351w rebuild

[Bdezeeuw]

Working on a 351w swap in my 1991 full-size this is my first engine build and am a bit lost what to do. Got the block tore down and ready to go to the machine shop. I’m going to do a 100% rebuild and looking to get better power and torque for overlanding and towing. Swapping the heads for some GP40s I have that have already been rebuilt and machined. I’m at a loss for what to do with cam and injectors the goal is 300-350hp with a manual swap and plan on doing a 3in dual exhaust infront of the rear axle. Any further insight greatly appreciated

 

[miesk5]

Yo Bdezeeuw,
See the secrets of the 351W V8 @ https://www.rme4x4.com/threads/the-secrets-of-the-351w-v8.114131/

And:
EFI Performance Upgrades by Ryan M @ Fuel Injection Technical Library » EFI Performance Upgrades
And Ryan's How to Pick a Camshaft for EFI (BRONCOS)" @ How to pick a CAMSHAFT for EFI
Good fortune!
Al

 

[Bdezeeuw]

Yo Bdezeeuw,
See the secrets of the 351W V8 @ https://www.rme4x4.com/threads/the-secrets-of-the-351w-v8.114131/

And:
EFI Performance Upgrades by Ryan M @ Fuel Injection Technical Library » EFI Performance Upgrades
And Ryan's How to Pick a Camshaft for EFI (BRONCOS)" @ How to pick a CAMSHAFT for EFI
Good fortune!
Al

Thank you so much for the info from what I’ve read so far it’s been very helpful and full of good points on what I’m looking to achieve

 

[miesk5]

Yo Bdezeeuw,
You are most welcome!

 

[Tbeck]

Old school thought here, but 3” exhaust might be overkill. I don’t think it’ll hurt but it won’t help either. I’d go 2”. And if you pop out in front of rear axle it’s gonna be loud…. But ****, I was young once too so….

 

[Bdezeeuw]

Old school thought here, but 3” exhaust might be overkill. I don’t think it’ll hurt but it won’t help either. I’d go 2”. And if you pop out in front of rear axle it’s gonna be loud…. But ****, I was young once too so….

Fair enough will talk with shops and get better advice on the diameter for the exhaust though I’m pretty set on the location with a muffler in there to quiet it down. The point of relocating it’s dump though is to help with plans later in the build for overlanding