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Re: 4+3 info |
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Jeffvette wrote: Trans itself is only common BW Super T10 ( w/unique case ) with short output shaft to mate to O/d unit http://www.tbtrans.com/t10_transmission.htm
Posted on: 2010/5/23 3:02
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Re: 700r4 removal questions |
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I disconnect the TV cable at the TB and remove with trans
Posted on: 2010/4/11 0:26
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Re: knock sensor / lower coolant hole. what thread size? |
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And that flare is only to fit the 3/4" nipple used on the water pump.If they had changed that fitting then everything would be 5/8" throughout
Posted on: 2010/4/1 7:04
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Re: c4 turbo |
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[IMG]http://i171.photobucket.com/albums/u309/vetteoz/turbo1.jpg[/IMG]
Posted on: 2010/3/17 22:54
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Re: What is this? |
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No vac leaks , just means your vent positions will change every time you accelerate as engine vac changes. Side port goes to a "T" where it splits to cruise and to hard line on inner wheel well to vac ball under drv side headlight [IMG]http://i171.photobucket.com/albums/u309/vetteoz/checkvalve.jpg[/IMG]
Posted on: 2010/3/15 1:52
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Re: 160 T Stat |
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O/d engagement on the DNE 4+3 is temp related Min O/d operating temp varies by year ; 176F on the early cars to 122F on the '87/'88 cars If temp drops below set point , O/d will kick out or if engine doesn't get hot enough, O/d will never engage.
Posted on: 2010/3/2 13:05
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Re: Rear brake lines ? |
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KEG64 wrote:But it does not show and I cant figure out is where the lines that go to the LR and RR on the ABS originate. If you have a early car ,there is only one rear brake line that services both sides through the block you mention At ABS you have 5 lines ; Fr/R in from M/c LF/ RF and rear out From the block the brake line follows the frame down and goes into the ABS box If the lines were numbered 1-5 L > R looking from the rear then rear line is # 5
Posted on: 2010/2/27 5:26
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Re: Is the GMPP 845 cam too much for a street driven corvette? |
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GMPP # 846 222/230 .509/.538 w/1.5's 112
Posted on: 2010/2/18 13:03
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Re: Is the GMPP 845 cam too much for a street driven corvette? |
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GMPP # 845 214/222 .520/.543 (w/1.6) 112
Pretty mild , not even as big as the popular Hot cam 218/228 .525 (w/1.6) 112 With 3.7's and 3K+ stall ( or manual ) the F-Body guys are running the GMPP # 847 in LT1's 234/242 .539/.558 (w/1.5 ) 112
Posted on: 2010/2/17 22:13
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Re: pcm upgrade? |
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383tpimachine wrote:SO what all would I need to run an 87+ ecm? The repining of the ECM connector and addition of the MAF burnoff relays More viable ( less painfull ) option these days may be to get the complete engine and ECM harness from a wrecked '86- '89 Vette. Alot more in wrecking yards than when Mike Davis did his conversion write up 10 years ago. The '165 ECM's go for $30+ on the Forums and you get to sell your rare discontinued '85 MAF unit for $$$
Posted on: 2010/2/14 21:39
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Re: Rear Wheel Bearing Replacement? |
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That is what I did on the 1st one but still needed the pipe ext as noted. Now I drive to a local garage and use a rattle gun to crack it loose
Posted on: 2010/1/17 4:56
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Re: Rear Wheel Bearing Replacement? |
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How do you hold while you crack that 160 ft/lb rusted on hub nut off ? Took 6ft of water pipe on a breaker bar with the car on ground to get mine loose
Posted on: 2010/1/16 22:05
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Re: wow |
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After doing it for 10 years it grows on you.
Posted on: 2010/1/3 11:56
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Re: Drag radials for a c4 |
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MT ET Streets work for me. Hook everytime with little if any warming.Usually only a little spin to dry the water off
Posted on: 2009/12/30 7:11
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Re: A quick quiestion for the techs |
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NC Kid wrote:Does my C4 spin both or just one? If the Posi is working correctly ,it should spin both. If only one wheel spins ,clutches in the Posi( LSD ) are shot
Posted on: 2009/12/26 0:08
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Re: 1985 Fuel Pump Test Terminal |
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Jeffvette wrote: I don't know the early cars have one. Never found one on my '87 but my '89 and '90 have them Quote: Jeffvette wrote: Put 12V to G on the ALDL [IMG]http://i171.photobucket.com/albums/u309/vetteoz/aldl.gif[/IMG]
Posted on: 2009/12/25 1:57
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Re: Educate me |
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Josh wrote:I don't have time to read that thread right now, but are you saying that a 36 to 44 swap is a waste of time/not worth it? jhammons01's rearend Master Tech "scoffed at how many subscribe to the "switch it out to a D44" advice. He pointed out that the D36 if properly maintained ,it will stand up just fine...even when much larger HP is added to the motor." Maybe you could enlighten the people how to blow up D44's Josh?
Posted on: 2009/12/17 6:50
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Re: Tachometer. 91 A4 w/performance rear gear |
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corvetteronw wrote: If that doesn't work http://forums.corvetteforum.com/c4-ge ... eplacement-1990-vert.html http://www.thirdgen.org/techboard/ele ... 90-92-tachometer-fix.html
Posted on: 2009/12/15 6:47
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Re: Are there any better locker units for the dana 44HD rearends? |
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Posted on: 2009/12/7 22:39
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Re: 1985 Drag rims recommendation |
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My 28" x 10" slicks on the same rims fit under with 1/4" to spare but obviously there is no clearance for susp movement as the tire is outside the body line.
If I get the chance I will fit a rim up and see if you could go to a bigger BS to move the wheel in. I used the 5.5" BS because I got a good deal and they fitted; I did not actually select that BS on purpose
Posted on: 2009/12/5 22:26
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Re: 1985 Drag rims recommendation |
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I have 15 x10 Welds for my '87 ( same as '85 )
With a 5.5' backspacing they clear everything inside( calipers ) fine BUT they hang out past the guards a little. No rubbing problems with a 26" tall tire .
Posted on: 2009/12/5 6:37
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Re: Removal of the emissions air tubes from the exhaust manifold |
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What year /engine ?
Posted on: 2009/11/29 13:00
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Re: 4L60e |
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Depends on when the housing on the truck trans changed; I believe the later "E's" (LS1's )have a 6 bolt housing ; not 4 bolt like 4L60.
Posted on: 2009/11/20 5:40
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Re: synchronizing my speedo w/ new rear |
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http://www.ecklers.com/product.asp?pf_id=46895&dept_id=1874 25007308 is the GM part # for the required VSS but I can not see it marked on the VSS itself.It is however marked 40 -45 ( the range of gears that fit ) above the wire plug so if you were junk yard shopping you could get one 3.07 rear requires red (17) drive gear and green (42) driven speedo gears .You should already have the red gear on the trans shaft and a white (36) driven gear( for 2.59 )
Posted on: 2009/11/18 3:36
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Re: LT1 vs L98 (gen1) block dimensions? |
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RedGut86 wrote: Clear as mud? No but LT1 is 6" ;china rail to top and TPI is about 9 1/2" to highest point so LT1 intake on ANY SBC in C4 would have 3 1/2" MORE clearance to hood than TPI HSR is only intake that has C4 clearance problems in unmoddified form
Posted on: 2009/11/14 1:03
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Re: 700r4 vs.4l60e |
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Can be done with a expensive GM or aftermarket contoller http://www.crateenginedepot.com/store ... ller-12497316-P722C0.aspx A quote "Because the transmission is electronically controlled by the PCM and its requisite wiring, it is usually simplest to join the 4L60-E to the engine it came with from the factory. Earlier engines can be joined to the 4L60-E by use of a GM Controller, #12497316. Individuals converting to earlier engines or engines not controlled by a GM PCM should consider the TH700R-4 as the simpler and cost-conscious alternative."
Posted on: 2009/11/12 22:18
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Re: Can anyone verify the bolt dimensions for the batwing -> differential case? |
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That is only the gasket holding the two parts togehter
Posted on: 2009/11/6 23:03
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Re: Can anyone verify the bolt dimensions for the batwing -> differential case? |
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While rebuilding my D44 with some loose but not flogged out threads I found there was 3/8" untapped in the hole so I bottom tapped them and loctited Grade 8 studs in.
Posted on: 2009/11/6 8:04
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Re: Can anyone verify the bolt dimensions for the batwing -> differential case? |
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10 x 1.5
Posted on: 2009/11/5 21:55
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Re: 113 heads valve lift question |
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Matatk wrote: LT4 / ZZ4 spring worked for me ; under $40 set http://paceperformance.com/index.asp? ... ion=VIEWPROD&ProdID=24732 $20 for the lightweight LT4 retainers http://paceperformance.com/index.asp? ... ion=VIEWPROD&ProdID=22758 Quote:
A little knowledge is a dangerous thing
Posted on: 2009/11/2 21:48
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Re: Any special driving technique for data logging? |
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You just drive normally and log.Datamaster will record all the sensor outputs
If say you have a problem when accelerating ,do some WOT passes and the review the logs You open Datamaster and select the log you made.In the bottom RH corner you can select any four parameters to graph against each other. http://www.powertuneplus.com/syclone/tunersguide_dm.shtm Say knock retard v revs v mph v spark advance. The graph will show those four and you can see where you are getting knock under what conditions.You can zoom in down to seconds from a hour long datalog. Easiler than scrolling through the numbers looking for a change
Posted on: 2009/10/13 21:15
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Re: Can I drive my car home without editing the tune? |
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But the actual lock up speed will be different because the speedo is off. I've driving mine without the speedo gear change with no problem; haven't had time to open the trans up and change gears
Posted on: 2009/10/9 0:00
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Re: Stock cast crank question |
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Some of the factory over the counter performance cranks are nitrited.I don't believe they are any "softer" underneath than a regular crank seeing as they are listed as same 1053 material. The grinding concerns comes from removing the hardened surface which puts you back to a regular crank surface unless you get the journals re-nitried after grinding.
Posted on: 2009/10/5 6:23
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Re: The "will these wheels fit" thread |
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84 -87 (base) front & rear 16"x8.5" 32mm (6.0" backspacing) (z51) front & rear 16"x9.5" 38mm (6.7" backspacing) To put late C4 wheels on early C4 you need 3/4" adapters So to run the above mentioned rims on a early rear you need 18 +23 mm ; 40mm = 1 5/8". The C6 Z06 19" rims are listed as having 56mm offset
Posted on: 2009/10/5 1:49
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Re: The "will these wheels fit" thread |
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The fronts have the same 56mm offset as the 88-96 cars
The rears are listed as 79mm v 56mm on 88 - 96 rear so that would be 23mm difference
Posted on: 2009/10/5 0:22
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Re: Extending Starter wires? |
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Same here; I have a '90 Vette Denso mini starter on my '87 with original wiring.
Posted on: 2009/10/4 0:03
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Re: Calling Matatk -- Mathew question about your U-Joints |
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I wouldn't be going too far on that convertor without a cooler; too much heat
Posted on: 2009/10/4 0:01
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Re: Calling Matatk -- Mathew question about your U-Joints |
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yes 1350 series on the halfshafts and 1310 series on the DS http://forums.corvetteforum.com/c4-te ... u-joints-part-number.html
Posted on: 2009/10/3 4:33
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Re: C4 and roller rockers/need help |
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Need to remove the stock drippers from the underside of valve covers and maybe thin the hold down posts dependent apon how wide new rockers are
Posted on: 2009/10/3 2:57
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Re: Questions, always more questions... |
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Contact Jeffvette on this Forum for adapter brackets https://www.superchevyperformance.com/Articles.asp?ID=124 http://forums.corvetteforum.com/c4-te ... ke-upgrade-done-pics.html
Posted on: 2009/10/1 7:23
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As I noted in post # 3
Posted on: 2009/9/30 2:12
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As I noted in my first post above; all the power feeds are off the starter terminal in the older cars. Is there any chance you have lost a terminal off the "spare" red wire. Reds are nearly always power supply wires [IMG]http://i171.photobucket.com/albums/u309/vetteoz/Starter.jpg[/IMG]
Posted on: 2009/9/29 0:07
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Re: Wheel bearings, why cant C4's get the good stuff too? |
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Posted on: 2009/9/28 6:12
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Re: rearend problem |
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So you are saying the strap that holds the uni cap in is not hard up against the yoke? If you have the correct uni's and they are seated correctly the strap should be hard up on the yoke with no gap where the bolt goes through
Posted on: 2009/9/27 23:37
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This however is a chance for you to tidy up the wiring. In the early cars all the power feeds (reds with fusible links) come off the terminal on the starter; in later cars from a terminal block on the firewall behind batt. Lot easier for fault finding if the feeds are upstairs on a block or direct to the Batt+ instead of having to crawl under car. You end up with only the heavy main starter feed and purple solenoid wire at starter(goes on small terminal on solenoid) Also in the starter loom you should have the old knock sensor wire (blue ? ) and a green wire going to the old temp switch in head between #6+8
Posted on: 2009/9/27 23:19
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Re: Softer spring rates |
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I disconnect my front bar at the strip ('87 Z51),one night I forgot to hook it back up and it was a completely different car as far as ride went.The QA1's keep the bounce in control and the ride was almost limo like compared to normal
Posted on: 2009/9/27 8:12
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Re: 383/DMF considerations |
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Beaware; the external balance on a 1 pce seal crank is different to the external balance as used on the 400's which requires a weighted balancer and weighted flywheel. Some of the stroker kits notably the cheaper ones use this configuration ;essentially a 400 crank with 350 journals The 1 pce seal crank is ext balance AT rear only ; the front is neutral using any regular ( non 400ci ) balancer
Posted on: 2009/9/27 3:53
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Re: are all base plates the same? |
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Depends what your end use is. Check it out; comparision done on a 383 but Hp / torque curves still relevent to each other. http://www.compcams.com/Community/Art ... Details.asp?ID=1737510521 Their base engine made 400Hp v 250Hp for stock so if you knock 150Hp off all the results would give a ballpark comparision on a 350.
Posted on: 2009/9/25 23:22
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Re: fuel rail connections |
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But you made new lines back to the filter ; my personal preference because you can run them across the bellhousing away from heat . He is extending the stock rubber lines that connect at the front of the TPI so he needs the female metric fittings instead of the male ones you used.
Posted on: 2009/9/22 14:04
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Re: C3 diff in a C4? |
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I don't see why not; but would you not use only the modified 12 bolt C3 center with the C4 spindles and dogbones?
Posted on: 2009/9/22 13:58
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