pushrods, conecting rods, pistons

no164ford

Registered User
Does anyone know what size push rods coy stage 1 cam uses? And what is a good afordable piston and conecting rod upgrade for a 90 sc? I will have a ported supercharger, porter heads with larger exhuast valves (not sure what size yet) custom 3" sc pipe dubble ic, mid lengh headers, custom 2.5" exhust, coy stage 1 cam, and some outher stuff I can't think of now.
 
Don't know about the connecting rods.

For pistons you can get stock replacement skirt coated Hyper pistons from Federal Mogul via their Sealed Power division. These come with full floating pins like the 94/95 engines had. About $28 each.

Then you can try to track down some 94/95 connecting rods on Ebay and have them re-worked a bit.
http://cgi.ebay.com/ebaymotors/ws/e...tem=7953331102&category=33623&sspagename=WDVW

And if you want to be really trick, you could get the uncoated pistons from Sealed Power (about the same price) and have your pistions sent out to someone to have Swaintech (http://www.swaintech.com/) coatings applied to the skirts and the piston tops.
 
Mike8675309 said:
Don't know about the connecting rods.

For pistons you can get stock replacement skirt coated Hyper pistons from Federal Mogul via their Sealed Power division. These come with full floating pins like the 94/95 engines had. About $28 each.

Then you can try to track down some 94/95 connecting rods on Ebay and have them re-worked a bit.
http://cgi.ebay.com/ebaymotors/ws/e...tem=7953331102&category=33623&sspagename=WDVW

And if you want to be really trick, you could get the uncoated pistons from Sealed Power (about the same price) and have your pistions sent out to someone to have Swaintech (http://www.swaintech.com/) coatings applied to the skirts and the piston tops.
What is the differance in the 94/95 connecting rods, and what do you mean about reworked?
 
94 rods might be like 20% stronger, cant tell by giving them a quick glance, you can get 351W truck/marine rods reworked I think, they can handle about 600 hp and maybe 400 or more with the car rods
 
i run 7.200" trick flow chrommoly pushrods with the CMRE stage 1 cam, from summit they are about $70, i also have 1.73 non adj roller rockers.

northern auto parts sells a kit for the t-bird comes with all the lower end stuff needed including pistons, cam and other goodies, but u might not need all that.
 
94/95 rods are full floating. Prior to that, only partial floating.

Reworking... Polishing the beams is supposed to be worth the effort, helps to remove stress points in the forged rod material established when the rod is created.
Here is a link about doing this.
http://www.chevyhiperformance.com/techarticles/74038/

I don't believe 351 rods will fit without getting custom pistons made as they are the wrong length.
 
no164ford said:
Does anyone know what size push rods coy stage 1 cam uses? And what is a good afordable piston and conecting rod upgrade for a 90 sc? I will have a ported supercharger, porter heads with larger exhuast valves (not sure what size yet) custom 3" sc pipe dubble ic, mid lengh headers, custom 2.5" exhust, coy stage 1 cam, and some outher stuff I can't think of now.
Thanks for the info guys. A few more questions, the rods on ebay are they 94/95 rods? How do you tell the differance? And any Idea how much stronger 94/95 polished rods would be compaired to stock 1990 or maby how much HP will they take? Any idea how much better the coated stock pistons for 28.00 would be. I need to built this motor on a low budgit but it can not be junk because I am going to beat the s#%t out of it lol!!!!
 
I was told those rod part numbers are those in the book for 94/95 engines. I have a thread started in the Performance forum in the members section on rebuilding an engine for under 400rwhp.

The consensus has been that stock replacement hyperutectic pistons are sufficient for such a goal. But if you are planning on Nitros or over 400rwhp, you should consider a new forged piston, in which case you can go with aftermarket (stronger) connecting rods.

The stock 90 rods are o.k.... but in general, it seems that the connecting rods in the SC bottom end are the weakest link. The 94/95 rod are marginally better. Polishing the beams on either rod will increase that margin. But if you plan on going all out with the motor... either now, or down the road. A better rod with a Forged Piston may be the best way to go, even if it costs a little more now.

You should check out that thread for the parts list I'm putting together. Like which bearings, rings and such.
 
Mike8675309 said:
I was told those rod part numbers are those in the book for 94/95 engines. I have a thread started in the Performance forum in the members section on rebuilding an engine for under 400rwhp.

The consensus has been that stock replacement hyperutectic pistons are sufficient for such a goal. But if you are planning on Nitros or over 400rwhp, you should consider a new forged piston, in which case you can go with aftermarket (stronger) connecting rods.

The stock 90 rods are o.k.... but in general, it seems that the connecting rods in the SC bottom end are the weakest link. The 94/95 rod are marginally better. Polishing the beams on either rod will increase that margin. But if you plan on going all out with the motor... either now, or down the road. A better rod with a Forged Piston may be the best way to go, even if it costs a little more now.

You should check out that thread for the parts list I'm putting together. Like which bearings, rings and such.
Thanks Mike, I may plan to go with the forged pistons and aftermarket rods Who do you think has the best deal on them?
 
I would check with Paul at Blue Tounge Motosports (http://www.sccoa.com/forums/member.php?userid=509)

and

Dave at Supercoupes Unlimitedhttp://www.sccoa.com/forums/member.php?userid=32

Either or both of them can likely hook you you up with some good information on available forged pistons and the associated connecting rods. You could also search on "forged pistons" and find historical information on what pistons various people have used. Once I set my mind on under 400 hp, I stopped looking into the forged parts.
 
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