351w w/ SD Build Tips
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351w w/ SD Build Tips
I have a 351w with sd and wanna add some hp but primarily torque, i would like 400+ ft-lbs. I have a $4,000 budget for upgrades. I will only run a SD safe setup though because I am limited since it's not maf. Let me know what I should do.
Thanks
Thanks
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95 f150 4wd 5 spd, 96 f250 351w with the 95 f150 5 spd, the engine has 139k miles with a rebuild about 40k miles ago, everything on the engine seemed good, atleast thats what my buddy said when he rebuilt it for me.
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If the 5 speed is from the F150 then it is a M5R2 and a 351W with any upgrades will most likely blow that tranny.
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I know, gonna run a zf5 after it's built
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Former Vendor
Joined: Apr 2019
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From: Shawnee KS
You're going to need to upgrade the ECU if you want to pick up that much power. PiMPx would be plug and play for that application.
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Senior User
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Ok, is there any way i can get a little more torque than stock atleast with a new cam, heads, and possibly injectors without a new ecu
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
No that is far too much modification for the stock ECU. You will get a nice torque boost with longtube headers and 1.7 roller rockers coupled to a single 2.5" exhaust, the stock cam in that motor is actually a pretty good torque cam it just needs some more lift.
Fleet Mechanic
Joined: Aug 2005
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From: MD
The Lightning guys did a lot of SD tuning. Try some reading here: https://www.nloc.net/vbforum/
Fleet Mechanic
Joined: Aug 2015
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From: Candy Mountain
If it was indeed a 96 351w and it was a decent rebuild you have a good foundation to build on. The truck roller cam is a good torque cam, so no real need to invest in an aftermarket cam. Your bolt on options sticking with the factory SD system are somewhat limited. I think the roller rockers are a no brainer if you stick withe the stock cam.
If you improve the flow too much you for (installing AFR 185's for example) you will need larger injectors to keep up, but you cannot swap to larger injectors without a different control system, which I think would also inhibit a stroker build.
To the group: Would cast iron GT40 heads, GT40 or mild aftermarket EFI intake, and long tubes with the stock roller cam combined be too far for the stock system?
If you improve the flow too much you for (installing AFR 185's for example) you will need larger injectors to keep up, but you cannot swap to larger injectors without a different control system, which I think would also inhibit a stroker build.
To the group: Would cast iron GT40 heads, GT40 or mild aftermarket EFI intake, and long tubes with the stock roller cam combined be too far for the stock system?
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
What you are building there is a 5.8 version of the Explorer motor which runs fine on 19lb injectors but that vehicle also has a MAF EFI system with a different tune than a pickup, but this combo has been put together before and worst case it might need an adjustable FPR or a chip to run decently well. The Lightnng 5.8 also has those same GT40 parts but has a different cam so again that PCM has a different tune, but that may be another way to make this work like it should... go find a Lightning PCM. That PCM is also supported by the Moates and Tweecer tuning systems that that have been around for some time.
Fleet Mechanic
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From: Candy Mountain
If you are willing to go custom or aftermarket on the control side it opens up a lot of possibilities, but the further from stock you go will require more beefing up of the rest of the power train. You still can't get too crazy, as you want the power to come on at low rpm's.
If you are willing to accept a little less power than your stated goal then it will end up a lot more reasonable on the cost end, and you could still have a sweet little truck.