Crossbreading acceptable??

[VF101_jay]

Just my opinion, but unless you are trying to save an historically significant numbers matching collectible car, why get too worried about brand loyalty...the manifacturers didn't, how many Trans-Ams are out there with factory Olds and Chevy blocks!

[BADVELLE]

Besides being a very nice car, ask Derrick M what the #1 comment is with his Firebird, I bet he says b/c it has a Poncho powerplant. I like to tow the line and keep Chevy in Chevy and Ford in Ford, etc, however, it is ultimately up to you. This is what makes your project, your project, if you like it, what else matters.

[6'9"Witha69]

Not this again

[Damn True]

I want a pontiac with a skyline engine in it.

[muthstryker]

i picked up a honda vtech for my gto last week ..............................

[LateNight72]

Just pull a LS1 out of a '04 GTO, you'll feel much better, or any IV Gen T/A..

-Todd

[Damn True]

i picked up a honda vtech for my gto last week ..............................

Sweet dude!

[[email protected]]

I've always thought it was ok as long as it was under the same roof. I thought the aston martin motored mustang was cool. Once you start putting a SBC in a ford or a Hemi into a Camaro, now it's not cool anymore.

[Bandit]

B@stard cars are cool!

[Goatman]

The LS-x family is more Pontiac than Chevy and if it came in a Pontiac, and has a Pontiac VIN, its a Pontiac motor. GM says it is, and no one here is more qualified than GM...........

[6'9"Witha69]

Put what you want in it. That is what Hot rodding is all about. Think about the original hot rodders. They always wanted to stand out. Swap a flathead for a nailhead. Then someone uses a 409. Then an SBC or BBC. How about a HEMI? Now it seems that original flatheads are a way to be different. Even the most Die hard FORD guys run what they think is best, coolest, or just plain fits.

I hate these debates.

[Steve1968LS2]

An LS1 IS a Pontiac engine, as is a LS2.. so there's your answer

[muthstryker]

An LS1 IS a Pontiac engine, as is a LS2.. so there's your answer

woah.... never new...

[trapin]

The LS1, LS2, LS6 and LS7 were designed, engineered and produced by GM Powertrain.

They hold no affiliation with Chevrolet, Pontiac or any of our other brand names.

[BRIAN]

Wow, old thread!! Well to make all happy that was about 3 cars ago and the 383 Chevy is in another members Camaro so no ******* was created.


I honestly think the LS is one of those engines that most consider acceptable to put in anything. Can't beat the HP to weight ratio.


Everybody hates US engineering but think how powerful and effecient that powerplant line is compared to how simple the design is. No variable 30 something valves or 20 other electronic goodies needed. Not sure if it can park itself though. I know off topic.

[WS6]

Please ! It doesn't need to park itself. An LS powered car stops where it wants to and all others go around it.

[Ralph LoGrasso]

An LS powered car stops where it wants to and all others go around it.

LOL! That's a good quote; I'm sure the guys on tech would love it.

[MonzaRacer]

I would have ran a stroked 400. turn down the 455 crank to 400 spec (less friction) do step up for better rods as the Arma-Cast are only good to 5500 stock and a stretch of 6000 if polished/shot peened,new bolts and resized and no detonation.
Stock cranks hardly ever break but getting it either hard chromed (I have a 389/400 hard chromed crank) or nitrided for surface hardness.
For pistons either hyoertecs for low rpm engines or forged if you just gotta run the pee out of it.
As for the top end for protouring Edelbrock makes the best bang for the buck on Poncho but as for intake and cam give Rock and Roll engineering a call, those guys can make almost any Pontiac run hard.
top it with a Carb Shop tweaked Qjet for torque motor and a well modded Holley if you gotta rpm it.
BUT if I had my druthers I would look around for a Commander 950 or similar 4 bbl throttle body and look at a Megqsquirt for a FI. Drill what ever intake you like for injectors or use the 4bbl TBI. Let a tweaked HEI from DUI run the ignition and fix up a Megasquirt for closed loop fuel control.
Good headers and a decent true dual with X pipe and some mellow mufflers and hae fun.
Add in some fun gears like 3.42 or 3.73 and a TKO600 for the row factor as it will be a torque monster.
Properly built the 350 through 455 Pontiacs with good aluminum heads are torque makers and will weigh in less than a SBC if I remember correctly.
Good luck how ever you go.

[LONE*STAR]

I had this same convo with freinds about a year ago when tearing down my 67 400 firebird, there is no right way to go, but Im damn glad I kept my 400... whoops my friends 4th gens all the time.

spec....... .40 over balanced stock low end, trw forged 10.8/1, stock rebuilt heads w, ss valves ect, elderbrock intake, 850 cfm holley hp, big cam (can dig up spec if needed), msd 6al,blaster ect. less than 4500 including machining and assl of the short block.

[Roadrage David]

OK first of a high perf Pontiac injun engine is NOT more ecspensife then a chebby ..infact you have BETTER big block performance on the streets then useing a BIG block chebby. the injun mill is a intermidiat engine qua weight. i got a Central Verginia Mashine Sirves 400 stroker to 461 ci 550 hp 577lbs feet of torque,6200 rpm red line, and it kicks chebby ass beeing it small ore big block. the MYTH to use a chebby for power and ore save costs are old whife tales these days... the last couple of years are suplying us with tremendes amounds of quality afthermarket parts. the new indian adventure TIGER heads is one aczample they flow 400cfm out of the box!! . there are now 5 afthermarked type of heads 3 afthermarked engine bocks ecetera ecetera.. infact the pontiac franety hase a unicum availeble to them that is revolutionary WITCH NONE of the traditional ore modernday v8 american brands hase . chek this site chebby boys and eat your harth out. i got a set alredy!!!! PONTIAC V.TEC http://www.vari-lift.com/ i dont have to ecsplain the work of the SWISS now do i yes the injun mill is coming closer and closer and soon it will not only be Furd and Chebby but Injun as wel......last but not least haveing a chebby in your poncho these days is defenatly not cool you WILL be the step child forever not having a real poncho nore a chebby,,,,,,,,,..............