Author Topic: 1978 EFI W72  (Read 1345 times)

0 Members and 1 Guest are viewing this topic.

Offline Chvywolf

  • Jr. Member
  • *
  • Posts: 33
  • Referrals: 0
1978 EFI W72
« on: January 02, 2011, 09:46:01 AM »
Well, I thought I had a post up already of my little project but I couldn’t find. So since I actually have something to update after better than a year, I thought I’d share.

For a recap: 1978 Was Gold on Tan W72 A4. Why it is now a really faded red, I can only guess, but I’ll bet real money that beer was involved.



Since the A/C wasn’t technicaly removed (found it in the trunk) I can only guess that it was used for weight distribution. And holy crap does it weigh a lot.



Build sheet



Ok, meat of the update. Block was in OK shape. Had to go .030 over, other than that, all was good with it. 6X-4 cc’ed at 93, had them shave to get 91. With the new pistons, standard deck, head gaskets etc. I should be sitting pretty at 9:1 compression.



Rotating assembly is all balanced. Went with SRS pistons, RPMMAX h-beam rods, Billet Flywheel. Currently have a friend getting me a custom hydraulic roller cam for an EFI application since nobody makes one for a Pontiac.

Making a little progress here and there. Like the old saying goes, how do you eat an elephant? One bite at a time.
Steve

2008 2500HD Duramax CCSB
2002 Trans Am
1989 Formula Pontiac 400 T56 "Drag Week" car.
1980 Formula... something and parts

Offline Frode_skj

  • Sr. Member
  • ***
  • Posts: 1156
  • Referrals: 0
Re: 1978 EFI W72
« Reply #1 on: January 03, 2011, 01:22:38 PM »
Looks like a nice project :) what color do you have in mind for the car?
"79 Trans Am tenth Anniversary Edition"
"81 Turbo Trans Am"
Sad to see that people part out T\A's :( especially saveable ones

Offline hada76

  • Adv. Member
  • ****
  • Posts: 2808
  • '79 WS6 W72 M21
  • Referrals: 0
Re: 1978 EFI W72
« Reply #2 on: January 03, 2011, 02:42:08 PM »
was the ship to address blank on B/S or did you block it? is that unusual?
'76 T/A 455 4sp   sold
'78 T/A Y88 auto  sold
'79 T/A WS6 4sp
'70 Z/28 4sp

jeff

Offline Chvywolf

  • Jr. Member
  • *
  • Posts: 33
  • Referrals: 0
Re: 1978 EFI W72
« Reply #3 on: January 04, 2011, 08:34:09 AM »
Imperial Blue Metalic I think is the official name of the color. Basicly that really dark high metalic blue on the new chevy trucks. All the stripes and bird with be grey. Plus the YO 17x8 snowflake with colored parts painted to match the stripes.

Thats the plan at the moment. We'll see how long it stays together.  ;D

I didn't black out anything on the build sheet. Even went back and looked at it, just not printed. I have no idea if they normaly come that way or not. This one was laminated and given to me with the car. It's mostly stripped now, and I haven't come across another one in any of the usual locations. Gas tank is yet to be dropped, but that's about the only hiding spot left.
Steve

2008 2500HD Duramax CCSB
2002 Trans Am
1989 Formula Pontiac 400 T56 "Drag Week" car.
1980 Formula... something and parts

Offline 4SPEED

  • Ohio Firebirds
  • Lifetime Member
  • *****
  • Posts: 7321
  • NFTAC & POCI Member
  • Referrals: 0
Re: 1978 EFI W72
« Reply #4 on: January 04, 2011, 06:32:19 PM »
77 W72 TransAM  (SOLD)
79 TransAM 4SPEED

Offline Chvywolf

  • Jr. Member
  • *
  • Posts: 33
  • Referrals: 0
Re: 1978 EFI W72
« Reply #5 on: January 05, 2011, 10:27:56 AM »
DOH!!!! Yup, there it is. Guess I didn't look hard enough. Funny it wasn't in my post history. Oh well.

Anyway, camshaft is being done. Not sure on the specs yet, but I trust the guy to get me what I want. Looking for lots of low end tq. Since it will be a full roller motor, and hydraulic roller lifters are rather heavy, I won't be turning this one much past 5500 r's. Unless I miss a shift that is. Hopefully the rev limiter will keep me out of trouble.
Steve

2008 2500HD Duramax CCSB
2002 Trans Am
1989 Formula Pontiac 400 T56 "Drag Week" car.
1980 Formula... something and parts

Offline TAKID455

  • Sr. Member
  • ***
  • Posts: 1179
  • Referrals: 0
Re: 1978 EFI W72
« Reply #6 on: January 05, 2011, 10:26:54 PM »
What EFI system are you looking at installing? I have play with some in the past and have my thoughts. Also, it depends highly on what yo want to accomplish.

The air cleaner would actually work better if the holes were sealed. The thought was to increase air flow, but in actuality they let pressurized air out.
2nd Gen Engineering
Specializing in Suspension and Driveline Performance Engineering
Custom/ Racing/ Restorations

Offline Chvywolf

  • Jr. Member
  • *
  • Posts: 33
  • Referrals: 0
Re: 1978 EFI W72
« Reply #7 on: January 06, 2011, 02:30:50 PM »
I'll be using an LS1 ECM on the car. I'm half-heartedly looking for a whole 99-02 Camaro/Trans Am that I can steal everything off of. ECM, BCM, Keyless, Alarm, Cruise... the whole smash. If I get lucky, I may even be able to swap in the ABS/TCS stuff as well, but I'll have to do more research on the front spindles for that.

It's going to be a slow process, but it should be interesting when it's done.
Steve

2008 2500HD Duramax CCSB
2002 Trans Am
1989 Formula Pontiac 400 T56 "Drag Week" car.
1980 Formula... something and parts

Offline TAKID455

  • Sr. Member
  • ***
  • Posts: 1179
  • Referrals: 0
Re: 1978 EFI W72
« Reply #8 on: January 06, 2011, 06:31:46 PM »
2nd Gen Engineering
Specializing in Suspension and Driveline Performance Engineering
Custom/ Racing/ Restorations