Thread: Top Swap Question

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  1. #1 Top Swap Question 
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    is this a good deal
    "top swap.. 70k on blower and lim 109K on rest. $300 +shipping
    (heads,fuel rails,injectors,lim, blower)"
    ???? and how much would gaskets run me?
    thanks guys
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  2. #2 Re: Top Swap Question 
    Donating Users Liquifire's Avatar
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    as long as shipping is like 50 dollars it is a good deal. It isnt from a 97 is it?
    98 GTP Coupe- 180* T-stat, GMPP Front Sway Bar, Dual Aeroforce Interceptor's, TDC FWI, TDC Taylor 10.4's, ZZP SS Plog, ZZP 3" SS catted DP, ZZP MPS W/3.4, AL104's gapped @.055, 3800Perf. PCM
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  3. #3 Re: Top Swap Question 
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    finding out both of those questions ... and what else would i need to complete the top swap or would that be it?
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  4. #4 Re: Top Swap Question 
    GT Level Member skidoojames151's Avatar
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    you need a tune...thats the most difficult part...getting her to run right
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  5. #5 Re: Top Swap Question 
    I AM PEWPIN! rynoman03's Avatar
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    Copy'd this from the Top Swap Thread.

    PARTS LIST

    Heads from SC motor (Either Series will do, all the blocks are the came so all the heads can be interchanged)
    Head Bolts, can be OEM replacements or Studs, up to you(Stock are Torque to Yield(one time use)
    Thread Sealer (the head bolts go into the coolant jacket, and if they aren't sealed, they will weap coolant out)
    Head Gaskets
    Rocker boltsSame reason as the head bolts
    Valve Cover Gaskets
    Harmonic Balancer From the SC motor
    Tensioner for SC belt
    Idlers for Sc beltThese require bolts that aren't on the L26/L36
    Coil Pack BracketThe tensioner and one of the idlers bolt to the SC Coil bracket (some 97 and 98 cars may not need a different bracket)
    Lower Intake Manifold from the SC motor(The bolts are the same, so you can use your old LIM bolts if needed)
    Lower intake Manifold Gaskets(the Aluminum ones are the Best)
    Fuel Rail(you need the one that matches your fuel system, 97-03 gets the standard rail, while 04+ needs the return-less)
    Fuel InjectorsAre not a requirement, but you should run the SC injectors or better flowing units
    **Injector connectors may be required on some years
    Supercharger
    Supercharger Gasket(If you use a Gen III M90 you need O-rings as well)
    Supercharger Belt
    Throttle Body from SC motor(This isn't required but recommended)
    Throttle Body Gasket
    Colder Thermostat I Recommend 180*, but that is all personal preference
    1 Step Cooler Spark PlugsUsually recommended for the Top Swap
    Fluids Oil(a change needs to be done after Swap and before engine is started) Coolant(you will loose a good amount doing the Swap
    Oil FilterFor above change
    Tunned PCM Stock Gt settings are way too aggressive for a SC application, I suggest a tuner, but if you don't have time, a Canned tune can work
    Exhaust Manifold Gaskets (optional)
    1999 GTPHP Tuned, Ported SC/TB, 42#'s, SSAC's, ZZP Modded 1.9's/LS6 Springs/Manley's, TransGo Shift Kit, Poly Uppers, KYB GR2's/Springtech's. - 231k and traded it in. - Gone
    2000 GTP: XP, P&P'd Heads, N*\Lq4 MAF, GenV, 42#'s, PRJ Rails\FPR, Racetronix, TEP w/ 3.29 Gears, 300m, 7/8" chain, SSAC's. - Collecting dust in my garage.
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  6. #6 Re: Top Swap Question 
    The Blue One blueguy's Avatar
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    If it IS from a '97 and you don't have a '97 then it is a no go. Vacuum lines are all sorts of messed up.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  7. #7 Re: Top Swap Question 
    club of used to own a gp 99prixgt's Avatar
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    One thing that not mentioned that you WILL need are coil pack bolts. The L36 coil pack bolts are slightly bigger than the L67 ones. Make sure it has all the vacuum tubing included, it will make things easier. You will also need a map sensor adapter, you can get it from zzp.

    You can't just slap on a top swap and call it a day.

    your supporting mods list should look like this...

    -headers (if u can't afford it, at least a plog)
    -3" downpipe (if u get headers this is not needed)
    -180* t-stat
    -some type of intake

    1 step cooler plugs are recommended but, a lot of guys i talked to run 2 step cooler, I went 2 steps cooler and a .54 gap.
    Last edited by 99prixgt; 09-02-2009 at 12:43 AM.
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  8. #8 Re: Top Swap Question 
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    Quote Originally Posted by bluegtp91 View Post
    If it IS from a '97 and you don't have a '97 then it is a no go. Vacuum lines are all sorts of messed up.
    How. If you see my thread here, you will notice that the blower was from a 97. It has been plugged off where that vacuum tree was. You can leave the tree and plug individual vacuum lines off or you can do like this:

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  9. #9 Re: Top Swap Question 
    The Blue One blueguy's Avatar
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    That's crap. Give the people the right case for their car, I'd be ticked if I got a '97 case instead of a correct '98+ one. Another reason why I wouldn't recommend people buying from you.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  10. #10 Re: Top Swap Question 
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    Quote Originally Posted by bluegtp91 View Post
    That's crap. Give the people the right case for their car, I'd be ticked if I got a '97 case instead of a correct '98+ one. Another reason why I wouldn't recommend people buying from you.
    Yea, your right, the guy specifically asked me to do his 97 case like this, but yea, your the expert here. Like i said before, you have no knowledge. Go home.

    I posted this picture to show there are no differences other than the vacuum tree, which can be plugged with a 3/8" NPT plug, but i bet you didnt know that. Im tired of people saying how 97's are so much different when in fact they are not. Im here to clear up those common misconceptions.
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  11. #11 Re: Top Swap Question 
    GTX Level Member 02BlueGT's Avatar
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    Quote Originally Posted by 99prixgt View Post
    One thing that not mentioned that you WILL need are coil pack bolts. The L36 coil pack bolts are slightly bigger than the L67 ones. Make sure it has all the vacuum tubing included, it will make things easier. You will also need a map sensor adapter, you can get it from zzp.

    You can't just slap on a top swap and call it a day.

    your supporting mods list should look like this...

    -headers (if u can't afford it, at least a plog)
    -3" downpipe (if u get headers this is not needed)
    -180* t-stat
    -some type of intake

    1 step cooler plugs are recommended but, a lot of guys i talked to run 2 step cooler, I went 2 steps cooler and a .54 gap.
    ^^ all very true,I found out about the coil pack bolts the hard way
    I'm still moving around plugs to find what works best with my set-up....8 different kinds of plugs so far... I'll find one i like eventually
    2002 GT...CAI, Headers, Special Eddition two-tone leather interior added, HUD added, 12" Brake Upgrade, ZZP strut tower bars, gmpp sway bars, poly motor mounts, -6an braided SS fuel hoses , Hptuned, Headers, Top Swaped, 50lb inj, E85, 3.4
    I've got Boost!! Top swap Quesions? Click Here
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  12. #12 Re: Top Swap Question 
    GrandPrix Junkie Sabrewings's Avatar
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    Quote Originally Posted by 02BlueGT View Post
    ^^ all very true,I found out about the coil pack bolts the hard way
    Me too. A quick trip to the junk yard fixed that for me.
    2004 Impala LS - got some mods sold!!!
    2009 Subaru Impreza WRX STI

    NAIOA moderator Still Imp'n, just in a different Imp.
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  13. #13 Re: Top Swap Question 
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    ok i already have all the supporting mods im just wondering if this would be a good deal for all these parts... 300 plus 75 shipping

    1 70k stock supercharger (all bolts for sc)
    1 70k stock lim (no bolts you can use the ones from you're NA motor
    2 109 k stock heads.
    1 stock fuel rail
    6 stock injectors

    all from a 1998 grand prix gtp.

    for an extra 50$ ill throw in the ported TB with sensors on it, and HAI with 4in cone filter. and hardware to put it all on.
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  14. #14 Re: Top Swap Question 
    Donating Users Liquifire's Avatar
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    sounds about right price wise.....
    98 GTP Coupe- 180* T-stat, GMPP Front Sway Bar, Dual Aeroforce Interceptor's, TDC FWI, TDC Taylor 10.4's, ZZP SS Plog, ZZP 3" SS catted DP, ZZP MPS W/3.4, AL104's gapped @.055, 3800Perf. PCM
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  15. #15 Re: Top Swap Question 
    GXP Level Member BwolfGT's Avatar
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    Good deal, don't waste the money on an HAI though, just get an FWI or go open cone.
    1998 GP GT - Topswap - Ported M90 - N* - 4" FWI - Poly Mounts - 3" DP - 180 Tstat - Alt. Rewire - 3.29 gearing - Full Exhaust - Custom Tune
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  16. #16 Re: Top Swap Question 
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    i already have a FWI do i need the TB tho?
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  17. #17 Re: Top Swap Question 
     

  18. #18 Re: Top Swap Question 
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    so do you guys think i could find a better deal or should i go for it?
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  19. #19 Re: Top Swap Question 
    GXP Level Member BwolfGT's Avatar
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    Go for it.
    1998 GP GT - Topswap - Ported M90 - N* - 4" FWI - Poly Mounts - 3" DP - 180 Tstat - Alt. Rewire - 3.29 gearing - Full Exhaust - Custom Tune
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  20. #20 Re: Top Swap Question 
    Donating Users Liquifire's Avatar
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    you probably wont find too much better of a deal.......I would go for it. If you do find a better deal, you arent going to get that stuff much cheaper than you have found it for.
    98 GTP Coupe- 180* T-stat, GMPP Front Sway Bar, Dual Aeroforce Interceptor's, TDC FWI, TDC Taylor 10.4's, ZZP SS Plog, ZZP 3" SS catted DP, ZZP MPS W/3.4, AL104's gapped @.055, 3800Perf. PCM
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