Thread: Manual 3800T taking a dump on some 560whp AWD street monsters

@ Slowpoke the more appropriate question is why not. ctually id rather the datsun but the rx7, is extremely light(2400lbs), cheap($4-500), not so old as the are rare, collectible or vintage(1985), rwd, have decent aerodynamcs and handle phenominally. Guys swap in the grand national 3.8s & lsx and run very low times, have a mild mannered car and good gas milage. The marriage of a series II & a datsun or 7 wud be devine to say the least.

Buick Powered RX-7 Website - Lot's of great info! - RX7Club.com

Slowpoke-thanx bro, i am rather cool lol.....I'm looking fowad to thi mini-car debate cause u seem like a guy who knows his shiiiz, & i can appreciate that.

The equation LS>3800 is incomplete, silly even w/o acknowledging the desired goal, (mine is a lightweight, reliable, descrite, affordable, sleeper that can run in the 10s, and is relatively docile on the street to be moderatly daily driven.) My philosophy is enough is cool but too much isnt cool.

lsx's Canidacy:
1. The LSX platforms generally dominates as a result of cubes, but to stave off a turbo Series II or Lc2 in a 2500lb car you gotta throw boost at the truck motors or n2o @ the pass car versions. A 800hp motor would also need adequate trans, rear axle, fuel system & suspension. Bench racin a turbo lsx in a 2500lb car is cool but actually cutting a good 60ft is different.
2. even my lil sis knows that a mazda or datsun aint supposted to sound like a vette, so i doubt ill rope any1 into a race 4 cash (We bet out in philly)

Boosted 6 bolt main 3.8: Accomodating, adequate but not excessive.
The series II & III acomplishes all the above, even some of the goals the lsx cant. For pennies I'll build a series III. l67 or l32 block, fbody intake manifolds, modded fbody exhaust manifolds w/a 4l60e from a fbody. With traction, a decent stall, nissans r200 rear, moderate sized turbo(PT6776 ??), injectors, Walbro 340 gpl Fuel pump, intercooler, Cam, 1.9 rocker, ls6 valve springs & racegas I'm @ my 10s goal(eg Darkhorizons sinfully fast feiro). Remember I technically dont need to run a 9.3 @ 150mph, i jus need to be across the finish line b4 da cat next to me.

Grand National, where boosted 3.8 made a mark.
If you check the dates im sure you will see that when mike/misred built this 3.8 rx7 it was yrs ago, prolly b4 ppl were throwin flipped manis & slappin turbos on lsxs. I have a friend w/ a 99 ws6, another friend w/ a terminator cobra & i have a turbo regal. While the larger displacement lsx does have more max hp potential, it will in no way make more torque than the lc2/grand nat motor w/ the same minimal amount invested($5-600).

For $1500 you could have a L67 making 500+whp... Finding any LS long block would run you that much. (yes you can get cheaper iron blocks).

For cars that grudge race on the street.... Wierd unknown setups that make big power and hook up will make alot of money. (I wonder how I know).

darkhorizon-rmember me yet lol??

Dont get me wrong i got love for the lsx but in a small rwd import it in no way allows for a sleeper. Not to mention w/ a turbo lsx set up you also need alot of other parts. Built trans, built rear, crazy fuel system & a very strong suspension. I dont really need all that. In a 23-2500lb car you dont need alot of power to run fast & hard. Now if i were to do a motor swap in my buick it would beturbo lsx all the way!!!

Who told you a 3800 was lighter than an LSx?

matt5112-i believe u misunderstood my post wrong Acki. I said "my goal is a lightweight, reliable, descrite, affordable, sleeper that can run in the 10s, and is relatively docile on the street to be moderatly daily driven.)"

As in the car(sleeper) is lightweight(2500lbs) and quick. not the weight of the actual motor but the entire build. Although a 3800 IS slightly lighter than some lsx(iron bock). The all alum ls1 weighs around 500lbs+
Weight of LS1 - LS1TECH
So i imagine the lq4, lm7, lq9 ect are heavier, dig?

I have never cared about engine weight... 99% of most of the cars out there can add or subtract the weight you would have on a motor somewhere on the chassis with minimal work.

And a series II is 550+.

no the series II is about 400lbs, not 550 kid.

Originally Posted by bluegtp91

Actually...the N/A L36 weighs 392 pounds...which is about a good one hundred pounds LESS than a supercharged L67. The Supercharger and all the accessories add quite a bit of weight.

This argument is a bit hard to have.. you could easily start factoring in quite a few different options that 3800s have to determine weight...

The simple fact is, weight is a moot point.... this situation of a turbo setup with a fbody intake, weight is going to be around what a LSx is going to be with similar turbo setup...

And as I said before... take a crap and hit the gym before you go racing if you are so worried about weight.

Well, our cars sound like jet liners... so you are probably going to miss the boat on noise unless you go with an involved exhaust setup.

Took this to the track recently... It went 11.4@132 mph on a little shakedown pass.... He didnt listen to me when I told him to run my slicks, and he ended up breaking an axle when he put the pedal down the next pass/