3400 for lq1 swap - GM Performance Tuning

awfulwaffle · #1 (**permalink**) 08-10-2007, 03:10 AM

Would it be possible to swap the 3400 thats in my car right now for a 3.1 liter lq1 motor? What i'm looking for is the highest amount of stock horsepower i can get in my car before i start any heavy modification, and my local junkyard happens to have 4 or 5 lq1's available.

91parkave · #2 (**permalink**) 08-10-2007, 06:22 AM

why on earth wouldnt you gor a 3.8 or the 3.5?

grandravermc · #3 (**permalink**) 08-14-2007, 04:46 PM

I'm really not sure. All I know is that the LQ1 is a 3.4 liter DOHC engine that came in the older W-Bodies. If you have a NEWER W-Body- MAYBE- but in that case. I DEF don't think that swap would be even CLOSE to worth it for 35 horsepower. If you have a GA, or an Alero w/ 3400 now- you MAY have a hard time getting that work out OKAY, as the engines are mounted totally different. I say, SELL the car if you'd like it to be faster and start over with a engine that's greater than (or 'CAN BE' greater than, for a reasonable price) an L67 or HIGHER HP engine. You know?

GOOD LUCK to you!

PS - I personally don't like how difficult it is to MAINTENENCE the LQ1. They ain't easy. RUN GREAT on the top end, but are JAM PACKED in there and can be a MAJOR pain in the A$$. (although, IF maintained properly and cared for they ARE pretty reliable.)

jeremy96gase · #4 (**permalink**) 08-14-2007, 04:59 PM

awfulwaffle, what is your goal for this car?
Show car? Impress your friends with extravagant engine swaps? Speed? So you can say "I have more than 200hp" (in a car that already has 170)?

Do you want to race the car? or have it as a daily driver with more HP than stock?

Please give us more information, Thanks!
-Jeremy

awfulwaffle · #5 (**permalink**) 08-15-2007, 12:49 AM

Honestly, I just love screwing around with cars and engines. I'm trying to get as much as i can out of it n/a, and then i'm going for a vortech sc kit unless i can find something better. Eventually, racing seems like a good goal to aim for, but as of right now i'm just trying to get a higher-than-stock HP.

grandam01 · #6 (**permalink**) 10-23-2007, 12:13 AM

Well from what I know on the 3.4L DOHC, there is not much aftermarket and what there is is expensive, Mike Miller at Milzy motorsports does a bit with the engines pretty much any 3x00, when i asked about it, he suggested against it due tot he price, heads alone are about 15-1700 bucks for the fact that it is DOHC and you have to have custom parts made.

Would be a cool idea as a DOHC V6 would do well for racing, good low end and high end, just a lot of work and expensive.

Do able yes, it is a 60 degree v6 as is your 3400, but like I said it is just a matter of price and money.

awfulwaffle · #7 (**permalink**) 03-06-2008, 12:54 AM

mods, please delete these asinine engine swap threads. :D makes me ashamed of myself every time i see one.

19Cutlass94 · #8 (**permalink**) 03-08-2008, 01:50 AM

The 3400 has much more potiential/aftermarket than the 3.4 DOHC.

923.4v6 · #9 (**permalink**) 03-13-2008, 04:04 PM

Try Pushrod Performance - 60DegreeV6.com they been using RWD pistons and a 3400 will have 3.4 RWD pistons in a 3400 and the .040 gaskets it's 13.9:1
3.4 RWD pistons in a 3400 and the .060 gaskets it's 12.9:1
3.4 RWD pistons in a 3400 and the .045 ROL gaskets: 13.64:1
3500 top end has around 11.5 w/ 3.4 RWD pistons. I'm currently building a 3500 top end motor.I would go with the 3400 headgaskets that are .060 thick to keep more piston clearance.