SRT-10 heads

[omore001]

I've been trying to do some research on srt-10 viper heads and I keep on hearing that Greg Good does very good work on stock heads. I have researched Greg Good through different searches and come up with little support. Is there no website for greg good?

I am asking the people out there who have personally delt with greg good who have either inquired about their head work or have had work done to their heads.

My questions are: What kind of work is performed on the heads? What are the expenses being charged? What are the power increases with or without a cam?

Can anyone here direct me to a source where I can further educate myself on srt-10 heads and REASONABLE prices on stock head work with power gains and details included?

 

[Kai SRT10]

I have not dealt with Greg Good, but based on reputation alone, if I were going to get my stock heads done (as opposed to buying Stryker castings) he would be the guy I would go to.

You might try posting this query on the other forum. I know that Greg Good posts and reads there on occasion, and there are a fair number of folks I've seen on that forum that work with him.

http://www.viperalley.com/forum/viper-discussions-srt.html

 

[mike & juli]

I've been trying to do some research on srt-10 viper heads and I keep on hearing that Greg Good does very good work on stock heads. I have researched Greg Good through different searches and come up with little support. Is there no website for greg good?
I am asking the people out there who have personally delt with greg good who have either inquired about their head work or have had work done to their heads.
My questions are: What kind of work is performed on the heads? What are the expenses being charged? What are the power increases with or without a cam?
Can anyone here direct me to a source where I can further educate myself on srt-10 heads and REASONABLE prices on stock head work with power gains and details included?

There's nothing wrong with trying to contact Greg...also heard about his reputation, don't have personal experience...but in my book: It Never Hurts To Ask!!! Call him up and ask him, or PM him? ~juli

 

[Viper X]

JM Cylinder heads are very good too. www.jmcylinderheads.com

This is the outfit that makes the Styker heads. They also do head mods.

 

[viperjim]

I've been trying to do some research on srt-10 viper heads and I keep on hearing that Greg Good does very good work on stock heads. I have researched Greg Good through different searches and come up with little support. Is there no website for greg good?

I am asking the people out there who have personally delt with greg good who have either inquired about their head work or have had work done to their heads.

My questions are: What kind of work is performed on the heads? What are the expenses being charged? What are the power increases with or without a cam?

Can anyone here direct me to a source where I can further educate myself on srt-10 heads and REASONABLE prices on stock head work with power gains and details included?

I talked to Greg last week. $3500 buys you your heads ported and larger valves installed with better seats and guides. He said expect 60 RWHP. A cam could add another 20 HP.
It sounds like a cheaper alternative to a blower. Plus it is hidden if you go to sell.

Jim

 

[omore001]

$3500 for another 60 rwhp? Damn thats over half way to paxton route. Guess there are much more cost effective methods to bump up the power.

 

[Paul Hawker]

NOS is the cheapest HP. Supercharger comes next, Twin Turbo's cost a bit more, and Naturally aspirated cost the most.

More important than most people realize is how much different the driving experience is with each modification. Throttle response, sound, reliability, are sometimes overlooked in our focus on HP numbers.

 

[black mamba1]

Greg Good heads provide the most bang for the buck for porting and polishing I believe. Styker heads have better cooling and may have slightly more power, but cost more. There are advantages to going NA, you can get up to 600-625 rwhp by doing head work and adding a cam and exhaust and VEC 3. Yes, it will cost you more that simply slapping on a Paxton, but the car will be more reliable, run cooler, sound better, and handle better due to less weight over the nose that the Paxton brings. But you are correct, you can get 150-200 hp by simply adding a Paxton for around the same price. I am in the same dilemma. If 600-625 rwhp is enough for you and you can afford the NA approach, that is better. If you want more hp, you have no choice but to go s/c or Twin Turbo.

 

[Joseph Dell]

$3500 for another 60 rwhp? Damn thats over half way to paxton route. Guess there are much more cost effective methods to bump up the power.

power comes from a combination of factors. headers for a viper are 1-2k and get you 10rwhp... but when combined w/ a supercharger get you a lot more. and when combined with a properly built combination yields even more power.

When i upgraded my heads from a stage2 port job to a stage3 port job, i picked up 115rwhp changing NOTHING else. the stage2 was a tunerX and the stage3 was Greg Good working his magic.

Heads are the biggest restriction on a car. you can run stock heads with a paxton and try to squeeze as much power as you can out of it... and over 650-700rwhp your car will have a hard time making power. open up the heads and all of a sudden your car can make over 1200+rwhp. Yes, it is that dramatic a change.

If you are looking to make ONE mod and not touch anything else, get a SC or NOS.

Oh... and the striker heads are 7k so that is MORE than the price of a paxton. but if you think you can just slap some heads on a car and magically make power i have a bridge to sell you. It's all in the tune.

Greg Good is the premier head-porter for vipers. just b/c he doesn't have a web site doesn't mean that he doesn't exist. try the SEARCH button. here's one that comes to mind: http://forums.viperclub.org/showthread.php?t=605492

JD

 

[Nader]

Is ther any with a Gen III running Greg Good heads with a stock cam and tune? If so what kind of power are you making and does the car lose some drivability? Is there any concern about loosing some low end power or torque?

Also are there any cam shaft suggestions since it maybe a good idea to change the cam while you have everything unbuttoned.

 

[Red Snake]

A lower cost alternative is Joe Donovan at PBJ Performance.
Joe ported my heads (and larger valves) and they flowed within about 3 cfm of the Stage 3 Goode heads for about $1k less.
Joes heads outflow JM's stage 3 heads. Another truck guy paid over $4k for the JM stage 3s (ported OEMs) and they flowed about 6 cfm less than PBJs and about 10 cfm less than Goode's.

I went with a mild cam upgrade (cut for torque), and picked up over 90 ft lbs of torque and over 60 rwhp - PEAK. I picked up even more in the lower rpm band.

 

[Nader]

Wow good numbers. What are you running to tune it? What was the total cost of the setup?

 

[omore001]

That is very impressive N/A, can you elaborate more om Joe Donovan and PBJ Performace? They charged you around $2500 for a port with larger valves that flows just within greg good stage 3 specs? What about the cam, what was everything you installed? How much did you end you spending on the long run?

 

[Joseph Dell]

Joe, Greg, Jeff... they can all work magic on heads. without a cam you are wasting your time. get your engine builder to spec out a cam for you. it'll be well worth it.

 

[Red Snake]

Wow good numbers. What are you running to tune it? What was the total cost of the setup?

Joe tuned it with a VEC 2.

I also installed T&D rollers but I don't think that contributed much (if any) to the gains, as the GEN3s are already 1.7s. Joe also ported the intake runners to port match the heads. Again, helpful but really a minimal mod.

As Joseph Dell stated, most of the gain is in the heads/cam combo. Joe spec'd my cam for low end torque due to the weight of the SRT trucks. I am sure a Viper could use a more radical cam and make some bigger hp #'s than I did.

I put down 535 rwhp and 566 rwtrq after Joe's tune (SAE corrected). It was pretty hot out that day too so there may even be a few more ponies in there. I plan to re-dyno with the better air in a couple of weeks.

Here's a short clip of the cam lope at idle.

http://media.putfile.com/Truck-cam-69

As for the total price, let's just say that PBJ was way more reasonable than anyone else I contacted for the work.