Last Call

iTrader: (4)

500/500 should be attainable. You will probably need about 10psi and a good flowing exhaust. Maybe larger injectors or a methanol kit to support the fuel requirements.

EVILGMC

iTrader: (47)

yes, i have a cam 224/230 .600 116lsa on a dynojet

Bromaguire

Interesting thats about 450whp on a mustang. I'm running about 9lbs with my whipple with a completely stock internal 6.0 and making about 400whp on a mustang dyno.

How much power is a good set of heads and cams supposed to add to a blower setup without changing pulleys to compensate for boost loss?

Last Call

iTrader: (4)

I wouldnt get too caught up in the numbers... The track will be more representative of the true power output. I made 370rwhp on a mustang dyno with a completely stock 5.3 and radix 112. What have you ran at the track at the 400rwhp level and what is your race weight?

I dont know of too many people running aftermarket/ported factory heads with a blower set up. Most of the Maggie guys have used N20 as opposed to changing heads.

trever1t

iTrader: (14)

~11lbs with a 75 hit of n2o

Bromaguire

No I agree you can't compare numbers exactly but it gives you at least an estimate of what kind of power is being made.

I ran a 14.4 on my second try this summer. This was on heavy 24's also. I had never been to the track in my Denali before so I still had some room to improve. I was only running 7psi about 30-45 hp less than I have now. I've also changed to a built 4l80e since then and put on much lighter 20's.

I am not sure exactly what I would run right now but its definitely in the mid to low 13's. Last weekend I walked an evo8 which runs 13's stock. I have timed my 0-60 and its in the 4.2 range.

I would guess my race weight somewhere around 6500lbs.

I am debating on whether to build my engine into a 408 or just make it a forged 6.0 with heads,cams, etc.

Last Call

iTrader: (4)

A full bolt on 6.0 with 9-10 psi will make more power than a 408 with much better driveability. I dont think heads will make a ton more power without the ability to effeciently make up the lost boost. A good exhaust system with LT headers and true duals will help as well.

Bromaguire

I meant I'm going to build my motor with the blower but I'm trying to figure out if building it to a 408 would be much better than just building my 6.0 with forged parts. I figure with a 408 I'm going to max my blower out so my plan in addition to the motor is to try to fit a 3.4 or 3.3 whipple on there or maybe add a turbo in addition to the blower.

Last Call

iTrader: (4)

A 408 will make more power than a 6.0 at a lower boost level. I didnt know Whipple was making a kit for the LSX engines yet? Or is it just the manifold and blower? Are they based on the car or truck accessories?

I would add a big blower before a smaller blower and turbo. A bigger blower will need an 8 or 10 rib belt configuration to get more than 10 psi.

1989k1500

iTrader: (23)

Should be easily doable. Obviously theres guys doing it without needing much boost.

That would depend on the dyno and the operator. Baker Engineerings Dynojet reads a few percent higher than most Mustang dynos, not 20% higher. Their race cars show around 17% drivetrain loss.