331 Stroker from Start to finish.

[stinger86]

OK. I've learned so much from all of you guys and thanx. Now the hard part. Actully doing the work!

I plan on taking the engine (302) out next weekend in the garage. I want a 331 stroker. My first question is should I dissassemble and get my block examined to see if its in shape for stroking? What else should i look into my engine to start the process. Heads? I'll take pic and post but I dont want to get started and realize i missed something or that it wasnt in good shape to begin with. I plan on buying the stroker kit, new carb, intake manifold, headers, pistons. Are there any parts that can be sneaky or misleading that i should replace for performance or reliability? Thanx guys. THis will be a street maybe a strip but i want that torque.

I know its going to be a bitch but, i want to do it. Im learning everyday.

 

[palerider94]

Summit has a nice write up.

Strokers Wild, Part One: We Build a 347 C.I.D. Ford 5.0L - SummitRacing.com

 

[rbohm]

my advice goes like this;

1: buy a rebuildable motor from a salvage yard and disassemble it. take the block to your local machine shop and see what it would take to get the cylinder bores round again. also have the rest of the block machined as needed to make everything square and ready for new components.

2: once the block is done, the order the stroker rotating assembly kit you like.

3: do an initial mock up assembly of the crank, rods, pistons, bearings(leave the rings out for now this is only a mock up), to check to see if you need to clearance the block for the stroke.

4: if you need to clearance the block, mark the places that need clearance, and disassemble the motor and cut the block as needed. reassemble and recheck. repeat as needed.

5: when you assemble the motor for real, use a high quality assembly lube, like royal purple, and use it liberally. take your time and do the job right.

getting into heads and cam, if you go with 331 then you want a head that has an intake runner of 185cc. if you go with a 347 then you want an intake runner closer to 200cc. as for cam, that will depend on what you want from the engine. for instance if you are building a daily driver, then you want a cam that works best in the 1000-5000 rpm range. with the stroker motor you can fudge that up about 500 rpm if you like. if this is a back up driver/toy, then you can go a bit bigger on the cam, say one that works in the 2000-6000 rpm range. flat tappet or roller cam, that is your choice.

for an intake i suggest the performer rpm or the weiand stealth intake.

for headers something with a 1 5/8" primary tube and a 3" collector will do just fine on your motor.

 

[stinger86]

Wow, thanx for that! I think I'm just going to buy a new block. I dont have any professional tools so cutting the block for me means getting it done. Would i jsut want to buy a ready to build block for the stroker or is cutting not that big a deal.

 

[rbohm]

cutting the block is not a big deal. all you need is a die grinder, and the right cutting tools. you can pick them up at any hardware store.

 

[PoppyMod]

Wow, thanx for that! I think I'm just going to buy a new block. I dont have any professional tools so cutting the block for me means getting it done. Would i jsut want to buy a ready to build block for the stroker or is cutting not that big a deal.

The advice given by the previous poster (rbohm) is very good advice. I do all of my own blue print assembly and myengine is a 331 w/.040 over bore. So, I have experience, from which, to offer advice. If you have no tools or in-house means of bottom-end assembly, then, purchase a 331 stroker short block. I have no affiliation with Ford Strokers except for his recommended parts, but, will offer they will stand behind their work and treat you to right.
If you have a cam in mind, they will install it "correctly".
If you the "bloody" details, PM me.

Good L:uck with your project.

 

[mustangbrad]

The advice given by the previous poster (rbohm) is very good advice. I do all of my own blue print assembly and myengine is a 331 w/.040 over bore. So, I have experience, from which, to offer advice. If you have no tools or in-house means of bottom-end assembly, then, purchase a 331 stroker short block. I have no affiliation with Ford Strokers except for his recommended parts, but, will offer they will stand behind their work and treat you to right.
If you have a cam in mind, they will install it "correctly".
If you the "bloody" details, PM me.

Good L:uck with your project.

I second this. You can't go wrong with Ford Strokers short block and a Jay Allen top end!