HP increase?

Falcons Talon · 03-23-2006, 01:08 PM

I've made a few mods from my old combo after I spun a rod bearing. Turns out the crank was in bad shape and ate up the bearings pretty quick. After a complete rebuild, I've upgraded a few things.

My last Dyno run gave me 325 hp@4000 rpm and 385 rwtq.
The combo was a 351w +.060, afr 185's, custom grind cam, gt40 tubular intake, 65 mm tb, 1 3/4 lt headers, and 73 mm maf. This was at 12* timing and running 87 octane gas.

Upgrade mods include a trick flow 351r intake (1500-6500 rpm), BBK 75 mm tb/spacer, and a bump in timing to 18* and 93 octane gas.

I know I still need to upgrade the MAF to an 80mm and i need to go with a fatter cai, but with the mods done, how much of a hp gain do you think I'm looking at?

Unit 5302 · 03-23-2006, 06:45 PM

I would think you'd pick up 15rwhp getting rid of the GT-40 intake and opting for the 75mm T/B. I'd expect your peak power to jump up some rpm too.

Dark_5.0 · 03-24-2006, 09:39 AM

Your peak power will increase with the bigger intake but your torque curve will suffer a little bit.

03-23-2006, 01:08 PM	#1
Falcons Talon T.P.M. President Join Date: May 2002 Location: Brownsville Posts: 265	HP increase? I've made a few mods from my old combo after I spun a rod bearing. Turns out the crank was in bad shape and ate up the bearings pretty quick. After a complete rebuild, I've upgraded a few things. My last Dyno run gave me 325 hp@4000 rpm and 385 rwtq. The combo was a 351w +.060, afr 185's, custom grind cam, gt40 tubular intake, 65 mm tb, 1 3/4 lt headers, and 73 mm maf. This was at 12* timing and running 87 octane gas. Upgrade mods include a trick flow 351r intake (1500-6500 rpm), BBK 75 mm tb/spacer, and a bump in timing to 18* and 93 octane gas. I know I still need to upgrade the MAF to an 80mm and i need to go with a fatter cai, but with the mods done, how much of a hp gain do you think I'm looking at? __________________

03-23-2006, 06:45 PM	#2
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Re: HP increase? I would think you'd pick up 15rwhp getting rid of the GT-40 intake and opting for the 75mm T/B. I'd expect your peak power to jump up some rpm too.

03-24-2006, 09:39 AM	#3
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	Re: HP increase? Your peak power will increase with the bigger intake but your torque curve will suffer a little bit. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

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