331 (302 stroked) build questions - Ford Truck Enthusiasts Forums



1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

331 (302 stroked) build questions

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 06-06-2014, 09:02 AM
RL250's Avatar
RL250 RL250 is offline
O/O Desert Rat Customs
Thread Starter
 
Join Date: Jan 2014
Location: Where the Army sends me
Posts: 1,083
RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.
331 (302 stroked) build questions

I am planning a build for my other toy. I plan to build a stormed 302 making 331 cubic inches and EFI. Right now I am starting the planning phase. I know we have a lot of carb'd 302's and some EFI ones in this forum, and we are not afraid to tear I to our engines here, so I come to you for advice and ideas.

My basic plan is to build a high torque 331 small block to put I front of a ZF5 and convert to 4x4. I know the ZF is tough, but I need to know what my torque limit is on it.

What I would most like your input on is the top end of the engine. I'm looking for heads, rockers, lifters, cam, and intake suggestions. What kind of specs should I look for? I am leaning heavily toward Trick Flow for a lot of these parts, as I have seen a few articles on heads, and the best torque is coming from Trick Flow heads. I want this build to idle well, and still push at least 300ft-lbs. I'm not a familiar with the Windsor blocks as I am with the 335's, so expect more questions down the line.

As to the block, I have found a reasonably priced short block that already has the 331 kit in it, and will start saving up for it now.
Reply With Quote
  #2  
Old 06-06-2014, 12:42 PM
f100beatertruck's Avatar
f100beatertruck f100beatertruck is offline
Posting Guru
 
Join Date: Apr 2003
Location: Parkesburg PA
Posts: 2,404
f100beatertruck has a very good reputation on FTE.f100beatertruck has a very good reputation on FTE.f100beatertruck has a very good reputation on FTE.f100beatertruck has a very good reputation on FTE.
You're not going to break a ZF5 with a 331.

Why not build a 393 though? 351w with a stroker crank and 302 pistons.
Reply With Quote
  #3  
Old 06-06-2014, 02:47 PM
RL250's Avatar
RL250 RL250 is offline
O/O Desert Rat Customs
Thread Starter
 
Join Date: Jan 2014
Location: Where the Army sends me
Posts: 1,083
RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.
Quote:
Originally Posted by f100beatertruck View Post
You're not going to break a ZF5 with a 331.

Why not build a 393 though? 351w with a stroker crank and 302 pistons.
Figment issues might ensue, mainly due to the Nissan having a smaller engine bay. It was designed for an overhead cam 4 or 6, so I have lateral room, but not as much vertical room.


I still want it streets able, not pure off road. In AZ and a lot of states/counties, they won't even check it when I register, so I'll be street legal.
Reply With Quote
  #4  
Old 06-06-2014, 03:57 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 29,188
Gary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant future
The ZF is rated for ~425 ft-lbs, so I agree with David that you won't break it with a 331. in fact, I don't think my 400 is going to break my ZF as the tires won't have that much traction.
Reply With Quote
  #5  
Old 06-06-2014, 09:00 PM
RL250's Avatar
RL250 RL250 is offline
O/O Desert Rat Customs
Thread Starter
 
Join Date: Jan 2014
Location: Where the Army sends me
Posts: 1,083
RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.
I did email Trick Flow about my plan and they suggested this kit:
350+ Top End Kit

What do you guys think?
Reply With Quote
  #6  
Old 06-06-2014, 10:05 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 29,188
Gary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant future
I like the idea of a complete kit that should be well thought out.
Reply With Quote
  #7  
Old 06-06-2014, 11:10 PM
RL250's Avatar
RL250 RL250 is offline
O/O Desert Rat Customs
Thread Starter
 
Join Date: Jan 2014
Location: Where the Army sends me
Posts: 1,083
RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.
Quote:
Originally Posted by Gary Lewis View Post
I like the idea of a complete kit that should be well thought out.
I looked at it on Summit, and it includes all hardware, fasteners, and gaskets for the top end. It even has the timing gears. The short block I want has all the bearings, including cam bearings. The Billet Specialties serpentine kit has the front cover and fasteners. This just leaves the oil pan, associated gasket, fasteners and oil pump. Well, at least for the engine. I'd still need a wiring harness and ECU, but three kits get me to 95% completion. I like this idea. The flywheel and clutch should be new purchases, then I junkyard a ZF, and fab the mounts. Those will be a small challenge. Wiring will be my biggest headache.
Reply With Quote
  #8  
Old 06-06-2014, 11:33 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 29,188
Gary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant future
Sounds like a fun project.
Reply With Quote
  #9  
Old 06-07-2014, 08:48 AM
Franklin2's Avatar
Franklin2 Franklin2 is online now
Moderator
 
Join Date: Jan 2001
Location: New Market, VA
Posts: 37,736
Franklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant future
Quote:
Originally Posted by RL250 View Post
Figment issues might ensue, mainly due to the Nissan having a smaller engine bay. It was designed for an overhead cam 4 or 6, so I have lateral room, but not as much vertical room.


I still want it streets able, not pure off road. In AZ and a lot of states/counties, they won't even check it when I register, so I'll be street legal.
What year Nissan is it? I got several of my engine swaps stomped on by the local inspectors who would not pass them. My daughter lives near Phoenix and they will not even pass her car if the check engine light is on. Technically that rules applies here also but I carefully plan on where I take it. Is that what you are going to do?

The neatest thing with one of these swaps is putting a nice dual exhaust on it, but that tips them off right away.
Reply With Quote
  #10  
Old 06-07-2014, 09:12 AM
Conanski's Avatar
Conanski Conanski is offline
Post Fiend
 
Join Date: Jun 2006
Location: Ottawa, Ontario
Posts: 23,671
Conanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud ofConanski has much to be proud of
If you want to maximize torque then you need to maximize displacement so if you don't end up getting that 331 opt for a 347 kit instead. I like the TrickFow kit except for the cam, IMO it's got about 10deg too much duration across the board for a max torque build at this displacement, that is typical of course as they advertise it based on how much horsepower it makes not how much torque. Substitute a cam like the Comp 35-320-8 and the motor should make the same peak HP(or very close) but will now have a broader/flatter torque curve with a lot more grunt below 3000rpm.
Reply With Quote
  #11  
Old 06-07-2014, 10:46 AM
RL250's Avatar
RL250 RL250 is offline
O/O Desert Rat Customs
Thread Starter
 
Join Date: Jan 2014
Location: Where the Army sends me
Posts: 1,083
RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.
Quote:
Originally Posted by Franklin2 View Post
What year Nissan is it? I got several of my engine swaps stomped on by the local inspectors who would not pass them. My daughter lives near Phoenix and they will not even pass her car if the check engine light is on. Technically that rules applies here also but I carefully plan on where I take it. Is that what you are going to do?

The neatest thing with one of these swaps is putting a nice dual exhaust on it, but that tips them off right away.
The Nissan is an 04 Xterra. In Az and Tx only select counties have emissions standards. I may be in one, but inspection and registration are done at different places. I have a place to pass the X after the swap. As long as everything is running smooth, TX does not care as much. In my hometown, and the previous duty location, they don't even check emissions stuff. A lot of shady shops here will sell you a passed emissions sticker. It may be wrong, but sometimes a built engine will be cleaner than a smogged engine because it's air to fuel ratio is kept closer to the ideal of 14.7.

Paul- I'll look into the cam.

All- any suggestion for lifters? The kit does not include those.
Reply With Quote
  #12  
Old 06-07-2014, 11:28 AM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 29,188
Gary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant future
Are you going roller or flat-tappet?
Reply With Quote
  #13  
Old 06-07-2014, 01:31 PM
RL250's Avatar
RL250 RL250 is offline
O/O Desert Rat Customs
Thread Starter
 
Join Date: Jan 2014
Location: Where the Army sends me
Posts: 1,083
RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.RL250 has a very good reputation on FTE.
Quote:
Originally Posted by Gary Lewis View Post
Are you going roller or flat-tappet?
Hydraulic roller.
Reply With Quote
  #14  
Old 06-07-2014, 01:33 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 29,188
Gary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant futureGary Lewis has a brilliant future
Quote:
Originally Posted by RL250 View Post
Hydraulic roller.
Here's what Tim recommended for me:


Reply With Quote
  #15  
Old 06-07-2014, 03:31 PM
Franklin2's Avatar
Franklin2 Franklin2 is online now
Moderator
 
Join Date: Jan 2001
Location: New Market, VA
Posts: 37,736
Franklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant future
If you started with a roller block you would not need any fancy lifters like the above.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Just scored a 82 Bronco 93SVT 1978 - 1996 Big Bronco 0 08-01-2015 02:28 PM
331 build plan questions RL250 Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 6 07-07-2014 12:26 AM
Flashing a 302's computer RL250 Computer Chips & Tuners 2 06-10-2014 10:14 PM
need opinions on 331 randys85 Performance & General Engine Building 21 09-28-2013 03:48 PM
347 Stroker? 351? Supercharger? for Laforza w/ Ford 302 that needs rebuilding vatainc Performance & General Engine Building 13 06-16-2002 10:21 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
302, heads

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 08:32 PM.