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Old 10-14-2006, 04:04 PM   #1
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Default 3.5 liter engine in my '05 SV6

is this a shortstar 3.5 or is it just a bored out 3.4 (like in my wife'* 02 venture or my 95 firebird)?
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Old 10-14-2006, 04:04 PM   #2
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Default Re: 3.5 liter engine in my '05 SV6

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Originally Posted by 2000SSEiPA
is this a shortstar 3.5 or is it just a bored out 3.4 (like in my wife'* 02 venture or my 95 firebird)?

Not a shortstar.
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Old 10-14-2006, 04:20 PM   #3
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The 3500 should be a reworked 3100-3400...

I believe that the 3500 and 3900 should be in the same ship...

The 3100-3400 had some issues that could be lived with, Piston slap and lifters that had some chatter... Intake gaskets on these motors are junk tho... And when you replace those gaskets you may want to flush the system and use a coolant other than Dex such as Prestone Longlife... I'm assuming I see chevy or olds Minivan on the other side with a 3400

Your Montanna SV6 with the 3500 is a 60* Chevrolet Engine( Same as the 3400 in the other van, and the firebird( old 3.4 pushrod non 3400 ), cast iron block with alluminum heads, with SFI, All of these engine have the 60* cylinder bank seperation

Roughly 200 Hp and 220 ft lbs is not bad for a 3.5 V6 when comparing to a 3800 Series II L36 making 205 Hp and 230 ft lbs, the other van with the 3400 is also SFI and produces 180 hp and 210 ft lbs

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Old 10-14-2006, 04:34 PM   #4
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Maybe that is why sometimes, I close my eyes, rev the engine in my SV6 (and hear some of that good old GM piston slap lol) and hear the exhaust and get taken back to a place in time where I was rolling in my 95 firebird with a cute chick with all of my life in front of me. But, one of my kids screamed to change the DVD and I was whip sawed back into reality. The 3500 in my van is nice for a van but I would still prefer a 3800.
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Old 10-14-2006, 08:59 PM   #5
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I was just on the pontiac site last night it looks like for 2007 the 3500 V6 in the cars like G6 now makes 224hp, its also the same for malibu for 2007 and at least for G6 the 3500 is now the base engine; no more 4 cylinder which is pretty cool.
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Old 10-14-2006, 10:47 PM   #6
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Quote:
Originally Posted by asonofabeach69
I was just on the pontiac site last night it looks like for 2007 the 3500 V6 in the cars like G6 now makes 224hp, its also the same for malibu for 2007 and at least for G6 the 3500 is now the base engine; no more 4 cylinder which is pretty cool.
Probably because GM wants to use up all the Malibu parts since this is the last model year for it...more so the Maxx models
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Old 10-15-2006, 01:22 AM   #7
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The 3.5 is now the "affordable" V6 option, or a base V6 in your case. Just the regular 60 degree family, not a shortstar.
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Old 10-15-2006, 01:46 PM   #8
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Quote:
Originally Posted by 2000SSEiPA
Maybe that is why sometimes, I close my eyes, rev the engine in my SV6 (and hear some of that good old GM piston slap lol) and hear the exhaust and get taken back to a place in time where I was rolling in my 95 firebird with a cute chick with all of my life in front of me. But, one of my kids screamed to change the DVD and I was whip sawed back into reality. The 3500 in my van is nice for a van but I would still prefer a 3800.
Thats possible... GM really hasn't changed the design too much with the beginings of the 3100 Vin M in 1994 In various N and W bodies as well as a few of the L bodies... Then in 96 Came the 3400 V6, a larger 3100.... In 99 an updated 3100 Vin J<--- More ponies ...

The 3100 M, 3100 J, 3400 E... 3500 and the 3900 are all of the same basic design... The 3900 was supposedly a complete redesign.... But I think they all of these engines will have these issues.. Piston slapp is a common problem with these engines, But I have yet to see one that failed due to the slap... I have seen too many go past 200k even with the piston slap.. The one thing I have seen that has destroyed the 3100'* and 3400'* are the intake gaskets... Nothing but trouble... I haven't seen a redesigned gasket for the 60* engines yet... The 3800 Series II'* now have the Alluminum frame gaskets as opposed to the plastic.... I'd like to see this happen for the 60* engines as well..

As for the Comment about you wishing for a 3800 in the van... My Cousins husband said the exact same thing about His 02 Montanna.... Felt it was a little underpowerd, wish it has the 3800 II Like his Bonneville has...LOL

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Old 10-15-2006, 02:07 PM   #9
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Quote:
Originally Posted by jr's3800
Quote:
Originally Posted by 2000SSEiPA
Maybe that is why sometimes, I close my eyes, rev the engine in my SV6 (and hear some of that good old GM piston slap lol) and hear the exhaust and get taken back to a place in time where I was rolling in my 95 firebird with a cute chick with all of my life in front of me. But, one of my kids screamed to change the DVD and I was whip sawed back into reality. The 3500 in my van is nice for a van but I would still prefer a 3800.
Thats possible... GM really hasn't changed the design too much with the beginings of the 3100 Vin M in 1994 In various N and W bodies as well as a few of the L bodies... Then in 96 Came the 3400 V6, a larger 3100.... In 99 an updated 3100 Vin J<--- More ponies ...

The 3100 M, 3100 J, 3400 E... 3500 and the 3900 are all of the same basic design... The 3900 was supposedly a complete redesign.... But I think they all of these engines will have these issues.. Piston slapp is a common problem with these engines, But I have yet to see one that failed due to the slap... I have seen too many go past 200k even with the piston slap.. The one thing I have seen that has destroyed the 3100'* and 3400'* are the intake gaskets... Nothing but trouble... I haven't seen a redesigned gasket for the 60* engines yet... The 3800 Series II'* now have the Alluminum frame gaskets as opposed to the plastic.... I'd like to see this happen for the 60* engines as well..

As for the Comment about you wishing for a 3800 in the van... My Cousins husband said the exact same thing about His 02 Montanna.... Felt it was a little underpowerd, wish it has the 3800 II Like his Bonneville has...LOL
I used to work for GMAC (got laid off in 2001, best thing that ever happened lol) and the GM people said they could not put a 3800 in the vans as it would not fit (something to do with angles) my wife has a 2002 Venture (paid off and will be run into the ground) and it is definitely under powered.
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Old 10-15-2006, 02:12 PM   #10
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Its funny you say that... If we look at the Old U bodies say 92-95... These could be had with the Tuned Port Injection 3800... There are still a lot of these on the road...

In 96 GM tossed the 3800 for the U body off a cliff and installed the 3400... I wish I had a service manual for the U bodies 97+ to get a look at the subframe dimensions

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