TPI SBC refresh with G6 6 speed trany upgrade (Page 1/16)
Alex4mula OCT 07, 10:39 AM
It is that time again. After two years with my current setup I wanted more. Sounds familiar? Well, since I did my original swap I knew later on I would upgrade it with real nice parts. I could have wait but I have been buying some bargain parts here and there (intake) and the whole thing was triggered by an unexpected clutch failure (http://www.fiero.nl/forum/Forum2/HTML/077269.html) and an unusual great deal at Ebay for a brand new G6 trany. So the car goes into the operating room and down goes the cradle. My TPI setup consisted of a flat top piston roller block with stock heads and intake and a Crane HR-276-2S-12 cam. It put 236rwhp and 344rwtq. The key upgraded parts that will go in now are these;
- 52mm TB
- Ported upper plenum )by Corvette Plenums)
- AS&M big runners
- Edelbrock base
- AFR new Eliminator 180cc heads
- GMPP 1.6 full roller rockers
- Comp. Cams new XFI 268 cam
And of course for drive train the new F40 6 speed trany using Archie kit. Goal is to have some more power but not a drag car. I dirve this car very often so I want it to be enjoyable to drive without glitches and fuss nor lopy racing idle. For that goal I'm sure the new trany will be a big part (smooth shifts!). So here I will try to show you my journey and experience getting the F40 in. At then end after tuning I will dyno the car and see how much better powerwise it will be. Hope you like it

Original build thread: http://www.fiero.nl/forum/Archives/Archive-000002/HTML/20060206-1-046290.html

Patient in operating room;


Gutted with new banger box waiting

------------------
Palm Beach Fieros
http://pbfieros.tripod.com

[This message has been edited by Alex4mula (edited 10-07-2006).]

Alex4mula OCT 07, 12:45 PM
Some of the upgrades. Can you beleive that someone could ship a trany in a box full of plastic popcorn?? I can't beleive the only damage was a cracked speedo connector




Intake parts already ported and powder coated



John Boelte OCT 07, 01:28 PM
Wow, that's really cool! I'm envious!
Alex4mula OCT 07, 02:50 PM
Here is more detail why these TPI parts are much better. This is the plenum. It was ported by Corvette Plenums. Awesome job they do. You can see how the TB rea and runners are opened up to the max.




These is a comparison of the AS&M runners to the stock units. These are the highest flowing runners you can get for a stock TPI look.



The caliper shows the stock runners diameter.


These is the Edelbrock base ported to match the runners.

[This message has been edited by Alex4mula (edited 10-07-2006).]

Alex4mula OCT 07, 02:54 PM
And of course the key protagonist

Cooter OCT 07, 03:17 PM
On my old Corvette, I added the BigMouth intake base, aftermarket semi-siamesed runners and ported the plenum to match (pretty much like yours) and on a stock iron head engine, the car picked up 2/10's in the quarter. I am very interested to see what kind of numbers you will put down with the new parts.
mafv8 OCT 07, 05:42 PM
Alex, good luck with the re-fresh and remember check everything at least twice, especially the engine work, it can be frustrating and expensive when it goes wrong as I know only to well. I did pick-up my rebuilt engine this week but due to time and the coming of winter I don't expect to get it back together until spring. So I will just enjoy your build up, and look forward to the dyno run at the end, what sort of numbers are you hoping for ?

------------------
84SE, aero body, 5 speed and a 350 V8

Jake_Dragon OCT 07, 06:42 PM
Nice, when your done I want to come over and take a look. I will have to do something with mine sooner or later.
Alex4mula OCT 07, 08:58 PM
mafv8; I hear you. I saw your very sad experience. I don't trust myself so I'm taking the heads,valvetrain and cam to be installed at my machine shop to be sure everything is ok. They degree the cam, ensure valve geometry is perfect after head shave and also shave the intake to ensure correct ftness.

Here are the power centerpiece of this refresh. These are the new design AFR Eliminator heads. 180cc with 75cc chambers but will be milled to get a 10:1 compression ratio. These puppies flow over 260 CFM maintaining great low speed velocity for good torque low end. CNC ported chambers and ports with springs for up to .600 lift. Also these new design use LSx type 8mm valves and springs for less weight








Reise OCT 07, 10:21 PM
I'm a machininst by trade and I would have been proud to claim those heads as work done by me those things are exquisite!!! I hope that this build up will greatly increase the fun potential of your lil beast.....almost got kicked out of a junkyard today cause one of the guy's was mocking me when I asked him about a decent 4.9L to put in my lil 87 notchie....but thats a different story....good luck with all the mods and please post all the pics you can take without taking from build time....also why the F40 tranny i've heard that 1st was way too short and that it was a very notchie tranny? but reguardless I hope you enjoy!!

Laters

Brian