Help me get from 525rwhp to 600rwhp!

[DG98GT]

Here is the current setup:

525rwhp @ 6300, 453rwtq @ 5000
13-14psi (going off gauge because not logged), 11.8 A/F ratio, 19-degrees timing

Built Shortblock:
’99 4.6L truck block (stock bore), 17cc CP pistons, Manley H-beams, Mark VIII crank, fegeral mogul bearings, cobra oil pump and pickup tube, canton windage tray and 7qt. oil pan, ARP head and main studs, stock gaskets. (approx. 8.9:1 compression because of head chamber work)

Heads/Cams/Intake:
2001 heads that were ported/polished (don’t know flow #’s), swirl dams removed, MPH blower cams, 2001 intake with 75mm Dragon Plenum and Throttle Body

Exhaust:
FMS shorty header, MAC Prochamber h-pipe, MAC 2 ½” catback

Power Adder:
Vortech V1 S-trim with AFM 4” powerpipe, MPH Intercooler, SCT BA2800 MAF, Vortech Mini-Race bypass, 2.85” pulley, 8-rib setup, stock crank pulley,

Fuel System:
16-gallon plastic fuel cell mounted in trunk, -10AN lines to A1000 pump, 100-micron filter before and 10-micron filter after the pump, -8AN lines to XMP fuel rails, 60lb injectors, -8AN lines to Paxton boost sensitive adjustable fuel pressure regulator, -6AN lines to return.

Ignition:
TR-6 plugs gapped at .032”, FMS plug wires, MSD coil packs.

Misc:
3.73’s, EGR Delete

My goal is 600rwhp. No methanol injection, no Nitrous, no switching to turbo’s, etc. No electric water pumps, different heads, etc. I know I will have to overspin the blower to get there. I have seen a few s-trim guys do it, so here is my thinking:

Innovators West 10% OD crank pulley (7.5”)………20rwhp
LongTubes with shorty midpipe (MAC, BBK, etc)…25rwhp
Intake Manifold (logan, rr, bullit, etc.)………………30rwhp

Maybe these are way off…….I’m just throwing something out there. With those guesstimates, I should be right at 600rwhp. I would like to maximize the s-trim setup before upgrading to an SI, T, JT, or YSI head unit.

I want to do each of these mods individually and dyno to see where the gains came from. This won't happen overnight!

Are this rwhp estimates close for my setup? Any other ideas out there?

Thanks,
Derrick

[ljinx23]

nm

[Purple Haze]

I didn't see what crank you're running?

Up the rpm, drop the stock intake, add 3-4 more pounds of boost and you're there.

Then switch blowers

[DG98GT]

Originally Posted by Purple Haze

I didn't see what crank you're running?

Up the rpm, drop the stock intake, add 3-4 more pounds of boost and you're there.

Then switch blowers

I am using a lincoln mark VIII crank.

With the stock intake, I seem to be limited to 6300 rpm for my peak. So you are saying if I get a logan or RR intake, I can rev higher and therefore make more power?

Thanks,
Derrick

[Fastangboi]

Are your cams degreed in? Ive heard that it is a big help when its dialed in dead on.

[DG98GT]

Originally Posted by Fastangboi

Are your cams degreed in? Ive heard that it is a big help when its dialed in dead on.

Oh yeah, they are in at 114.5 and 114.25 intake centerline. It took 3-4 weeks to get the car perfect because I kept having to buy tools to get the job done right.

[01 blue bullitt]

fox lake manifold and overdrive crank pulley

[DG98GT]

Originally Posted by 01 blue bullitt

fox lake manifold and overdrive crank pulley

I really like the results of the P-51, but I really don't care for the looks. I will defiinitely do the OD crank pulley.

[Purple Haze]

Originally Posted by DG98GT

So you are saying if I get a logan or RR intake, I can rev higher and therefore make more power?

Usually, yes. I'm not on the up on the characteristics of the Logan or the RR intake as I've been out of the game for a minute. Though, when I bought one of the first SVO intakes for mine, it did push the rpm band up, as well as shift the power curve up a bit. I would get your hands on as much information regarding those two issues. Then make an informed choice, not just on looks alone

[DG98GT]

I'm gonna order a 7.5" OD crank pulley..........dyno the car, hope for 20rwhp. Then get a 2.70" vortech hi-trac 8-rib pulley..........dyno the car, hope for 20rwhp. If those 2 things get me to 565rwhp or so, I will be happy with my little s-trim. Then look at either intakes, new head unit (T, JT, or YSI), or full 3" exhaust.

I'll keep everybody updated. I found a local guy with a dyno, so I can do some before/after with pulleys at the same time.

Derrick

[bday1683]

Any updates? I am curious about what the overdrive pulley made.

[DG98GT]

Currently at 548rwhp but at 5600rpm with major spark blowout after that. Torque went up to 516rwtq from 454. Pulls really really hard now........I just gotta get this spark issue fixed and I think it will pull very close to 600rwhp with just the smaller blower pulley and 10% OD crank pulley.

I'll keep you udpated.

Thanks,
Derrick

[TonyG]

You can keep your blower, and have Vortech convert it to an Si-Trim or T-Trim.
...Just a thought

[oxstang]

Originally Posted by DG98GT

Here is the current setup:

525rwhp @ 6300, 453rwtq @ 5000
13-14psi (going off gauge because not logged), 11.8 A/F ratio, 19-degrees timing

Built Shortblock:
’99 4.6L truck block (stock bore), 17cc CP pistons, Manley H-beams, Mark VIII crank, fegeral mogul bearings, cobra oil pump and pickup tube, canton windage tray and 7qt. oil pan, ARP head and main studs, stock gaskets. (approx. 8.9:1 compression because of head chamber work)

Heads/Cams/Intake:
2001 heads that were ported/polished (don’t know flow #’s), swirl dams removed, MPH blower cams, 2001 intake with 75mm Dragon Plenum and Throttle Body

Exhaust:
FMS shorty header, MAC Prochamber h-pipe, MAC 2 ½” catback

Power Adder:
Vortech V1 S-trim with AFM 4” powerpipe, MPH Intercooler, SCT BA2800 MAF, Vortech Mini-Race bypass, 2.85” pulley, 8-rib setup, stock crank pulley,

Fuel System:
16-gallon plastic fuel cell mounted in trunk, -10AN lines to A1000 pump, 100-micron filter before and 10-micron filter after the pump, -8AN lines to XMP fuel rails, 60lb injectors, -8AN lines to Paxton boost sensitive adjustable fuel pressure regulator, -6AN lines to return.

Ignition:
TR-6 plugs gapped at .032”, FMS plug wires, MSD coil packs.

Misc:
3.73’s, EGR Delete

My goal is 600rwhp. No methanol injection, no Nitrous, no switching to turbo’s, etc. No electric water pumps, different heads, etc. I know I will have to overspin the blower to get there. I have seen a few s-trim guys do it, so here is my thinking:

Innovators West 10% OD crank pulley (7.5”)………20rwhp
LongTubes with shorty midpipe (MAC, BBK, etc)…25rwhp
Intake Manifold (logan, rr, bullit, etc.)………………30rwhp

Maybe these are way off…….I’m just throwing something out there. With those guesstimates, I should be right at 600rwhp. I would like to maximize the s-trim setup before upgrading to an SI, T, JT, or YSI head unit.

I want to do each of these mods individually and dyno to see where the gains came from. This won't happen overnight!

Are this rwhp estimates close for my setup? Any other ideas out there?

Thanks,
Derrick

That list sounds good enough to get you to your goal. I have a 10% O/D crank pulley for sale. If your interested pm me.

[DG98GT]

Thanks, but I've already got one. I guess I was a little confusing in my update. I now have a 2.7" blower pulley and a 10% OD crank pulley. Went to get tuned and had spark blowout at 548rwhp at 5600rpm. I have since tried a colder plug, gapped down to .024, and now I am gonna test the stock coils in the morning and take the MSD coils off. If that doesn't work, I am gonna buy a kenne bell boost-a-spark. I gained 80rwhp at 5500rpm, so if that holds true to 63-6400rpm..........I should be just a hair over 600rwhp. That is my goal for the car, but anything close to that would make me real happy. Hell, if it would just pull to 6400rpm without spark blowout and make only 560rwhp or so..........I would be happy!

[oxstang]

Well with that pulley set up spark blowout won't be the problem. Unless your running 8 rib and a thumpr tensioner your gonna get belt slip.

[01trublue Cobra]

Bigger blower or Turbo

[DG98GT]

Originally Posted by oxstang

Well with that pulley set up spark blowout won't be the problem. Unless your running 8 rib and a thumpr tensioner your gonna get belt slip.

No belt slip. I have an 8-rib setup, 3-bolt steel tensioner, vortech high-traction blower pulley, and the absolute tightest belt that will fit with all my strength.

It was making 15.1lbs. @5600 (where the peak power was) and 16.2 @5900rpm with WAY less power, so boost was going up and power was going WAAAAY down. I think it will make 18-19 if I can get it to pull to 6500rpms

[DG98GT]

Originally Posted by 01trublue Cobra

Bigger blower or Turbo

I found a good deal on a used JT-trim, but I am still trying to get my setup with the s-trim to make 600rwhp. I've seen some do it, so I know it's not impossible. I may have to go with a different intake to get there, but I plan on keeping my shorties/h-pipe for now.

A turbo will never be seen on this car..........that is for the next project car .

[oxstang]

Originally Posted by DG98GT

No belt slip. I have an 8-rib setup, 3-bolt steel tensioner, vortech high-traction blower pulley, and the absolute tightest belt that will fit with all my strength.

It was making 15.1lbs. @5600 (where the peak power was) and 16.2 @5900rpm with WAY less power, so boost was going up and power was going WAAAAY down. I think it will make 18-19 if I can get it to pull to 6500rpms

Hmmmmm. Why are you not making power past 5600rpms? Do you have a copy of your dyno sheet? I make power up to 7000rpms (haven't gone past that yet) I probably have a bit better parts but the only real difference is I have a TFS intake and you are running stock. Plus I am running a novi 2000 but that doesn't make a difference in this.

[DG98GT]

My tuner and I both agree it is spark blowout, he has no doubt, and I can feel/hear it, so I don't have many other ideas. I know of similar setups with more compression/boost that do not have spark blowout with all stock ignition parts, but..........I think it has something to do with the swirl dams being removed when I had the heads ported. Looking back now, I wish I never had any chamber work done. Maybe there is a weird air-flow issue going on that is causing my ignition system to have a hard time keeping up. I tested with the stock coils today, and although not as bad.........it's still there. I am gonna research the boost-a-spark a little more, but will probably order one next week. It would be a bandaid in this case, but unless I want to fork over money for different heads, I don't see anymore options.

I'll keep everyone updated.

[03GEETEE]

Strange question can you post a pic of your minirace bypass setup? I am having some bypass flutter with the bosch and am going to upgrade soon. Car has a V1 at 9lbs with a 3.33 pulley through a Air to Air FMIC making 435rwhp. Any help you could offer would be great.

Thanks.

JTR

[DG98GT]

Originally Posted by 03GEETEE

Strange question can you post a pic of your minirace bypass setup? I am having some bypass flutter with the bosch and am going to upgrade soon. Car has a V1 at 9lbs with a 3.33 pulley through a Air to Air FMIC making 435rwhp. Any help you could offer would be great.

Thanks.

JTR

The flutter you are getting is probably because of backwash from the bypass valve into your MAF. I had the same problem with the minirace, but only after I installed the intercooler. Basically, the air coming back into the powerpipe from the bypass valve is splitting and some air is going back through the supercharger (good), but some air is going to the MAF (bad). This air confuses the MAF and causes that bucking/surging issue you are feeling/hearing.

I included some pictures, but it might be hard to see. You need to take the powerpipe off of the car. Take the nipple that is feed from the bypass valve and break it off. Weld a patch over that hole. Make a new 1 1/4" hole closer to the supercharger, but still on the underneath side of the powerpipe. Weld on a 45-degree angle 1 1/4" pipe on there so it angles the air towards the supercharger. You may not have to go that big, but I did incase I get a different blower and push more boost down the road. Worked perfectly for me!

Good luck,
Derrick

[DG98GT]