90-96 gp 3.4 engine swap - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 07-01-2005, 07:52 PM   #1
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Default 90-96 gp 3.4 engine swap

i was messing around and i had a thought. can the 3.4 dohc engine from the 90-96 grand prix be swapped in to a bonneville? i saw that it makes a bit more power than an l36 but less torque BUT..... it comes with a 5spd. is this doable? has it been done already?
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Old 07-01-2005, 08:04 PM   #2
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It'* the torque that moves the heavy cars, and that'* a crappy motor in comparison.

The custom fabbing for the clutch pedal would be a bitch. It'* really not worth it, and the clutch is going to have a short life with your big car behind it.
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Old 07-01-2005, 08:28 PM   #3
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3.4s suck.
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Old 07-02-2005, 01:56 AM   #4
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The little bit more HP isnt worth the aggravation that motor can cause.
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Old 07-02-2005, 02:31 AM   #5
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What is so bad about the 3.4s?
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Old 07-02-2005, 02:41 AM   #6
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If what you want is the 5 speed and not the engine (which is what it sounds like) you don't need to use the 3.4. However, a 5 speed on an h body hasn't been done yet so you won't know what all you need to change until you try it, but I'm sure it will fit with some work. Any GM V6 should bolt up to it though so you don't have to swap in a junk (IMO) 3.4.

Be prepared to do a lot of fabbing though.

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What is so bad about the 3.4s?
I'll make this as short and simple as I can. It has 4 cams and a timing BELT.

Shawn
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Old 07-02-2005, 02:50 AM   #7
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Quote:
Originally Posted by dbtk2

Quote:
What is so bad about the 3.4s?
I'll make this as short and simple as I can. It has 4 cams and a timing BELT.

Shawn
And has a reputation of doing odd things with those items mentioned. Very bad odd things.
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Old 07-02-2005, 02:57 AM   #8
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3.4s are Garbage ask any of your local mechanics even the dealer
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Old 07-02-2005, 03:10 AM   #9
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Lets not forget not much of an aftermarket at all, pretty much everything would have to be custom.
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Old 07-02-2005, 10:59 AM   #10
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It'* tough to believe any other smaller motors had the punch factor (torque) that the 3.8 built for our cars does.
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