600rwhp on pump gas

[po-po 5.0]

I'm planning out my build, and this is my goal. I'd like to make 600rwhp on pump gas, no nitrous, no meth with either a centri or single turbo although at this point I'm leaning towards a centri because of packaging.

Is 600hp doable at 10:1 compression w/93 octane? Should I be build a 9:1 compression motor? I'd like to run as high a compression as is possible to reach my goals for the best off-boost performance as this is a street car that'll see the road course a time or two a year.

 

[01yellercobra]

I was at high 500's on 91 octane. So I would think 600 is doable on 93. I'm at 9.5:1 and never had any issues. Not that I had a chance to crank the boost up. I was only at 14psi.

I would seriously consider going turbo though. The power potential is a lot better.

 

[po-po 5.0]

I was at high 500's on 91 octane. So I would think 600 is doable on 93. I'm at 9.5:1 and never had any issues. Not that I had a chance to crank the boost up. I was only at 14psi.

I would seriously consider going turbo though. The power potential is a lot better.

I realize that I'm sacrificing power to spin a blower vs a turbo, but the low hanging exhaust tubing and overall complexity of turbo kits puts me off a bit. Not that I'm incapable of doing an install, but that I want something I can drive without worrying about road debris ripping my exhaust off and/or having to tighten clamps every few days.

Also, the car will remain a stick car on regular street tires making the turbo harder to spool and harder to hook up. I'm still considering it, though.

 

[98 Saleen Cobra]

I wouldn't consider it if you open track.. 600rwhp can be done easily with a proper setup centri car..

 

[po-po 5.0]

I wouldn't consider it if you open track.. 600rwhp can be done easily with a proper setup centri car..

Your car is in the power envelope I'm looking for: what compression are you running in that motor, and how is the off-boost performance?

 

[98 Saleen Cobra]

8:5.1 compression for safety reason, I have 4.10's so off boost is still awesome.. I had a 9.1 compression motor and notice no difference at all. My car is also tuned super conservative.. 18psi and 18 degrees of timing and a super fat AFR.. My tuner says there is another 50+rwhp on just my street tune alone

 

[Jamie R.]

592 rwhp on pump gas here. Simple combo. D1sc with a 3.2 pulley, '04 term long block, my intake cams, ported intake, & 8 rib conversion. Off boost the car drives fine and under boost pulls hard with the 4.30 gear.

Jamie R.
'01 Silver Cobra on the Cover of MM&FF's August '07 Issue

 

[01yellercobra]

600hp on regular street tires is going to be hard to hook no matter what power adder.

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[po-po 5.0]

600hp on regular street tires is going to be hard to hook no matter what power adder.

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true enough, but that's not really a reason to make things any more difficult than they have to be.

 

[98 Saleen Cobra]

It'll hook.. you just can't go around stabbing it in 1-2nd.. I have KDW2's and I hook from 3rd every time.. 1st and 2nd are useless though lol.

 

[01yellercobra]

It'll hook.. you just can't go around stabbing it in 1-2nd.. I have KDW2's and I hook from 3rd every time.. 1st and 2nd are useless though lol.

That's why I went to DR's. I still remember shortly after I put the blower on I was getting on the freeway and misjudged traffic so I goosed it. After staring at traffic through the driver side window I got off the freeway, went to Discount Tire, and had drag radials installed. Never had an issue after that.

 

[01greycobra]

My car makes 638 on 93 octane. My motor runs 9.0:1 compression. I think you'll be fine with what you're looking for

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[01greycobra]

Also, Mickey Thompson et street is the only tire I've had success with on the street. Love em

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[po-po 5.0]

My car makes 638 on 93 octane. My motor runs 9.0:1 compression. I think you'll be fine with what you're looking for

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what kind of timing are you able to run in your combo?

 

[ROCKNROLLA562]

+1 3rd gear always hooks