Driver impressions from those who did some porting please

[efnfast]

There are a couple guys out there that do very good work on these engines. Marc being one of them.
Pete did the heavy lifting on my car. Again, doing it piece meal, I'm sure I've got more than the 10 or so grand these guys all hover around.
I'm 451 at the wheels. Wife doesn't like the car anymore, can't wipe the grin off my face.

[XfireZ51]

I just posted a .pdf on my thread re:Tuning the LT5. You will find a comparative dyno sheet there that shows the diff in hp and torque between three successive upgrades that I did on my car. Should give u a benchmark on the Cost/Benefit of each. OTOH, there are some that don’t care about cost/benefit. We just want to eek out as much power as possible.

[Kevin]

drove my car, got out, hopped in a ported car that made 440 wheel. night and day. no downside, all up. If I had the money I'd have it done already

[PhillipsLT5]

422RWHP all good no cons no buyers remorse


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[We Gone]

Just do it. took me 10 years to get it done no regrets

[GOLDCYLON]

Originally Posted by billschroeder5842

Hey all, I like "driving impressions" (not so much of a technical discussions on how our cars respond to some minor work.

I have a '91 that is bone stock except for a Haibeck chip and a MagnaFlow low restriction resonator. I drive the car about 3-4 times a week and would be described as the occasional "spirited" driver. No tracks, no racing but more of a cruiser that will wind it up to 7k rpms on the interstate on-ramp. I take dependability over performance.

What im considering is porting the plenum, adding headers with lower (probably a Corsa) restriction exhaust, new injectors and a decent tune. My guess is about $5800-$6500 all in.

So,
What is the car going to "feel" like? Better/more low end torque? Of is this a midrange or higher RPM combo? Are there any "unforeseen" reliability or maintenance issues? Is it worth the bang for the buck for my driving style of "dependable with an occasional punch?"

I'd appreciate anyone's thoughts from somebody who has "been there and done that..."

Bill I have both a modded and lightly modded Z I enjoy them both equally but the porting really wakes up the car and it is a night and day difference. There is no down side to the mods.

[billschroeder5842]

Thanks guys- this is what I'm looking for. From what I'm reading, a 4.10 gear, porting the tops and headers are a low risk , super high (fun) return on investment.

[XfireZ51]

Originally Posted by billschroeder5842

Thanks guys- this is what I'm looking for. From what I'm reading, a 4.10 gear, porting the tops and headers are a low risk , super high (fun) return on investment.

U got it.

[Kevin]

Originally Posted by billschroeder5842

Thanks guys- this is what I'm looking for. From what I'm reading, a 4.10 gear, porting the tops and headers are a low risk , super high (fun) return on investment.

The downside is having to buy rear tires more often.

[-=Jeff=-]

I will agree with the 4.10s making the car fun. but my car is still not ported and honestly, no plans to port any time soon