Through my whiny post about being disappointed about my h/c upgrade, two things have consistently come up. 1) use the hardened pushrods... I GOT IT and they are IN. 2) The Fast 90/90 set up is the way to go, but here is the question:

It seems as though buying a Fast and bolting it on is nominally better than the LS6 and seemingly not worth the money, but having Mamo (and apparently ONLY Mamo) port it and putting it on is one incredibly impressive set up, which means buying it new because porting a used one is almost out of the question. SO, am I even close? Yes, I know opinions differ, and everything is subjective, but is does seem as though he is the man when it comes to that intake, and that thread about the "phantom vendor" that ported the Fast scared the crap out of me.

 

Tony's 90/90 is a nice piece, but in reading your other thread it doesn't seem that you have identified a clear problem or that you even have a problem. Have you considered taking it to a different dyno and getting one pull for comparison?

 

I am posting this because regardless of what the dyno says, I know that I will be doing more upgrades, and I want to get a head start on gathering the things I will need. Trust me, when I get the dyno graph, I will definitely be posting it to get everyone's opinion whether or not there is a problem. You guys have helped me tremendously with this car and the two threads aren't really related. Like I said, I might have been a tad overzealous about whining so much before getting it dyno'd, but like it has been said 100000 times, the modding won't stop, and it looks like this will be the next piece of the puzzle, unless of course that graph comes back looking like crap...

 

You can port a used Fast. I got mine used for $625 and had Cartek port it for me. I picked up 11rwhp from it over my Cartek ported ls6 intake. Gains were across the board. Only picked up 1rwtq but area under the curve showed big gains. One thing I should note is the first dyno with the ls6 was made with stock magnesium rims and nonrunflats and the Fast dyno was made on Ruff Racing 20" rims.

 

Spin Monster ( forum vendor ) also ports Fast products. Again must be new.

 

 

Why are people hesitant to port a used manifold??? Whats different or happens if you port a used one?

BC

 

I'd like to know too. I ported mine when it was used. No problems at all.

 

Bill,

I will port a used intake but I charge $50 more to do so and honestly that doesn't really cover the extra BS.

Port shavings tend to stick to the walls (of a used intake) as your removing them creating a situation where you are constantly having to blow out the port you are working on to see what you are doing. I would rather do a new intake six days of the week and twice on Sunday and fore go the extra $50. I also require any customer considering sending me one to spend time getting it as free of oil and carbon as they can. If its really nasty when I get it I wont even work on it. Some customers dont even want to clean their own intakes which I find kind of amusing and just opt for me to go new.

Anyway, I hope this clears up the mysterious "used intake" situation although I think other vendors may have different reasons such as not making any additional money on the actual intake which would normally add a little more profit in the job.

Tony

 

Tony

I ported my own and I can see now why the port job is expensive. I can only imagine what steps that you went through to prefect your porting. I think I did a pretty good job. I would like to get a GRADE from the master. Dont be afraid to lay it out!

Heres a post from PHILL C5 VETTE that I posted some pictures of how mine turned out. Let me know what you think. I know that you dont give out secrets but, I would enjoy a comment from a PRO!

http://forums.corvetteforum.com/show...post1566902689

Thanks for answering my question on the used intake.

Bill Curlee

 

Bill,

Obviously you invested a lot of time as to do it right a lot of time must be invested. I would have needed to see other pics to better gauge what you may or may not of left under the table but I would say shooting from the hip you probably got close to the potential of what a better ported FAST can offer.

Whats funny is someone that has never even flipped the switch of a flowbench can go in with a hardroll and spend 30 mins and call it a ported FAST when he's done.....I can spend many hours completely reshaping some key areas of the manifold that I used my flowbench(and the dyno to some degree) to determine which were optimal shapes and contours, remove half a coffee can full of plastic shavings, make every port exit look exactly the same (my work is very neat), and when I'm done its still called a "ported FAST"

You get what you pay for and hopefully you get my point.

While admittedly I am on the pricier side of what a few of the shops out there charge, I am also confident that my workmanship and the extent of what I do justifies the price of admission....as a cylinder head designer and engine builder by trade, I may have an edge on most people attempting this. Consider that over the last few years I have probably ported at least a hundred manifolds all told, not a single customer that actually received one from me questioned the money spent (and bad news travels FAST!)

Its not for everyone....but if your looking to really optimize your set-up and you already have invested in a premium set of heads (the better the heads the better the gains from the optimized intake), the porting work basically doubles the gains from the swap making it (IMO) a no brainer.

Cheers,
Tony

 

The overall gains i got just from adding a ported FAST 90/90 was incredible. My torque jumped past 400 RWT from my previous 384. Not to mention the throttle response is so much better too

 

Tony

Thank you very much for your review and assistance. Yes,,,,there was a LOT of time invested in this project and time is money. I for one appreciate all the great information that you provide us on this intake. YOU ARE THE STANDARD to follow.

--Funny thing that you mentioned the coffee can full of dust.
As I was porting the manifold the mounds of plastic duct was quite alarming! I started second guessing my self wondering if I was going to have a $750 desk ornament.

Once it was done, I could see positive progress and that I didn't destroy it. Looking down the runner through that ported intake and seeing almost the entire back side of the intake valve is quite impressive~ You know its ready for business!

I cant wait to get a new clutch in my car and re dyno it to see it all come together!

Thanks again

Bill Curlee

 

No problem Bill....you also provide a wealth of great information for the forum members yourself and are obviously a huge asset to the board.

I have to ask what clutch you plan on running?....you know the right one (or the wrong one) can have either a negative or a positive effect on your RWHP numbers (obviously your looking for the latter....LOL)

Regards,
Tony

 

Tony

I am considering a SPEC Duel disk or Fridenza Duel disk. I know its over kill for my mods 450 RWHP 415-420 Tq but,,I only want to do this clutch install ONCE. I have a couple of people recommending both clutches but, Im still open for recommendations or good info.

I hear that the Textraila clutch is very heavy. Im guessing that what your talking about when you stated: "you know the right one (or the wrong one) can have either a negative or a positive effect on your RWHP numbers (obviously your looking for the latter....LOL)"

What clutches do you like?

I have to go to Guam for a month on business and when I get back, I will install a clutch.

 

 

 

I have skirted that trip for a while

If you go with the Fidanza, let me know I would love to get a gander at it before you install it.

 

For your answer, go take a look at the Corvette clutch descriptions on the RPS clutch website. I don't know if they are a forum sponsor or not, so...

turboclutch - dot - com

-Rick

 

I have a nice clean used fast 90 and new LS2 throttle body. They are unported. I plan on installing when I do head/cam next spring. If I am only going for 450 rwhp should I even bother with porting?