

tx2000gt said:
I'm getting a Teksid block out of a Mark VIII, and just boring that .020 over and machining it. Anothing thing, .020 over is 302ci right?

no its like 284ci

tomustang · Apr 12, 2006

yeah it's 284

DropTopPony · Apr 12, 2006

roger roger

Gearbanger 101 · Apr 12, 2006

I kept the stock crank since it good enough for all but the most serious horsepower or high RPM applications and added Diamond Pistons and Manley rods. Good for 600hp.
Bought them here....www.modularperformance.com

jstreet0204 · Apr 12, 2006

Gearbanger 101 said:
I kept the stock crank since it good enough for all but the most serious horsepower or high RPM applications and added Diamond Pistons and Manley rods. Good for 600hp.
Bought them here....www.modularperformance.com

I am in the process of doing the same thing. I just got a romeo short block out of a tbird and getting ready to send the block to the machine shop. Just out of curiosity, how much did you pay to rebalance the crankhaft?

Gearbanger 101 · Apr 13, 2006

jstreet0204 said:
I am in the process of doing the same thing. I just got a romeo short block out of a tbird and getting ready to send the block to the machine shop. Just out of curiosity, how much did you pay to rebalance the crankhaft?

From what I understand, there is no need to rebalance the crank shaft. The rods and pistons are what need to be balanced to one and other with a modular assembly and since I bought them as a kit, it was already done for me. Apparently, the only time the crank needs to be balanced is with a stroker set up.

01Steeda · Apr 13, 2006

Gearbanger 101 said:
I kept the stock crank since it good enough for all but the most serious horsepower or high RPM applications and added Diamond Pistons and Manley rods. Good for 600hp.
Bought them here....www.modularperformance.com

thats what I did also... like he said good till 600 and I dont plan on going far over 500

TweekedGT · Apr 13, 2006

I have a stroker crank (Cobra i believe), Manley Platinum Series Forged Pistons, Manley Stroker Forged I Beam Rods. All from the Infamous Seanhyland Motorsports. Everything is great for me so far except I don't know what clutch and flywheel to buy for the 8 bolt crank.

Gearbanger 101 · Apr 13, 2006

TweekedGT said:
I have a stroker crank (Cobra i believe), Manley Platinum Series Forged Pistons, Manley Stroker Forged I Beam Rods. All from the Infamous Seanhyland Motorsports. Everything is great for me so far except I don't know what clutch and flywheel to buy for the 8 bolt crank.

6375-2 99-01 Cobra, 03 Mach 1, 8 bolt, 11" clutch $119.95
http://www.seanhylandmotorsport.com...d=553&osCsid=1dd2753b6a1551589ae1d1eab845f49f

....and a SPEC Stage II. Good for 520lbs ft/tq.
http://www.specclutch.com/

Problem solved.

tomustang · Apr 13, 2006

TweekedGT said:
I have a stroker crank (Cobra i believe), Manley Platinum Series Forged Pistons, Manley Stroker Forged I Beam Rods. All from the Infamous Seanhyland Motorsports.

Damn why are you building a broken motor to begin with?

WOT · Apr 13, 2006

Go to VT and buy a complete balenced rotating assembly. Then it just has to be dropped in.

jstreet0204 · Apr 13, 2006

WOT said:
Go to VT and buy a complete balenced rotating assembly. Then it just has to be dropped in.

They don't have an option with the cast cranks, so their cheapest rotating assembly is 1900 plus you have to add $200 extra for balancing.

jegg · Apr 13, 2006

DropTopPony said:
i'm building with a stock forged Cobra Crank, Manley Forged H beam Rods and Manley Forged 23cc dished pistons. Bought everything from www.vtengines.com

Hey Bob,
Are you gonna a stock block? Just wondering...i want to beef up my bottom end also but i want to use the stock block

WOT · Apr 13, 2006

TweekedGT said:
I have a stroker crank (Cobra i believe), Manley Platinum Series Forged Pistons, Manley Stroker Forged I Beam Rods. All from the Infamous Seanhyland Motorsports. Everything is great for me so far except I don't know what clutch and flywheel to buy for the 8 bolt crank.

Mike get the Spec stage 3+ clutch and lightweight flywheel. The clutch is suppose to be as streetable as the stage 2 but have the holding power of the stage 5.

And as for the rotating assembly yes it is $200 extra but you have to have the stock crank rebalenced anyway. May as well start out with a brand new one and have the ability to wind it past 7000 RPM. The stock crank is not save past 6500 RPM.

It is your money in the end might as well spend it wisely.

tx2000gt · Apr 13, 2006

Wait, then what do I need to bore out to get a 302 out of the Teksid?

What pistons, rods, and crank to use?

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