I'm new to this forum also, just purchased a silver 4.7L SXT, and LOOOVE it, however how much is a Throttle body for the 4.7, and is it an easy install?

thanks!

Dave

 

Some people that upgraded to a larger Throttle Body stated they did not really see much of a improvement in MPG if any. At least it did not lowered the MPG's. But they did say the engine responds much better and you can feel a difference when you put a good load on the engine.

Waiting til Xmas to get my 52mm upgrade from Fastman. People says it is fairly easy to follow Fastman's documentation and you can even call Dan the fastman himself and he can talk you thru any headaches on the phone. When you buy one from Fastman, you will get everything you need to do the swapout.

 

installing one is a piece of cake. if mileage is a concern, then you may want to sticke to the 50mm. I cant say much about the 50mm but the 52mm rocked on my truck.

 

So for a 4.7 L engine, go with a 50 mm throttle body? Where do I buy em from? thanks again!!!!!

 

Huskergto,

The 4.7's uses a different size throttle body. The 50-52mm throttle bodies are only for the 5.2's and 5.9's. If I remember from Fastman's website, the 4.7's uses up to 70mm throttle body.

don't let the size confuse you as it did me. The 4.7 having a larger throttle body is because the 4.7 has a single inlet bore. the 5.2's and 5.9's have dual inlet bores. So if you add the total, the 5.2 and 5.9's actually have 100-104mm total size inlet bores.

Just goto www.fastman.com and all your questions will be answered.