Hi from TN

[2ljd]

Welcome!

[32valvZ]

Hello from Colorado!

[Curtis]

Well thank God for fender badges....that was clue one
Car showed up at the dealer on Tuesday, owner traded for a ragtop caddy corvette and was listed late Friday on the web with just a few pictures.
Cargurus said 1991 corvette coupe then there dealer website said the same but true car had it pop up as a ZR-1 because of the 8 in the vin that I had just read about on anther ad.

Now as asked earlier failures
Don’t waste money on cheap *** emission solenoids for the secondaries they leak and system didn’t work after wasting 50 dollars.
300zx tt boost solenoid did but requires a t and a small bleed at the map under the ecu....
Radiator install did with friends at his garage so a out of my element and 2am .
So bad things happened with the last bolt.
Last bolt was the air box hold down thumb screws .... plastic has shifted up allowing the bolt to go deeper ....yep stabbed ac condenser...... hissing followed by a lot of adjectives.....
Besides that car really is easy and figuring out as I go....
did discover magic erasers cleaning pads work wonderfully on glass....

I did see where you guys are going to the mountains of North Carolina
Actually that’s where I grew up so you guys want normal cruising roads that’s easy and you can figure it out but if you want technical hang it all out decreasing radius off camber roads the local bike guys use that have never made it to the web I got that covered...drivers beware nc road dept are cheap asses if the sign says 15 it’s not a typo..... seen a lot of bad crashes as a kid....

[Curtis]

Originally Posted by Paul Workman

Congratz and WELCOME to the ZR-1 Net Registry! Best of luck with your modifications. DO post up your progress and successes & failures too (we all are still learning!!).

Speaking of learning, I never heard of "POLY PORT" architecture. And, per your suggestion, I Googled it and found this guy who was kinda fun to watch, tho not a big fan of "POLY' guy himself, but did define the concept at least.

https://www.youtube.com/watch?v=mx6p...TgsKUFR4AaABAg

Well he kinda did.... thing is you buy a half set of 1 or 2 mm oversized valves and have a machine shop lined up that can cut seats and valves properly....

Port job is normal stay off the short turn radius open up open more than the other raise the roof heart shape on that bowl blend gasket match polished chambers. Guy that did my buddies b series head valve job had a motorcycle shop and knew what he was doing.... guy in video has never done it or at least properly...interweb you tube hero..... reason for doing my buddies he got a new exhaust gasket from eBay and figure more would be better..... well he got into the oil drain and we had to machine out the drain larger and then press fit a offset bushing and go to matching up everything else so a month later and probably 75 hours of measuring cutting blending car got crazy.... 627 on 19 psi with like no timing all this in a car that weighed in at 2150 with him in it..... built a lot of stuff over the years and only car l’ve ever been scared of....day we took it out l saw 26 psi pop up sure that was in the 750/800 range at half the weight of a normal car and wrong wheel drive and brakes the size of dessert plates.... don’t like ice skating in cars

So if you got 20 minutes and like to read tech articles enjoy Mr Vizards article

http://www.motortecmagazine.net/the-...valve-engines/

[EvanZR1]

Always interested to see someone try something new, but I'm not sure I'd be willing to sacrifice a pair of LT5 heads for what is effectively an experiment. Haibeck (zr1specialist.com), Pete and others have really perfected the porting of the LT5 where it's very achievable to get 500+HP out of a stock cube, stock cams LT5. If there was more power to be had by an alternate head porting style, I would be they would have already found it. I'd strongly advise you to talk to Marc (Haibeck) or Pete (Polatsidis) before doing something that may cost you big $$.

If you really want more power than just the standard mod path, PM Pete and talk to him about his 391cid closed desk, or even his 441cid. I've got his 391 with stage 2 cams and full porting, and it's all I want for street use at 600HP. Pretty sure he's still got a 391 engine for sale, so you wouldn't even have to wait for the normal build time.