20' manifold or pulley down??

[yote41]

I have a procharged 16 gt. Kooks lth,corsa exhaust dw95,bap,mak inlet, 3.5 pulley 10 psi. Made 665whp. I would like to break 700 whp. Should i put the 20 manifold on or pulley down to 12 psi? E85 is not readily avail. Around me so that is out.

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[fuelforfire87]

I would just pulley down and throw some boostane or torco, etc in with your fuel for added safety and to boost octane. Not sure if the 18+ manifold alone would get you to 700+. Also that extra hp from the 18 mani will only come at the top of the rpm rqnge from revving the motor higher.

 

[Stephen@lethal]

The pulley would probably be the best bet to go. If you are thinking of pulleying down, I would throw a Griptec pulley on it at the same time to make sure you keep belt slip under control and don't have to worry about it. https://www.lethalperformance.com/s...d-mustang-gt/pulleys-2/sueprcharger-pulleys-2

 

[EFI]

What RPM did you make your peak power at? If you have the headroom, you can keep spinning it another 500rpm or so to get your 700 as power should continue to rise with more RPM.

 

[vanquishvzla]

why no both? IM is only like $250 + 2 hour labor at a shop...

 

[yote41]

The top rpm was around 7600. I do have opg done was well.

 

[SSG 5.0]

why no both? IM is only like $250 + 2 hour labor at a shop...

Where’s this $250 2018 IM?

 

[EFI]

Where’s this $250 2018 IM?

Probably meant used, new they are just over $300.

 

[fuelforfire87]

Probably meant used, new they are just over $300.

Yea ain't no way you're getting a 2018 manifold new for that price. IIRC when I bought mine new I paid 450. Used you can get a better deal. Plenty of people selling takeoffs from cars that have gone supercharged.

 

[fuelforfire87]

Yea ain't no way you're getting a 2018 manifold new for that price. IIRC when I bought mine new I paid 450. Used you can get a better deal. Plenty of people selling takeoffs from cars that have gone supercharged.

Also just checked Beefcake Racing is having a sale $395 for the mani.

 

[vanquishvzla]

Where’s this $250 2018 IM?

https://www.mustang6g.com/forums/threads/2018-intake-manifold-takeoff.137888/

there... $280... maybe you can negotiate to $250...

i never said new

 

[vanquishvzla]

i have the pigtails for the manifold swap if you wanna keep the imrc operational

 

[yote41]

Getting parts put on in 2 weeks. Final verdict? Mani or pulley down? Im am limited to 93 octane at the moment but can run torco.

 

[BrandonS550]

Absolutely do the manifold. You'll see a pretty big jump in power up top.

 

[Brazos609]

Getting parts put on in 2 weeks. Final verdict? Mani or pulley down? Im am limited to 93 octane at the moment but can run torco.

Just do both. They are both relatively quick and inexpensive upgrades.

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