Thread: LOTs of helpful modding/3800 info

Found this theselinks today. Some very useful stuff. Anything from valvetrain geometry to intake flow rates to explanations of KR. all credit goes to ZZP unless otherwise noted in the article, and not me.

I believe these to be mostly accurate and are parallel to what I have been hearing members tell other members.

*Disclaimer* *dont believe everything you read on ZZP*


Series 3 HV3 intall
Penetrating Oils Compared
Belt sizes, routing and pulley diagram
Valve springs and retainers
Pushrod length and lifter preload
Intercooler pumps
R&D on the Walbro fuel pump by Dig Ken
FREE MOD: Ground Wire Upgrade
FREE MOD: Removing the Engine Brackets
FREE MOD: Larger oil filter
FREE MOD: Improving Throttle Body Airflow!
Mods You Don't Need
Intake Designs, Airflow Testing and Theories
How to Achieve Neck Snapping 60' Launches
About Knock Retard (KR)
KR - How To Fight?
U-Bend Replacement Test by Jim Wierzbicki
97 - 06 GTP Model Differences
Eliminating KR
Drag Racing Tips

Yep... Old articles there...

i stopped at ZZP

Originally Posted by Fivefingerdeathpunch

i stopped at ZZP

Good choice.

Um yeah I don't believe anything they say, like its safe to run a 3.5 on a stock car without mods........ their catback makes more hp than anyone else's

If you'd read they said the stock flows to 300whp. I know they are old articles but that doesnt mean they are all bogus. This is for the guys who havent been here forever and would still learn from reading the safely modding your 3800 thread.

Unforutunately there's possibly more bad info in there than good.

"run a 3.4 pulley and our pcm, your car will love it".

"If you plan on doing other modifications as well then the 3.4" pulley is a better choice. It requires a smaller belt or an oversized tensioner pulley. The 3.4 will give ~25 additional HP. Supporting mods that are required include colder Tstat, stage 1 throttle body, colder spark plugs, cold air intake, TB spacer, we recommend at minimum installing the Ubend delete, but the best exhaust mod is our downpipe."

Yes the TB spacer is bogus, (unless its needed for their tb?)

Im not asking for this to be a sticky, but zzp usually tests the things they claim. If it would be more helpful I could separate out the ones that arent exactly relevant anymore.

Dude...are you kidding?

This is the exact reason I typed this:

http://www.grandprixforums.net/safel...car-17482.html

Most of...if not all of that info is old, outdated, and wrong.

RWHP...

I had no idea.

Better?

Yes i know. They gave him credit.

I think you care too much.

Get headers.

Gain 20 FWHP.

Cheaper than a ported blower and a bunch of other crap.

I go fastest.

Originally Posted by matt5112

http://www.zzperformance.com/downloa...omparison1.pdf

15* difference for the cost of ceramic coating?

Which is $300-600 depending on what you're having done.

3% power loss from higher IAT.

(high estimate based CAI_Primer_Thermal as well as assuming that the external temp of the intake tubing is the same as the internal... which it probably isnt.)

280 CHP.

3% is 8.4 HP.

*.80 for 6.72 whp.



Was looking at ported blowers on 540 WHP CTS-V... He gained 20 WHP.

3.7% increase.

so 3.7 on 280 is 10.36 CHP.

8.3 WHP for the cost of a ported blower. (free to 500 for ZZP)



Interesting when you put into perspective the cost of these mods for the gains you achieve.

Are you saying thats good or bad? I would take 8WHP anyday, but maybe not for $500+. Some people like to do whatever they can to go faster.

He's saying for $ per HP...ZZP's prices and the gains had on these cars is whack.