Stroker motor talk!-Threads merged

[robertcrav]

Here's a fun read on the subject of 302 based stroker vs 351...
http://www.badasscars.com/index.cfm/pag ... prd104.htm

[robertcrav]

Also an article from Hot Rod Magazine about a "302 based" 363 street engine
http://www.hotrod.com/techarticles/hrdp ... ewall.html

[AussieRod]

Well, its all ok for you guys, I'm stuck with a 6 litre limit here, so a 347 would be ideal. I'm happy to gain torque and a few HP with a lighter engine package than using a 5.8W or even alloy head Clevo (2nd option) and spend the $$$ on the suspension to go faster.

[BDKW1]

A lot of rod ratio talk is BS. Rod ratios become important over 6000 rpm, under that, a short rod is better for speed off TDC, it helps cylinder filling thru the mid range.

Higher port velocity's help mid range in theory. But if you don't want the motor to fall over on the top end your going to need big ports to handle the flow pulses. There goes your mid range velocity and port filling. not to mention your complete lack of bottom end.

Plus the side loading of the short pin pistons makes them wear much faster. Also, you have to run ring supports on the oil control ring due to the wrist pin bore intersecting it. There are way more minus's than pluses in it for Me.

[BDKW1]

I started research awhile back on the stroker subject and everything was based on high dollar build with mas conversions. I am now to broke and tired spending time and money. My questions are-

Could you stoke out a stock motor with stock speed density and yeild some gains in tq and hp?

I know speed density limits cam. heads and fuel system upgrades but could it handle more displacement?

How differnt is the SD set up in similar year 460s? Could you work with parts from that system to make a smog legal stroker set up?

I am sick of worrying about the smog man and I don't have the $$ to buy my desert property yet ; )

If you want motor mods, either do the mass air conversion or get an SDS computer. The speed density's do not take kindly to engine mods.

[cs_drums]

I started research awhile back on the stroker subject and everything was based on high dollar build with mas conversions. I am now to broke and tired spending time and money. My questions are-

Could you stoke out a stock motor with stock speed density and yeild some gains in tq and hp?

I know speed density limits cam. heads and fuel system upgrades but could it handle more displacement?

How differnt is the SD set up in similar year 460s? Could you work with parts from that system to make a smog legal stroker set up?

I am sick of worrying about the smog man and I don't have the $$ to buy my desert property yet ; )

If you want motor mods, either do the mass air conversion or get an SDS computer. The speed density's do not take kindly to engine mods.

Stock it is! Until I have a new address that doesn't require smog.

[economig]

I started research awhile back on the stroker subject and everything was based on high dollar build with mas conversions. I am now to broke and tired spending time and money. My questions are-

Could you stoke out a stock motor with stock speed density and yeild some gains in tq and hp?

I know speed density limits cam. heads and fuel system upgrades but could it handle more displacement?

How differnt is the SD set up in similar year 460s? Could you work with parts from that system to make a smog legal stroker set up?

I am sick of worrying about the smog man and I don't have the $$ to buy my desert property yet ; )

If you want motor mods, either do the mass air conversion or get an SDS computer. The speed density's do not take kindly to engine mods.

Stock it is! Until I have a new address that doesn't require smog.

Ha ha I HEARRRD that!

[AussieRod]

My previous posts aside, I think it is important to ask yourself what it is you are looking for in regard to power increases. If this is your DD, then it has to be able to pass smog, be reasonably fuel efficient (as far as a Bronco can be) and DRIVABLE! If its your race truck, then only your wallet will dictate the limits of your engine.
If you currently have a 5.0L powered beast, consider upgrading to a 5.8L. EFI in like year trucks are ALMOST plug in, and bolt in with minor mods (exhaust, etc). If it has a AOD, a constant pressure valve body and hardened input shaft will help it live with light abuse. The list of bolt-ons to improve performance is endless, and only limited by your wallet and imagination. Even a 5.0 in good working order will benefit from properly chosen bolt-on goodies. For smog legality, look for EO numbered performance parts and be sensible about your goals. Consider that you want to be able to service/repair it anywhere if it breaks down, be able to run well on PEMEX for those who frequent Baja a lot and be cost effective. For you lucky few with deep pockets, look around for stroker engine packages that will pass smog with the right bolt-ons, or for race engines, a good package that gives good HP and LONGEVITY. A good race engine package should last a couple of seasons of racing with regular servicing and tunes. Dont be afraid to err on the small size when it comes to increasing performance, as the most common mistake is more is not always better. Talk with those who have already run the numbers and have reliable engine packages. Let you fingers do the talking, both the phone and internet, as there are countless options out there, but not all of them are right for your application. Just another 2 cents worth.

[Andy Jones]

My previous posts aside, I think it is important to ask yourself what it is you are looking for in regard to power increases. If this is your DD, then it has to be able to pass smog, be reasonably fuel efficient (as far as a Bronco can be) and DRIVABLE! If its your race truck, then only your wallet will dictate the limits of your engine.
If you currently have a 5.0L powered beast, consider upgrading to a 5.8L. EFI in like year trucks are ALMOST plug in, and bolt in with minor mods (exhaust, etc). If it has a AOD, a constant pressure valve body and hardened input shaft will help it live with light abuse. The list of bolt-ons to improve performance is endless, and only limited by your wallet and imagination. Even a 5.0 in good working order will benefit from properly chosen bolt-on goodies. For smog legality, look for EO numbered performance parts and be sensible about your goals. Consider that you want to be able to service/repair it anywhere if it breaks down, be able to run well on PEMEX for those who frequent Baja a lot and be cost effective. For you lucky few with deep pockets, look around for stroker engine packages that will pass smog with the right bolt-ons, or for race engines, a good package that gives good HP and LONGEVITY. A good race engine package should last a couple of seasons of racing with regular servicing and tunes. Dont be afraid to err on the small size when it comes to increasing performance, as the most common mistake is more is not always better. Talk with those who have already run the numbers and have reliable engine packages. Let you fingers do the talking, both the phone and internet, as there are countless options out there, but not all of them are right for your application. Just another 2 cents worth.

Great post Rod!

[cs_drums]

My previous posts aside, I think it is important to ask yourself what it is you are looking for in regard to power increases. If this is your DD, then it has to be able to pass smog, be reasonably fuel efficient (as far as a Bronco can be) and DRIVABLE! If its your race truck, then only your wallet will dictate the limits of your engine.
If you currently have a 5.0L powered beast, consider upgrading to a 5.8L. EFI in like year trucks are ALMOST plug in, and bolt in with minor mods (exhaust, etc). If it has a AOD, a constant pressure valve body and hardened input shaft will help it live with light abuse. The list of bolt-ons to improve performance is endless, and only limited by your wallet and imagination. Even a 5.0 in good working order will benefit from properly chosen bolt-on goodies. For smog legality, look for EO numbered performance parts and be sensible about your goals. Consider that you want to be able to service/repair it anywhere if it breaks down, be able to run well on PEMEX for those who frequent Baja a lot and be cost effective. For you lucky few with deep pockets, look around for stroker engine packages that will pass smog with the right bolt-ons, or for race engines, a good package that gives good HP and LONGEVITY. A good race engine package should last a couple of seasons of racing with regular servicing and tunes. Dont be afraid to err on the small size when it comes to increasing performance, as the most common mistake is more is not always better. Talk with those who have already run the numbers and have reliable engine packages. Let you fingers do the talking, both the phone and internet, as there are countless options out there, but not all of them are right for your application. Just another 2 cents worth.

I don't DD my bronco and dont plan on DD it. It is just a toy. I just dont want to be limited to a trailer. I want to just jump in it and go if I want. Street drive ability, gas milage isnt a concern. I just want reliability over anything. But really who doesnt want more power. I will someday find that middle ground I just think the smog man is in the way of that.

[RyanDS650X]

How much more power can be derived if you go the stroker route over the bolt on route? I am pretty happy with the performance of my truck with aluminum intake manifold aluminum cylinder heads e303 cam,headers and hi flow exhaust with appropriate gears. And mine passes smog with flying colors. I also have a 96 with MAF...

[AussieRod]

I don't DD my bronco and dont plan on DD it. It is just a toy. I just dont want to be limited to a trailer. I want to just jump in it and go if I want. Street drive ability, gas milage isnt a concern. I just want reliability over anything. But really who doesnt want more power. I will someday find that middle ground I just think the smog man is in the way of that.

If you want to keep it tagged in CA, smog is a way of life, get used to it. Might I suggest you keep a stock engine all tuned up for smog, and fit your balls out unit for playing. Smog is once every 2 years, so a engine swap only takes a day (if you know what you are doing). Thats 1 option to keeping it tagged for rare road use. With careful planning, you would be surprised the power you can produce from a stock engine with smog legal bolt-ons. Big gains are to be had in just the exhaust area. Ditching the stock cat convertor and building a good race system can net amazing gains in torque and HP, and you only need refit the exhaust for smog, rather than a stock engine. We all would like TT like power in our trucks, but our wallets and the law always put a damper on it. As far as the smog laws go, it aint gonna change any time soon, and if it does, its only going to get worse, not better. Perhaps a change of address would suit better. (smog free state/area)

[Nick]

You wanna go faster? Put the money in suspension.

[AussieRod]

How much more power can be derived if you go the stroker route over the bolt on route? I am pretty happy with the performance of my truck with aluminum intake manifold aluminum cylinder heads e303 cam,headers and hi flow exhaust with appropriate gears. And mine passes smog with flying colors. I also have a 96 with MAF...

Increasing the stroke in your engine will net gains in torque, the force that provides the pulling power. Most strokers have a lower rpm range where maximum torque is produced, and the good part is that its produced in the rev range you use 90% of the time while driving. A properly built and tuned stroker with smog legal bolt-ons will net between 30 - 50% more power over a dead stock engine. Keep in mind, the rest of your drivetrain will need upgrading to keep with the extra power (this can cost more than the engine)

[AussieRod]

You wanna go faster? Put the money in suspension.

I cant argue with that, Nick A stock 5.0 powered Bronco with 18" of good suspension travel will easily outrun a 600 HP Bronco with 8" of stock suspension in the whoops (except on the highway)

[Seabass]

How much more power can be derived if you go the stroker route over the bolt on route? I am pretty happy with the performance of my truck with aluminum intake manifold aluminum cylinder heads e303 cam,headers and hi flow exhaust with appropriate gears. And mine passes smog with flying colors. I also have a 96 with MAF...

Hey Ryan, I have a similar list of parts in my garage waiting for me to decide what to do with the bottom end. Would you say your bronco is signifigantly faster than a stocker with what you have so far? I'm on the fence between throwing it all on now with the stock bottom end, or building a high compression motor all at the same time. Of course this is all waiting on $$$

How do you like the E303? Most folks I've spoken with say its power band is to high for a heavy bronco. Are you running 0* or retarded or advanced?

[cs_drums]

I don't DD my bronco and dont plan on DD it. It is just a toy. I just dont want to be limited to a trailer. I want to just jump in it and go if I want. Street drive ability, gas milage isnt a concern. I just want reliability over anything. But really who doesnt want more power. I will someday find that middle ground I just think the smog man is in the way of that.

If you want to keep it tagged in CA, smog is a way of life, get used to it. Might I suggest you keep a stock engine all tuned up for smog, and fit your balls out unit for playing. Smog is once every 2 years, so a engine swap only takes a day (if you know what you are doing). Thats 1 option to keeping it tagged for rare road use. With careful planning, you would be surprised the power you can produce from a stock engine with smog legal bolt-ons. Big gains are to be had in just the exhaust area. Ditching the stock cat convertor and building a good race system can net amazing gains in torque and HP, and you only need refit the exhaust for smog, rather than a stock engine. We all would like TT like power in our trucks, but our wallets and the law always put a damper on it. As far as the smog laws go, it aint gonna change any time soon, and if it does, its only going to get worse, not better. Perhaps a change of address would suit better. (smog free state/area)

Correct me if Im wrong but the speed density injection is my biggest limiting factor so I would have to swap a motor and change the wiring or is a mas conversion not to intensive?

How much more power can be derived if you go the stroker route over the bolt on route? I am pretty happy with the performance of my truck with aluminum intake manifold aluminum cylinder heads e303 cam,headers and hi flow exhaust with appropriate gears. And mine passes smog with flying colors. I also have a 96 with MAF...

Your last line says it all. I am a year off for being able to make decent power without pissing off the smog guy.

[hobbyturnedobsession]

You only have to do the maf sensor conversion. I dont remember what it all entails but your motor is fine.

[AussieRod]

Not sure if your Bronco has batch fire or sequential injection. MASS air conversion will need the injector conversion overlay harness as well as the MAF harness, NOT a job for a beginner. SD is sensitive to camshaft duration and vacuum signal, so any mods need to be chosen more carefully than with MAF.

[shockseals.com]

How much more power can be derived if you go the stroker route over the bolt on route? I am pretty happy with the performance of my truck with aluminum intake manifold aluminum cylinder heads e303 cam,headers and hi flow exhaust with appropriate gears. And mine passes smog with flying colors. I also have a 96 with MAF...

Did you change the MAF sensor? Injectors? Throttle Body? Upper Intake? If so, to what?