Ford Bronco Forum - Reply to Topic
Thread: Truck or Mounty Intake for 347 build? Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 
   

Register Now



In order to be able to post messages on the Ford Bronco Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself. DO NOT USE Gmail.com accounts. If you only have a Gmail.com email please contact the administrator here

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
01-26-2013 12:35 AM
Sloride75
Quote:
Originally Posted by Sixlitre View Post
I'm no expert Sloride That's debatable

but I do know that 347s are notorious (amongst Chev-a-lay circles) for producing WAY more power than you'd think they could.

As jownes says(cautions) they're also notoriously mo' expensive and have mo' complications (to build) than a stock block.

I'm an 86er, like yersef' and I "knows" your pains with them raised crown pistons. Some parts guy did me a favour when I replaced my longblock in 99', by spec'ing me a later block with normal pistons and open chambered heads.

No question, if you want to use any other head than your closed chambered E6 heads, you can't re-use that 86' shortblock, with them raised crown pistons.

So, yes being an 86er, you're in for a new later shortblock. The good news is you can purchase a replacement shortblock 302 for just over a grand all day long.

You can also grab a later truck engine used for very low dough and have a local machine shop recondition it or do the machining and you can assemble it. You "may" beat the cost of a shortblock or you may just have fun doing it your way. Either way, getting a newer year shortblock is dirt cheap.

Yup, I've already got a 98 Mountaineer 5.0 on the stand in the garage, hence the source for the intake, gt40p's, and the 4-hole squirters you mention below. Donor truck was a wreck and looked like it had been well taken care of.

Couple that with ONLY those AFR-165 heads and NO OTHER changes and you just built a uber-reliable 5.0 litre with an extra 100 ft/lbs of torque (and hp) for pretty cheap.

A lot of guys here told me the speed density is up to the task, particularly if you stick with your stock truck cam. Not having to go MAF will save you a pile of dough, complexity and keep you bone stock reliable.

My current harness is pretty much shot as is, (lacking most of the loom, oil-soaked and cooked wires with insulation flaking off, etc.) and I plan on replacing it. I pulled "most" of the parts I need for a MAF conversion some time ago from the jy, and haven't gotten around to it yet...I can't justify replacing the old harness with another speed density harness.

After you get it running "surf city fine" with your speed density, then do some research, ask some questions and then maybe add your 1.7s later.

One mod that I'm doing, after reading nuthin' but good things about, is going to the later 4 squirter hole injectors.

They atomize the fuel charge FAR better than our 86' single hole injectors and they "bolt-in".

Most people are claiming at least 20-25% more mileage, better performance and less clogging than the earlier design.

I got an entire set of 8 out of a 95 Mercury 4.6 for $22.00 for the set and aims to install em' in the Spring.

Do some mo' research before you buy a $600.00+ intake that only delivers 5% improvements.

BTW IIRC the 86' had 165 hp and 280 ft/lbs of torque as is. Add them AFRs and that takes you to 380 ft/bs of torque with just a head change........no real mods, no computer change, no big expenses, no change to reliability......food for thought.

Sixlitre
As always, thanks for the reply and discussion, Sixlitre
01-26-2013 12:22 AM
Sloride75
Quote:
Originally Posted by ProBronco View Post
Funny how U all never Use 4 low.........................


Amazing how easy it rpm's the engine, just sayin..................
good point...
01-26-2013 12:21 AM
Sloride75
Quote:
Originally Posted by ponyboy88 View Post
although i agree there will be more strain on the rest of the drivetrain, your not building anything insane here. I would stick to the stock bronco intake and do a gasket port job if your looking for that little extra. as far as afr vs gt40, i would closely look at the price comparison, you wont make that much more power with them (the afrs) but youll loose poundage and gain timing advance per octane. Also, if you decide to add boost (best hp/$ w/o question) down the road, aluminum will hod up much better.

i have a 342 stroker going in my stang (obv. built for higher revs but not a race motor), makes 390 rwhp with no boost, afr 185s, anderson out of box cam, and 590 rwhp with 11 pounds and a touch of meth cooling.
Great info, thank you!
01-26-2013 12:18 AM
Sloride75
Quote:
Originally Posted by Sixlitre View Post
Sloride

by both I meant adding the price of an only marginally better aftermarket intake and the cost of reconditioning used GT-40 heads together.

I meant I believed you'd find that those two costs, together, approached the price of a set of brand new AFR-165 heads (which would produce more power and torque than the GT-40 heads and aftermarket intake).

Sixlitre
AH, got it! My original question/poll was should I use the truck intake or the explorer intake...I don't plan on droppin the dough for an aftermarket intake!
01-20-2013 08:03 PM
Sixlitre
Quote:
Originally Posted by ponyboy88 View Post
although i agree there will be more strain on the rest of the drivetrain, your not building anything insane here.

as far as afr vs gt40, i would closely look at the price comparison, you wont make that much more power with them (the afrs) but youll loose poundage and gain timing advance per octane.

Also, if you decide to add boost (best hp/$ w/o question) down the road, aluminum will hod up much better.

Couldn't agree more ponyboy88 AND he gets brand new components and heads with the AFRs, not just reconditioned used GT-40 parts.

The 9.65:1 compression ratio in an iron head would move him into premium fuel, but with aluminum heads the engine will behave more like 8.65:1 as far as fuel requirements(octane) are concerned.

That much is having your cake and eating it too.

Sixlitre
01-20-2013 07:51 PM
Sixlitre
Quote:
Originally Posted by Sloride75 View Post
That article really has got me thinkin...maybe I won't even change the cam, just add 1.7 rockers. What do you think, 347, stock cam, 1.7's, GT-40P's, MAF, and a tune good for 300hp/350ftlbs?
I'm no expert Sloride

but I do know that 347s are notorious (amongst Chev-a-lay circles) for producing WAY more power than you'd think they could.

As jownes says(cautions) they're also notoriously mo' expensive and have mo' complications (to build) than a stock block.

I'm an 86er, like yersef' and I "knows" your pains with them raised crown pistons. Some parts guy did me a favour when I replaced my longblock in 99', by spec'ing me a later block with normal pistons and open chambered heads.

No question, if you want to use any other head than your closed chambered E6 heads, you can't re-use that 86' shortblock, with them raised crown pistons.

So, yes being an 86er, you're in for a new later shortblock. The good news is you can purchase a replacement shortblock 302 for just over a grand all day long.

You can also grab a later truck engine used for very low dough and have a local machine shop recondition it or do the machining and you can assemble it. You "may" beat the cost of a shortblock or you may just have fun doing it your way. Either way, getting a newer year shortblock is dirt cheap.

Couple that with ONLY those AFR-165 heads and NO OTHER changes and you just built a uber-reliable 5.0 litre with an extra 100 ft/lbs of torque (and hp) for pretty cheap.

A lot of guys here told me the speed density is up to the task, particularly if you stick with your stock truck cam. Not having to go MAF will save you a pile of dough, complexity and keep you bone stock reliable.

After you get it running "surf city fine" with your speed density, then do some research, ask some questions and then maybe add your 1.7s later.

One mod that I'm doing, after reading nuthin' but good things about, is going to the later 4 squirter hole injectors.

They atomize the fuel charge FAR better than our 86' single hole injectors and they "bolt-in".

Most people are claiming at least 20-25% more mileage, better performance and less clogging than the earlier design.

I got an entire set of 8 out of a 95 Mercury 4.6 for $22.00 for the set and aims to install em' in the Spring.

Do some mo' research before you buy a $600.00+ intake that only delivers 5% improvements.

BTW IIRC the 86' had 165 hp and 280 ft/lbs of torque as is. Add them AFRs and that takes you to 380 ft/bs of torque with just a head change........no real mods, no computer change, no big expenses, no change to reliability......food for thought.

Sixlitre
01-20-2013 06:55 PM
Sixlitre
Quote:
Originally Posted by Sloride75 View Post
By "both", do you mean heads and stroker?

!
Sloride

by both I meant adding the price of an only marginally better aftermarket intake and the cost of reconditioning used GT-40 heads together.

I meant I believed you'd find that those two costs, together, approached the price of a set of brand new AFR-165 heads (which would produce more power and torque than the GT-40 heads and aftermarket intake).

Sixlitre
01-20-2013 06:12 PM
ProBronco Funny how U all never Use 4 low.........................


Amazing how easy it rpm's the engine, just sayin..................
01-20-2013 04:34 PM
ponyboy88 although i agree there will be more strain on the rest of the drivetrain, your not building anything insane here. I would stick to the stock bronco intake and do a gasket port job if your looking for that little extra. as far as afr vs gt40, i would closely look at the price comparison, you wont make that much more power with them (the afrs) but youll loose poundage and gain timing advance per octane. Also, if you decide to add boost (best hp/$ w/o question) down the road, aluminum will hod up much better.

i have a 342 stroker going in my stang (obv. built for higher revs but not a race motor), makes 390 rwhp with no boost, afr 185s, anderson out of box cam, and 590 rwhp with 11 pounds and a touch of meth cooling.
01-20-2013 01:59 AM
T Dub Looks like the ol' pic 2 out of the 3 rule will come into play here.

Always like to see strokers in Broncos though!
01-20-2013 12:27 AM
jowens1126 A Solid 347 Stroker will run you north of $8000 properly put together to last and thats not including all the other things you need to do to properly support it. Like higher flow fuel pump, top quality fuel filter, top quality fuel lines, top quality fuel pressure regulator, larger injectors, Upgraded transmission to deal with the increased torque, re-building and balancing your driveshaft, beefing up your rear end, upgrading your brakes, etc, etc, etc, its a never ending cycle.

Upgrading just one part of the system puts alot of stress on the other components. You dont HAVE to do all the other upgrades at once, you can wait for each to break and fix it then.
01-19-2013 10:46 PM
Sloride75
Quote:
Originally Posted by scld1354 View Post
I dont have any experience with the performance of the truck 302 intake. When I was researching an intake upgrade for my 5.0 Mustang, I read over and over how the truck intake was awesome for the low end. IIRC, the hot ticket was a truck lower with a Hartman upper. Back then, I ended up going with the explorer setup. It was bolt-in.

Anyway, I would use the Bronco intake just to aviod having to re-route throttle cable, TV cable, intake tubing, etc. Also, 347s are torque monsters. In a heavy Bronco, you want the torque more than the HP.
Thanks! How did the explorer setup work out for you?
01-19-2013 10:41 PM
Sloride75
Quote:
Originally Posted by Sixlitre View Post
and specifically here;

http://airflowresearch.com/articles/article087/A-P1.htm

prove you get 100 hp AND 100 ft/lbs of torque with NO other changes. Even using the stock cam. Your GT-40s ain't-a-gonna git you anywhere near that !

Sixlitre
That article really has got me thinkin...maybe I won't even change the cam, just add 1.7 rockers. What do you think, 347, stock cam, 1.7's, GT-40P's, MAF, and a tune good for 300hp/350ftlbs?
01-19-2013 10:32 PM
Sloride75
Quote:
Originally Posted by jowens1126 View Post
Get yourself one of these......$680 @ Summit or Jegs

One of these...$18.00 @ summit

A set of these... $28.00 @ Summit

Then one of these...$349.00 @ Jegs

A set of these AFR HEads....$1500.00 @ Jegs

One of these......$300.00
and a custom tune for $250

One of these.....$225.00 @ Jegs

Then hold on to the wheel.
= $3350, and I haven't even touched the block or rotating assembly!!!
01-19-2013 10:25 PM
Sloride75
Quote:
Originally Posted by Andrew James View Post
Bronco intake.
Thanks!
01-19-2013 10:23 PM
Sloride75
Quote:
...from both of those proposed "N-Deavours" and git yersef' a pair of brand new (ready to bolt on) AFR-165 aluminum cylinder heads and you'll be further ahead muh friend...
By "both", do you mean heads and stroker?

Great links, thanks!

Quote:
prove you get 100 hp AND 100 ft/lbs of torque with NO other changes. Even using the stock cam.
100 hp at 6200 rpm and 100 ft/lbs at 4300 rpm

Quote:
Your GT-40s ain't-a-gonna git you anywhere near that !
Nope, but I don't plan on spinning it that fast either!

Quote:
You asked

I did, and I sincerely thank you for the reply!!!

I figure I'm gonna rebuild the bottom end, might as well spend a (relatively) little more and make it a stroker. I think my stated goals are (relatively) conservative, and the ole iron heads should support it. I figure this way, if I ever do want to get crazy with it, I can swap the heads later...but doing so would also, I think, require new throttle body, new injectors, fuel pump, etc.

Thanks again for the input!
01-18-2013 07:28 PM
jowens1126 Theres no NEED for any aftermarket part, its all a matter of WANT.
01-18-2013 06:15 PM
Andrew James There is no need for an aftermarket Ford truck 302 intake.
01-18-2013 11:31 AM
jowens1126 Aint it funny how one thing leads to another, then another, then another
01-18-2013 11:27 AM
jowens1126 Get yourself one of these......$680 @ Summit or Jegs


One of these...$18.00 @ summit


A set of these... $28.00 @ Summit


Then one of these...$349.00 @ Jegs


A set of these AFR HEads....$1500.00 @ Jegs


One of these......$300.00

and a custom tune for $250

One of these.....$225.00 @ Jegs


Then hold on to the wheel.
This thread has more than 20 replies. Click here to review the whole thread.

Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome