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Search: Posts Made By: 91RockS
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Forum: Engine/Drivetrain/Suspension Parts for Sale
01-04-2019, 07:10 PM
Replies: 1
Views: 362
Posted By 91RockS

081 heads for sale

Selling a pair of 081 cylinder heads (GM p/n 14101081). Heads were professionally machined with 3 angle valve job, 1.94/1.5" valves, screw in 3/8 studs, and cut for guideplates (if you want to run...
Forum: TBI
12-01-2010, 10:29 PM
Replies: 167
Views: 27,791
Posted By 91RockS

Re: 1/4 mile quick TBI

My best is a 14.02 Bottem end completely stock, mods in sig. Running T5 manual trans. Extensive tuning with EBL and wide band O2 to dial in WOT. My goal was to get into the high 13's with the...
Forum: Engine/Drivetrain/Suspension Parts for Sale
09-09-2009, 05:31 AM
Replies: 15
Views: 3,569
Posted By 91RockS

Re: LT1 Cam for Sale

Sold
Forum: Engine/Drivetrain/Suspension Parts for Sale
09-01-2009, 09:05 PM
Replies: 15
Views: 3,569
Posted By 91RockS

Re: LT1 Cam for Sale

Cam is still for sale.
Forum: Engine/Drivetrain/Suspension Parts for Sale
07-27-2009, 06:21 PM
Replies: 15
Views: 3,569
Posted By 91RockS

Re: LT1 Cam for Sale

IMO, the LT1 cam is a great upgrade for a L03 motor. The L03 has a wimpy peanut cam, so the LT1 cam will provde a big performance boost. I would recommend changing valve springs with this cam if...
Forum: Engine/Drivetrain/Suspension Parts for Sale
07-26-2009, 06:46 AM
Replies: 15
Views: 3,569
Posted By 91RockS

Re: LT1 Cam for Sale

The LT1 wil have more lift than your stock cam, so you may need new valve springs. Do some searches on you stock valve springs to find out max lift they can handle before coil bind. Other that...
Forum: Engine/Drivetrain/Suspension Parts for Sale
07-24-2009, 06:25 PM
Replies: 15
Views: 3,569
Posted By 91RockS

LT1 Cam for Sale

FOR SALE:

LT1 Cam from a 1995 Z28 85,000 miles. This is a great performance boost for a TBI L03/L05 at a very low cost. I can cut the dowel pin down for buyer upon request (LT1 cams had longer...
Forum: TBI
07-24-2009, 04:42 PM
Replies: 9
Views: 1,457
Posted By 91RockS

Re: LT1 cam swap question

I've not tired it, but I think with the lifters in place, it would be difficult or impossible to install the cam. My advise would be to remove the lifters, mark them, and put them back into the same...
Forum: TBI
07-24-2009, 04:27 PM
Replies: 21
Views: 2,018
Posted By 91RockS

Re: 13 sec camaro ?

Depends what your definition of bolt-on is. 13's are possible with heads, cam, intake, exhaust and tuning (most consider these bolt-on). I recently ran a 14.039 with these mods and a stock bottom...
Forum: TBI
07-18-2009, 05:52 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

The carb hat was $75, plus two aluminum elbows and three rubber complers, about another $75 (all Spectre parts thru summit). $45 for K&N filter. I bought the strait piece of 4" pipe from a local...
Forum: TBI
07-17-2009, 05:21 PM
Replies: 18
Views: 2,124
Posted By 91RockS

Re: Are 1.6 rockers worth it?

90Formula305 - Going to 1.6 rockers is about 6% more lift. IMO the biggest hp gain with stock heads and cam comes from the reduced friction vs factory rockers (assuming full rollers are used). You...
Forum: TBI
07-17-2009, 05:03 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

I definitely felt a SOP improvement with the CAI. Global warming isn't happening in this part of the country, temps have been unseasonably warm, so have not tried it yet in hot weather city traffic....
Forum: TBI
07-16-2009, 10:05 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

For the cold air inlet, I used a Spectre plenum carb hat w/ 4" piping over to a K&N cone filter positioned in the left front corner of the engine bay. This is where the evap canister used to...
Forum: TBI
07-16-2009, 09:07 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

When I was putting the top end together, I originally had 1.6 rollers to install, but I found there was not enough clearance between the push rods and the pushrod holes in the heads. The holes had...
Forum: TBI
07-15-2009, 10:58 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Bumped the timing up 3° to 33° at WOT and datalogged. Measured about a3-5% improvement in acceleration with no knock counts, so I'll bump it up a few more degrees and try again. On the way home I...
Forum: TBI
07-13-2009, 06:52 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Fast, you might be right. With the stock swirl ports, I could only run 27-28° and was on the ragged edge of knock. With my ported 081, I'm not getting the slightest hint of knock at 30° with CR at...
Forum: TBI
07-13-2009, 06:46 PM
Replies: 8
Views: 1,372
Posted By 91RockS

Re: heated o2?

I switched to 3 wire heated since 2 wire stock would not stay hot enough to run closed loop at idle. This is common with modded motors with headers. Used a Delco AFS-74 with plug and play harness...
Forum: TBI
07-13-2009, 06:37 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Well I removed the 1/4" pod spacer and did a back to back datalog comparison. 2nd and 3rd gear acceleration were slightly quicker, 1st and 4th no measureable difference. After getting my WOT AFR...
Forum: TBI
07-01-2009, 08:15 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Did more datalogging with 46mm tbi. Performance at WOT actually seems to be down. Motor is not pulling as hard. When I swapped out the TBI, I changed four things (always a bad idea): TBI,...
Forum: TBI
06-26-2009, 10:52 PM
Replies: 7
Views: 1,288
Posted By 91RockS

Re: just did a 350 swap

What heads are you running? I'm pretty sure Edelbrock advertises that cam, along with their RPM heads and intake, to make over 400 hp. I doubt that Jasper rebuild came with very good heads (unless...
Forum: TBI
06-26-2009, 10:42 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Thanks for the props Shifty,

To answer your tuning tools question, I'm using the same as most other guys, nothing special, but I'll give you the run down.

To start with I have an EBL classic,...
Forum: TBI
06-25-2009, 07:34 AM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Swapped out TBI with ultimate mod 46mm TBI last night and also installed injector pod spacer. The spacer of course raised the rear fuel line fittings ports at the back of the pod, so additional...
Forum: TBI
06-23-2009, 10:43 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Get those 2055's installed. You'll be really happy with how the car runs with the 3" aerochamber already installed. You'll really free up the exhaust restrictions and the sound will turn heads. ...
Forum: TBI
06-22-2009, 08:57 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Picking a cam that matches the rest of you combo (compression ratio, heads, intake, etc) is probably the most imortant decision of a good build. It depends on your horsepower and torque goals, which...
Forum: TBI
06-21-2009, 08:20 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

I'm running a bone stock TBI with the spacer ring removed and a 14X3 drop base open element. The lid on the air cleaner is rubbing on the underhood insulation, so I don't have any room for a TBI...
Forum: TBI
06-21-2009, 03:29 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

I have a ZT-2 as well. Data resolution is great at ~57 hz. I tapped into my ESC knock signal and have that wired to the user defined channel, so I can see in the datalogs when the knock sensor is...
Forum: TBI
06-20-2009, 09:37 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

Carving out 70 lbs is good for about a .1 sec in the 1/4 on a 3400 lb vehicle. So 35 lb for .05 sec. I usually go to the track with the fuel tank close to empty to minimize fuel weight. I'm not...
Forum: TBI
06-20-2009, 09:24 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

At WOT, the throttle plates are completely open and MAP generally goes up very close to atmospheric pressure, which is about 100 kPa. If the TBI is sized correctly, the MAP at WOT should stay close...
Forum: TBI
06-20-2009, 12:17 PM
Replies: 47
Views: 9,176
Posted By 91RockS

Re: L03 buildup complete + results so far

I agree, the cam is relatively mild. At the time I bought it I thought I was pushing the envelope for a 305 TBI, but now I'm confident enough with EBL that I could tuned a cam with another 10 deg...
Forum: TBI
06-20-2009, 09:16 AM
Replies: 47
Views: 9,176
Posted By 91RockS

L03 buildup complete + results so far

I’ve been away from the TGO boards for a while (work, kids, . . ). It’s been a long time coming, but finally had time to complete the engine mods I started last fall. Thought I’d share with the...
Forum: TBI
06-26-2007, 09:11 PM
Replies: 7
Views: 506
Posted By 91RockS

Re: Good for high 14's

I second what vjo90RS8 said about expecting low 14's or high 13's with that setup, of course with a good tune. I'll be installing my ported 081 heads with a more agressive cam than LT1 soon. I've...
Forum: TBI
01-02-2007, 09:23 PM
Replies: 5
Views: 819
Posted By 91RockS

I'm very happy with my Zeitronix ZT-2. It...

I'm very happy with my Zeitronix ZT-2. It samples at about 56Hz, so you get great data resolution. I've used the 0-5 v analog input to bring in the ESC signal, so I can see knock on the same graph...
Forum: TBI
10-09-2006, 09:24 PM
Replies: 6
Views: 743
Posted By 91RockS

IMO, unless you are DIY tuning, you will probably...

IMO, unless you are DIY tuning, you will probably do more harm than good because the ECM won't know you've increased the size of the injectors. The injector constant needs to be changed if you go...
Forum: TBI
10-09-2006, 09:10 PM
Replies: 39
Views: 1,674
Posted By 91RockS

Freeloader - sorry my post did not meet your...

Freeloader - sorry my post did not meet your expectations. It was only inteded to be an update to my earlier post. I'm not into auto x right now, so straight line data is all I have.

Regarding...
Forum: TBI
10-07-2006, 08:35 AM
Replies: 39
Views: 1,674
Posted By 91RockS

Yea, I kinda disappeared from the boards this...

Yea, I kinda disappeared from the boards this summer. Got real busy, so cruising the TGO boards lost out to my job and other projects. Actually I'm lucky to be alive after my wife saw the credit...
Forum: TBI
10-05-2006, 10:38 PM
Replies: 39
Views: 1,674
Posted By 91RockS

Update to the times I posted this spring at top...

Update to the times I posted this spring at top of thread . . . I got a little sidetracked this summer and decided to upgrade the chassis & suspension instead of doing the heads and cam like I had...
Forum: Suspension and Chassis
07-07-2006, 12:33 PM
Replies: 1
Views: 1,165
Posted By 91RockS

Wonderbar vs Strut tower base

I'm in the process of upgrading my front suspension. I have a Spohn steering brace (wonderbar) ready to go in. Is there any benefit to adding a strut tower brace in addition to the wonderbar?
Forum: TBI
07-05-2006, 12:12 PM
Replies: 30
Views: 1,193
Posted By 91RockS

IMO that cam is enough to get you to your quarter...

IMO that cam is enough to get you to your quarter mile time goal. It's fairly close to a LT4 hot cam grind, but with a little less lift and LSA. As others have already said, tuning will be the key....
Forum: TBI
07-04-2006, 08:21 PM
Replies: 2
Views: 544
Posted By 91RockS

:iagree: DM91RS is right on. You really need...

:iagree: DM91RS is right on. You really need to know if you're running rich, lean, or right on. The factory tuned these motors slightly on the rich side to be safe, so you can get away with some...
Forum: TBI
07-04-2006, 08:10 PM
Replies: 30
Views: 1,193
Posted By 91RockS

What are the specs on the Comp Cam? Your sig...

What are the specs on the Comp Cam? Your sig says you're running an L03 305, which is a hydraulic roller cam motor. Make sure you're looking at hydraulic roller cams, in which case you should not...
Forum: TBI
06-29-2006, 06:02 AM
Replies: 30
Views: 1,193
Posted By 91RockS

Just those bolt-ons won't get you into the low...

Just those bolt-ons won't get you into the low 14's with a L03. Maybe low 15's at best, especially if running a factory rear end.
Forum: TBI
06-29-2006, 05:52 AM
Replies: 35
Views: 7,389
Posted By 91RockS

Is it groundhog day?:doh:

Is it groundhog day?:doh:
Forum: TBI
06-27-2006, 12:32 PM
Replies: 12
Views: 755
Posted By 91RockS

I think seanof3036 is right on with his advice on...

I think seanof3036 is right on with his advice on better launches. If you can get your 60' times down I think your ET's will dip into the high 14's. I have a setup very similary to yours, only with...
Forum: Fabrication
06-27-2006, 12:19 PM
Replies: 10
Views: 2,710
Posted By 91RockS

Sponh's website has installation pics of their...

Sponh's website has installation pics of their SFC's, they may give you some ideas. The best designs usually have "Y" members that tie the transmission crossbrace mounts to the main SFC structure.
Forum: TBI
06-22-2006, 12:47 PM
Replies: 14
Views: 1,910
Posted By 91RockS

Dominic, Did you by chance read the recent...

Dominic,

Did you by chance read the recent CHP 383 cam article. I don't have the issue with me, but I think it was the June or July issue. Anyway, they tested 6 cams on a 383. Three were single...
Forum: TBI
06-22-2006, 12:31 PM
Replies: 35
Views: 7,389
Posted By 91RockS

Your're exactly right DM. Fast355's heads were...

Your're exactly right DM. Fast355's heads were stock 081's. Mine are ported.
Forum: TBI
06-19-2006, 10:21 PM
Replies: 35
Views: 7,389
Posted By 91RockS

Thanks for the advice. I agree that #4 is...

Thanks for the advice. I agree that #4 is looking like a good choice. Fast355 recently posted 305 dyno results using a LT1 cam with 1.6 rockers. Something like 258 rwhp. With 1.6 rockers, the LT1...
Forum: TBI
06-19-2006, 09:47 PM
Replies: 35
Views: 7,389
Posted By 91RockS

Good catch. The valves are 1.94/1.5. Original...

Good catch. The valves are 1.94/1.5. Original post edited to correct.
Forum: TBI
06-12-2006, 10:34 PM
Replies: 33
Views: 4,492
Posted By 91RockS

Fast, those are some really good numbers with an...

Fast, those are some really good numbers with an LT1 cam and 1.6 rockers. That's what I was originally planning to use with my ported 081 heads, but as you know I'm planning on a bigger cam than the...
Forum: Suspension and Chassis
06-10-2006, 09:37 AM
Replies: 7
Views: 3,250
Posted By 91RockS

Thanks DM. When I get done, sounds like my ride...

Thanks DM. When I get done, sounds like my ride will be nearly a twin of yours.
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