LS7 Block
CNC Heads (not milled)
Forged 6.125 rods and crank
4.130 -3cc pistons
11.5:1 CR
Corsa Carbon Fiber CAI
TSP 1 7/8" Headers
K501 (actually a tiny bit more overlap, but similar specs)
STOCK LS7 INTAKE
STOCK LS7 TB
STOCK LS7 FUEL SYSTEM

Made 573/550 on a MUSTANG MD-1100

I want to hit 620. Point me in the right direction. Go. (yes I know that's a little bit high for the setup, but my kindergarten teacher said aim for the stars!)

NO I don't want to mill the heads
NO I don't want to use E85 due to availability
NO I'm not going to get 2" headers for a gain of 6 hp
YES I've spoken with Tony Mamo... thanks corvette forums, lol.
YES I'm well aware I need an MSD
YES I know that if I throw every breathing and fuel mod known to man I'll probably reach 600 but that's neither cost effective nor a streetable solution for my needs.

Need the best bang for buck

 

Given what you've posted and your (apparent) desire to minimize additional costs and maximize drivability;

1. Mamo'ed MSD Intake;
2. Nick Williams 102mm Throttle-Body;
3. Dyno-tune;
4. Call it a day, whatever HP you reach on the dyno.....it's only numbers, anyway.

KW

 

Nitrous

 

x2.. or maybe just find a dynojet.

 

I'm totally unsure of the K501 cam specs however those are some strong numbers that you have. I'm guessing that a custom low lash solid roller will have you tickling the 590-595 mark but that AND an MSD(Mamofied) could be a solid 610 or so. But neither mod is cheap

 

I'm quite intent on getting 600+ rwhp on the dyno, despite what many may say. Power will definitely set the trap speed.

I'm not going solid roller. Not sure if that was a serious suggestion? I won't be running nitrous either.

I'm veeeerrrrry skeptical about the conditions under which the specific "brand name"-ported msd intakes were tested. I am not going to name names, but several of my close friends spoke to MSD directly at PRI regarding "his" claims and they might be a bit misleading.

Definitely getting an MSD intake whether ported or unported remains to be seen.

Would like more info on TB options. Have heard bad stories about NW quality/electronic controller failures.

 

Making 620whp is going to be a tough road. If your mindset is you aren't willing to up header size to make the 6hp more, then realistically you aren't going to make it to 620. Reason being is that at this point you're going to have to spend the dumb money to get 5 here 6 there 7 elsewhere.

Headers could help but that wouldn't be where I'd start. I'd start with the intake, MSD and NW for sure. Next question is what are you running after the TSP headers? I assume 3" ORX? What catback?

Have you thought about going light weight anything? AKA clutch setup or wheels? Freeing up rotating mass can help with power increase but obviously can get expensive as well.



FYI, I recently built a Z06 that I believe ended at 585whp. We did AI ported heads to bring CR to around where you're at maybe closer to 12. MSD and NW intake setup. I believe it was still on stock catback. Our road race cam (so not huge) and supporting valve train. He picked up ~10whp from going to the MSD/NW over a ported LS7 intake/tb.

Goodluck.

 

Those are pretty good numbers for your current combo. Like others have stated the best bet is a ported MSD and NW102. This could get you close to the 600rwhp mark.

 

OP is very closed minded....

 

Agreed and noted.

IDK what I'm supposed to respond. Sorry it's not your car?

 

What did Tony Mamo tell you?

 

To buy every product he sells, obviously. lol.

 

OP, you're being unreasonable. Wanting 620 to the wheels with an LS7 and "bang for the buck" do not coexist. You're wanting a tippy top number but aren't willing to spend tippy top dollars? Won't get there. You're going to have to spend big to hit your number, especially on (most) Mustang. You'll need to throw a ported FAST or ported MSD, the matching TB, and 2" headers, and tune it. Make sure your injectors are up to it, go to a happy Dynojet, you'll probably get there. You're just not being realistic with your goals vs. budget. Mamo is one of the few who can get you there, but your goal is expensive by nature.

Hey guys! I want Lamborghini power and style but only want to spend Mustang money. What's the best way to get there?

Seriously, you've already got a wicked set up...you've pretty well used up "bang for the buck" already.

 

OP, I wouldn't worry about using E85 until you're over 12.0 even then I've seen cars run up to 12.3 on pump. Gaining almost another point in compression would IMO definitely net some see-able gains on the table. I'd still recommend starting elsewhere though. NW throttle bodies are a work of art, he builds a quality product for sure, leaving the stock 90mm tb on would be a choke point IMO. Especially when trying to reach your goals.

 

What about an electric water pump?

 

I'm still trying to figure out the purpose of this thread.

OP doesn't want to do anything or spend any money but magically wants his car to make 45 more horsepower? Uhhh...

 

LMao. That's what I'm Saying.

 

Is it a 4th Gen F-body? 6 speed? Gears? Rear end? What do you trap in the quarter mile? I have an LS7 blocked based build but with cathedral port heads. Had thoughts about switching over to the LS7 style heads w/ a ported msd intake.

 

Both of you must have the reading comprehension skill of a 1st grader, because that's not what I've posted at all.

 

I never said I wasn't willing to spend money. I just said I wasn't willing to compromise driveability and livability. E85, solid roller, and nitrous are the complete opposite of what I'm trying to accomplish. 2" headers are a waste if I can spend less now in a TB or intake and get twice the gains. If it comes to the point where I have 614 whp and I need 6 more, I might consider it then.

I'm strongly considering intake and tb, but I have to cut through all the internet bullshit and brand loyalty spam on forums to see if these actually make as big of a difference on back-to-back dyno pulls as people claim they do.

I think bang for buck goes all the way up to 1000's of HP. And no, I don't want to spend mustang money, I want to spend toyota money. Is that a problem?

See, you're contradicting what everyone else is saying. That's okay though. Can you tell me why you'd start at the TB and not the intake? What's your experience? Thanks for your help.

C6Z06. The 573 number is corrected, SAE was closer to 589. LS7 heads flow a lot with a quick CNC job. My first pull was with a stock air intake, picked up almost 50 whp (WCF) after it was installed (still strappped to dyno) 20 minutes later.