Progress Thread 351w stroker rotating assembly and build

Ric4eyedFox · Mar 23, 2025

I have a 1996 351w roller.
I came across a eagle crank shaft .( 4”stroke 4340 forged) from an individual on Facebook for a good price. I ended up buying it. I’m having trouble on choosing brands on the rest of the rotating assembly. I plan on going .030 over. Although the block looks in very good shape right now.. should I just go l eagle with the rods and pistons ? Should I keep stock bore ? . Im lost and what cam to get as well… I Also have 210cc pro comp aluminum heads and a tremec tkx transmission.. I will want to turbo in the future but as of now I would be very happy with a 500 -550hp car. Im building this in my 83 coupe

Noobz347 · Mar 23, 2025

Have you chosen the shop that's going to do the machine work?

I would let them look the block over and help you decide from there.

Ric4eyedFox · Mar 23, 2025

Noobz347 said:
Have you chosen the shop that's going to do the machine work?

I would let them look the block over and help you decide from there.

Yes I dropped the block off at the local machine shop to get cleaned. I will ask him. Tomorrow

Ric4eyedFox · Mar 23, 2025

does anybody have any personal experience or personally know somebody with the 210cc Procomp heads?? If so please share experience thank you..

Noobz347 · Mar 23, 2025

Ric4eyedFox said:
Yes I dropped the block off at the local machine shop to get cleaned. I will ask him. Tomorrow

Nice. Once the bores are all measured you can figure out if you need to go over.

Noobz347 · Mar 23, 2025

Ric4eyedFox said:
does anybody have any personal experience or personally know somebody with the 210cc Procomp heads?? If so please share experience thank you..

I moved this in here since it's for the same build.

Procomp are Chinese knock-offs. The castings seem to be 'ok'. I've seen some folks return them for other castings and some build them up and they work just fine.

Ric4eyedFox · Mar 23, 2025

That’s for the advice. If the bores all look good stick to the stock bore

Noobz347 said:
I moved this in here since it's for the same build.

Procomp are Chinese knock-offs. The castings seem to be 'ok'. I've seen some folks return them for other castings and some build them up and they work just fine.

thanks for moving it.. I am new here and still trying to figure out how to navigate thru this page. I unfortunately bought some used ones on Facebook marketplace .. not knowing too much about them. I just saw 210cc and jumped up quickly.And now I am worried about dropping a valve after I invest in forged rods and pistons..

Noobz347 · Mar 23, 2025

Ric4eyedFox said:
That’s for the advice. If the bores all look good stick to the stock bore

thanks for moving it.. I am new here and still trying to figure out how to navigate thru this page. I unfortunately bought some used ones on Facebook marketplace .. not knowing too much about them. I just saw 210cc and jumped up quickly.And now I am worried about dropping a valve after I invest in forged rods and pistons..

Drop them off to the same machine shop that has your block. They can look those over too and probably advise you on springs and cam to go with your pistons and rods.

Ric4eyedFox · Mar 23, 2025

Noobz347 said:
Drop them off to the same machine shop that has your block. They can look those over too and probably advise you on springs and cam to go with your pistons and rods.

I will do that tomorrow. Thanks for the advice

AeroCoupe · Mar 24, 2025

Good valves and valve train parts will keep that valve right where it needs to be. I had one of the valves that came with my AFR 185's come apart and smoke the motor which lead me to buying bare heads and having the gentleman that builds my motors put the heads together with good parts as well. Not saying all assembled heads have junk parts but they are doing everything they can to keep prices down to compete with the offshore stuff.

Blackhawkxx · Mar 24, 2025

AeroCoupe said:
I had one of the valves that came with my AFR 185's come apart and smoke the motor

I have always heard one of the reasons to go with AFR is their high quality parts. Was yours a one off or have you heard from others the same?

AeroCoupe · Mar 24, 2025

I have one of the first sets of the 185’s from back in 1998-1999 so a lot has changed with them since then i.e. got better. Just saying that due to that I just get bare castings and build them out with what l know are quality parts.

Ric4eyedFox · Mar 24, 2025

AeroCoupe said:
Good valves and valve train parts will keep that valve right where it needs to be. I had one of the valves that came with my AFR 185's come apart and smoke the motor which lead me to buying bare heads and having the gentleman that builds my motors put the heads together with good parts as well. Not saying all assembled heads have junk parts but they are doing everything they can to keep prices down to compete with the offshore stuff.

That makes sense

Noobz347 · Mar 24, 2025

Blackhawkxx said:
I have always heard one of the reasons to go with AFR is their high quality parts. Was yours a one off or have you heard from others the same?

AFR [used] to be all hands-on with their stuff. Nothing went anywhere without a bunch of motor-heads snooping all over it, first.

I don't know that [anybody] is that way anymore. All those man-hours means the Chinese are under-selling you. They play the averages and send whatever is on-deck, out the door. Sure, some come back but what do they care? They're playing the percentage. You'll have to jump through hoops, pay half the shipping, etc.. and so on, if you ever want to see your engine make "Vroom".

So... I whole-heartedly agree with what AeroCoupe is saying:

Get the castings (have them checked out)
Get your parts (and have them all checked out)

Because these steps are skipped by most manufacturers/vendors that deal with us Riff-Raff John-Q Public types.

Progress Thread 351w stroker rotating assembly and build

Ric4eyedFox

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Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

Ric4eyedFox

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Ric4eyedFox

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Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

Noobz347

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Ric4eyedFox

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Noobz347

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Ric4eyedFox

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AeroCoupe

lube between the nut and the face. I know my lubes

Blackhawkxx

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AeroCoupe

lube between the nut and the face. I know my lubes

Ric4eyedFox

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Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

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Progress Thread 351w stroker rotating assembly and build

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lube between the nut and the face. I know my lubes

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lube between the nut and the face. I know my lubes

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