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305 2-pice to 350/330HO 1-piece

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Old 01-06-2006, 12:22 AM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
305 2-pice to 350/330HO 1-piece

Well my little 305 bit the dust I think something got clogged in the oil pump and it spun a bearing, so now’s the time for a new motor. I want something fun so I’m gonna go wit the 350/330ho now I have a 2-pice rear main car so this leads to my questions. I need to get a 1-pice flex plate so I think the 84's had 153 tooth flexplates right? And the balancer I have right now is brand new like 6months old can I reuse it? I'm trying to keep this as cheap and simple as possible I have a parts list here if anyone cares to take a look. Please mention if you know something better or if I can just reuse something from mine. Anything not listed is being used from my car. Also i need to now about that flexplate tooth number ASAP if anyone knows?? This is my daily driver so since its sitting all I can do is sit.

GMPP 350 C.I.D. 330 HP Engine_____NAL-12486041_____2548.95
GM Performance Parts Flexplate_____NAL-14088765_____87.95
Edelbrock Performer RPM Air-Gap Intake_____EDL-7516_____225.95
Fel-Pro Intake Manifold Gasket Set_____FPP-1255_____19.88
ARP Chromemoly Intake Manifold Bolt Kit_____ARP-134-2002_____21.69
Summit Pipe Plug Kit_____SUM-G1484B_____8.39
Summit Full Flow Fuel Filter_____SUM-230101_____28.95
2 - Earl's Performance Swivel-Seal Hose End_____EAR-800106ERL_____11.76
Taylor Spiro-Pro Spark Plug Wire Set_____TAY-73651_____56.39
Summit Chrome Water Neck_____SUM-G3801_____8.95
Be Cool High Performance Thermostat_____BCI-78001_____19.69
Fel-Pro Water Pump Gaskets_____FEL-5152_____1.99
Fel-Pro Fuel Pump Mounting Plate Gasket_____FEL-5182_____1.99
Fel-Pro Fuel Pump Gasket_____FEL-6579_____2.39
Fel-Pro Performance Carburetor Gasket_____FPP-1914_____4.95
Fel-Pro Performance Distributor Gasket_____FPP-P70165_____0.99
Moroso Low Profile Racing Air Cleaners_____MOR-65902_____43.88
Accel U-Groove Performance Spark Plug_____ACC-0516_____15.60
Percy's Seal-4-Good Header Gaskets_____PHP-66012_____34.95
Old 01-06-2006, 11:36 AM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
A Pioneer PIO-FRA160 flexplate (yes, 153-tooth) is $47.39.

I believe you can get the HO for less from other sources (Summit lists it at $2400 - where did you get that price?).

The CRT-M6626 Carter fuel pump is working fine for me. Includes the return port, nice thing to have.
Old 01-06-2006, 11:47 PM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
that was price wit shiping included.. K thats the other flexplate i was looking at.. and will a factory replacment LG4 fuel pump feed it? cause i replaced it about 4 years ago and been doin fine so far..
Old 01-07-2006, 05:45 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The pump may be fine, but for $18, you don't have to worry about it.
Old 01-07-2006, 06:26 PM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
yea i went a head and put it on my list i should be orderin everything tuesday or wednesday.. thanks for the help i hope to have my car back on the road in 2 weeks..
Old 01-14-2006, 06:05 PM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
Well I received the money later than anticipated so I just ordered the parts yesterday for a grand total of 3434.49 shipped. I ended getting the motor locally so if something happens within the warranty period I can just take it here locally. I hope to have everything in and running by Friday or the following Monday/Tuesday?? Wish me luck :-)
Old 01-14-2006, 07:25 PM
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Good luck man, i'm sure you'll like the extra power
Old 01-15-2006, 12:13 PM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
Also has anoyne heared one these motors run? I was woundering if the cam has any lope to it? cause the description says modled after the 327/350hp cam in the older vette's.
Old 01-15-2006, 03:46 PM
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Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Not really any obvious lope to my 350HO Deluxe.

JamesC
Old 01-15-2006, 04:22 PM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
darn was hopin for little sound to it o well... Guess ill do a cam swap later down the road...
Old 01-16-2006, 11:36 AM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Careful. Without modification, the heads can't take a whole lot of lift. Beehive springs tend to help, but don't address the press-in rocker stud pull-out vulnerability. Best approach is to remove the heads and have the studs pinned or replaced with screw-in, and cut the guides for positive seals and more "standard" performance springs.
Old 01-24-2006, 11:14 AM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
Well its in and running WOOT WOOT. It also moves under its own power but, there’s always a but. Well we decided to fix the leaking diff cover well we opened it and there were quiet a few teeth lying in the bottom . So now I am waiting on an overnight shipment from Jeg’s with a new auburn posi and a set of 3:73 gears. . Can’t wait to get my car back on the road its goanna be fun . And I can also confirm that a Vortec RPM Air-gap with Moroso air filter and poly motor mounts does fit under the stock hood of a Camaro. The cleaner lid pushes on the insulation a little but nothing serious. So if anyone was wondering about fitment it fits great!! I should get to drive it tomorrow .

Last edited by zNucleaRz; 01-24-2006 at 11:21 AM.
Old 01-24-2006, 11:20 AM
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Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Is the Moroso a 14x3 drop base? If so, which model number do you have?

JamesC
Old 01-24-2006, 11:24 AM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
Moroso Low Profile Racing Air Cleaner Part number MOR-65902 this is the part number for the blue(comes in like 5 colors) one witch I got. It is a 14x3 with a 1" drop base. It also fits fine over my Demon carburetor with no linkage interference.


Last edited by zNucleaRz; 01-24-2006 at 11:29 AM.
Old 01-24-2006, 11:34 AM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
Originally posted by JamesC
Not really any obvious lope to my 350HO Deluxe.

JamesC
You’re right about not really having much sound to the cam. But it does sound a lot different than my 305. You can tell it has some lope to it but I'm also running bullets so its like insanely loud compared to my 305 with the bullets.
Old 01-25-2006, 11:35 PM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
I got to drive it today!!!

Wow the car takes off like a rocket ship! compared to my 305.. And those 3:73 gears only increased my RPM by about 500 at 65 witch isnt bad.. Now if i can get through the breakin period without playing around ... Kinda nice to feel that kind of power lolzz ..
Old 01-27-2006, 05:26 AM
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Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
I tried the Moroso air cleaner on my car (ordered in from Jeg's). The hood wouldn't close, so I'm back to my 14x2/12.

JamesC
Old 01-27-2006, 08:08 AM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
i have no problem shutting my hood it does leave and impression in the insulation but oes not press on the hood at all.. is the GM intake taller than the RPM and RPM Air-gap?
Old 01-27-2006, 08:35 AM
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Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
I wouldn't have thought that my intake was taller, which is why I was excited about the Moroso. I measured the Moroso against the stock GM piece (which came with the engine) and it was the same, about 1 inch. Been considering the Holley Hi-Tek Twin Side Draft air cleaner, but the expense is considerable--pretty cool looking though. Can't find any flow numbers on it, and rumor is that it doesn't flow well. Perhaps 1 1/2 drop base would do the trick.

JamesC

Last edited by JamesC; 01-27-2006 at 08:59 AM.
Old 01-27-2006, 11:26 AM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
GMPP Highrise Vortec intake 12366573 is 5.375" @ tallest point
Edelbrock RPM and RPM Air-gap intake is 4.92" at tallest point

This is probably why it did not fit... A difference of .455 so you'll need about 1/2 more of a dropbase than you currently have I guess...
Old 01-27-2006, 11:44 AM
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Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
here is how mine sits

Old 01-27-2006, 12:39 PM
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Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Well, you're absolutely correct. The part number you provide is the intake I have. I wonder if a 2 1/2 inch element with a 1 inch drop would provide as much air as a 3 inch element with a 1 1/2 inch drop?

JamesC

Last edited by JamesC; 01-27-2006 at 12:42 PM.
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