Stroker motor talk!-Threads merged

[BajaBen]

Ben, factory heads will suck on a 408. Pony up for better flowing heads

weeeeeeeeell, come to find out the factory heads got hot tanked this week and they found several small cracks. Nothing major they say, got me thinking now though.

What are my options? Looks like rebuilt heads run about 300.00 per bank. $600 - 700 complete. Built ones sell for 1K

I found these on flea bay , thoughts
http://www.ebay.com/itm/Ford-289-302-35 ... 01&vxp=mtr

My build thus far, please help me pick some heads and a reality check on my parts list.

95 Bronco, roller motor, efi

- Motor Build -

rebuild it to 408 (Scat 408 assembly kit )
Heads ??
Compcam (35-310-8) Attached the specs for reference (thoughts ??)
stock intake
shorty headers
Meiling hi-flow pump
Keeping the EFI, smog stuff
Stock fuel system
Stock ECU

anything else I am missing
thanks !

[BajaBen]

nevermind on the flea-bay head, found the GT-40 thread right now , give good after market options please

[Dust]

For just out of the box, bolt and go, it is really hard to beat the prices that can be had on just a set of Edelbrocks.

[TurboJoe]

It might be s good idea to speak with your machine shop, If they build performance engines they can help you pick a combo for your budget...

Joe

[Agui-E7TE]

It might be s good idea to speak with your machine shop, If they build performance engines they can help you pick a combo for your budget...

Joe

Agreed! All I can do is just give ambiguous suggestions on what heads to use but the reality is your engine builder would be the one to ask. GT40 heads are nice because they're iron heads and you can still likely get away with them for emissions testing. I've seen a stock bottom end 5.0L Mustang smoke the competition with Vic. Sr. heads and what I think was an Anderson Cam. The car did have a TH350 with a manual valve body and a 3800 RPM Stall Torque Convertor and 5.13 gears. That thing was crazy fast but likely only worked for 1/8 mile tracks. It was running the stock fuel injection controls with a larger fuel pump, adjustable FPR and 36 lb. injectors.

[Dust]

It might be s good idea to speak with your machine shop, If they build performance engines they can help you pick a combo for your budget...

Joe

Agreed! All I can do is just give ambiguous suggestions on what heads to use but the reality is your engine builder would be the one to ask. GT40 heads are nice because they're iron heads and you can still likely get away with them for emissions testing. I've seen a stock bottom end 5.0L Mustang smoke the competition with Vic. Sr. heads and what I think was an Anderson Cam. The car did have a TH350 with a manual valve body and a 3800 RPM Stall Torque Convertor and 5.13 gears. That thing was crazy fast but likely only worked for 1/8 mile tracks. It was running the stock fuel injection controls with a larger fuel pump, adjustable FPR and 36 lb. injectors.

I once watched a nothing looking Turbo-coupe annihilate all comers, pass after pass, but...
It spun to 10k and ran a 750shot on top of staged and iced Teez and all of the lower metal was replaced with molly.
Cash changed hands that night!

Should you talk to a good engine builder/ Hell Yes! Is your guy any-better then you... maybe, and sadly likely not!
With a stock intake you don't need to go to far with the heads hence a set of #60399.
These castings will give you plenty, sure the AF is done at 0.5 but your cam is also done under 6k and your intake was tuned for 1/2 that!
All of that is ok and if you need more then have the heads CNC'd and step the cam and manifold up later.

[cs_drums]

I know little to nothing about engine buiding and especially fuel injection. That being said, I am just curious, could you stroke a completely stock motor and see power gains? I am probably just gonna do a stocl rebuild when my motor is toast for realiablity just curious on some option for smog legal hp with out breaking the bank.

[Phoenix0783]

There's no replacement for displacement. To a bigger engine the h/c/i will seem smaller so it will move the torque and hp down lower in the rpms. You would see torque gains, but probably not horsepower gains.

[cs_drums]

would you see horsepower losses or just no gain?

[Rmc]

Heads n intake are the biggest roadblocks with stock engines, if u swap heads you'll see gains in the 30 to 40 hp range, swap the intake plenum and intake manifold you'll see 25 to 30, from what I've read. on a 5.0 for instance u can put a 331 stroker kit, reinstall the engine, unplug the battery for 15 mins start it n let it idle for 20 mins n the computer will recalibrate according to new changes. This is on obd2 maf motor though.

[Rmc]

I'm unsure if the recalibrate on process works the same on speed density systems, u still have to do a complete rebuild with block clearancing for the stroker crank first. Remember all components must have a carb number except the stroker kit if the the land of fruits n nuts.

[Phoenix0783]

would you see horsepower losses or just no gain?

It's possible. Moving the torque down lower in the rpms will lower the horsepower if the torque increase isn't a lot because it's a function of torque and rpm. If you get a stroker, I would get some head work done and maybe an edelbrock intake.

[Rmc]

U may also have to swap from 25 to 27 lb injectors also. There's a lot of info on this on the ford truck enthusiast, and mustang forums. The standard swap stuff for my 5.0 is gt40p heads, 27lb injectors, intake swap to trickflo or edlebrock, power pullies minus the alternator one, ac delete and upgrade to an electric radiator fan. All this without messing with the block. Supposedly just under 370hp but I have no idea really. I've been reading about 400+ hp 351 builds for as cheap as possible, I've found one for 1100$ and one for 1300$ but no way in hell it will pass emitions.

[Rmc]

But ultimately u got to make it breathe before u consider a stroker otherwise it's just a bundle of joyful fuel/ air starvation.

[cs_drums]

Idealy mild stroker with edlebrock intake and heads but would the SD be able to keep up thats what I dont know about. Im not looking for anything crazy i just figure when its time to replace it what would make it worth it to shell out a few extra $$

[cs_drums]

Yeah the SD and smog are the factors making it hard. If i could i would just run a carb!

[Rmc]

FYI torque accelerates u, horsepower is at the opposite end of the curve, high torque down low continually dropping while hp is increasing at max rpm. This brings me to one of my favorite quotes of all time:" torque wins races, horsepower sells cars."

[Rmc]

The gt40p heads are oem off an explorer, so no c.a.r.b. issue there. The edlebrock intake system is about 5 to 600$ if I remember correctly. What motor/ year bronco we talking about? Maf? Speed density?

[hobbyturnedobsession]

Why not have rhe lower intake port matched. Thats the chole point of the stock intakes anyway.

[hobbyturnedobsession]

Choke