dreadedboost

iTrader: (4)

I wasn't quite sure where to post this but looking for opinions, I realize this is a lsx forum but a 502 bbc is undeniably badass.

Here's what I'm looking to do, I have a few motors and trying to decide what will be best for my 93 CCLB 3500 dually with 3.73 rear end and my 71 Nova. Truck wont be doing any hauling heavier than the Nova itself so light duty really. A short background, I bought used as I needed something cheap to replace my diesel and with some good luck it came with a Gen 6 bbc roller 502 with only a few thousand miles on it. I also have a 02 lq4 6.0. Basically just trying to decide what will be best utilized in the truck/car. Nova is basically my go-fast toy.

I'm considering using the lq4 in a carbed configuration with the trucks current 4l80e and the 502 in the nova. Basically asking if the 6.0 will be sufficient in the truck to tow that weight and still get decent mileage? (gets 12 currently) Or is there more performance potential with the lq4 and leave the truck alone?

GNCLONE

That's a win/win scenario there!

If they were both stock the LQ4 beats the BBC IMHO.

dreadedboost

iTrader: (4)

The BBC isnt technically stock, it has Edelbrocks Performer Multi-Point efi that replaced the tbi setup and their matching midlength style headers. Supposed to be rated 375 hp / 515 torque with just the cast manifolds. Basically what is cheaper to modify? Gen 6 BBC's utilize Gen 4 style heads/intakes I have found.

The stunningman

iTrader: (47)

Leave the 502 torque monster in the Dually. Build the Lq4 for the Nova. Its not going to be cheap to build either for racing, but its going to be expensive to mod both as needed for this criss-cross scenario.

1970camaroRS

iTrader: (8)

What is the Nova set up for right now? SBC?

speedtigger

iTrader: (16)

Here dig on this thread:

https://ls1tech.com/forums/racers-lo...rip-video.html

I would not trade my LQ9 for a Big Block in a muscle car.

3pedals

iTrader: (3)

I took out a mildly built 460" BBC from my camaro, and went with a junkyard 6.0, with cam/springs, and the difference was .63 quicker with the LS
460"BBC = 12.02 @ 115
364" 6.0l LS = 11.39 @ 120

Bottom line is what budget are you gonna work with?
The 502 BBC can be made to push around 700hp N/A with a good top end/valvetrain($$$), and the LS could probably go 600+ish hp N/A, also with good heads/valvetrain($$$). Both will cost a few bucks, but a low budget 6.0 could do 550 without breaking to much of a sweat. jmo....

dreadedboost

iTrader: (4)

This thread is quickly changing my mind. The nova currently has a 406 sbc, profiler air wolf 220cc heads. Isky 570a mech cam, prosystems 950dp, msd 7al3 w/ crank trigger, hooker super comps, team g single plane, 4k stall, 700r4, 4.11s aand 26in m/t et streets. Runs hard for a pump gas tappet cam car.

3pedals

iTrader: (3)

seriously, just toss a roller cam in the 406 and let it eat, when it dies look at an LS

Paul57

If you plan to run the Nova on the street I would definitely go with the LQ4. 6.0's don't seem to get stand out MPG's in heavy duty trucks. From what I have heard and read, I don't think they do better than 15 and that is unloaded at 55. LS performance cars can get in the mid to high 20's.

Doug G

Tired old school 406 SBC here.... going LSX if that tells you anything

bitterman

If yo have a 406 it would be more cost effective to just change the cam/valve springs etc for more power.

What are you currently running?

If its a race car you might want to look at increasing your compression, Get a good set of l92 heads, right cam/valve-train etc and you could see 500RWHP with the right setup. More on race gas with alot higher compression ratio! Look on the site and copy every aspect of one of this higher HP builds and you should be golden and running in the 10's NA as long as you can get the power to the ground!

Bruce

dreadedboost

iTrader: (4)

The nova currently has a 406 sbc, profiler air wolf 220cc heads. Isky 570a mech cam--details, 286/290 duration (258/262 @ .05), 106 lobe center .608 intake/.617 exhaust lift with probe shaft rockers, prosystems 950dp, msd 7al3 w/ crank trigger, hooker super comps, team g single plane, 4k stall, 700r4, 4.11s aand 26in m/t et streets.

It runs plenty hard for the street now but I always wanted more. I picked up the lq4 dirt cheap and complete knowing its potential and want to have another motor ready when the sbc lets go finally. Basically doing this to keep my hands busy.

The stunningman

iTrader: (47)

I would pull the 700r4 and the 4.10's and change it out to a TH350 and 3.73's. IMO you would have a better powerband.

speedtigger

iTrader: (16)

I don't know if your Nova is street driven. But, I personally would never pull an overdrive trans out of a regularly driven street car. Screaming down the road at a 3000+ RPM cruise sucks big time.

The stunningman

iTrader: (47)

The statement is made for much the same reason I'm guessing you skipped the 700R4 and went with the 200r4. Do the math 3.08 1st gear x 4.10's 26 inch tall tire..... then the second spacing is a little wider than desirable IMO. For bracket racing the TH350 will be the faster, more reliable and economical choice. Sure the 700r4 will get better mileage on the highway as long as the lock-up is working and toggled (especially with the 4000 stall). Should we really even talk mileage with a 4000 stall?

My blazer has a 5 speed manual, daily driven anytime I want to. The 6.0 Dakota had a T56, but with the rollbar, I really don't like daily driving it so I am now running a TH350 I built. It has a 3000 stall and 3.73's I will drive it anywhere. I don't mind 3,000 RPM's 60+ mph and I still have plenty of top end.

Regardless its just my opinion, from experience, that he would most likely go faster with what I recommended.

speedtigger

iTrader: (16)

I went with the TH200-4R because the transmission builders I trust the most said it was a stronger and more reliable unit than the 700R4. The superior gear ratios are a nice bonus.

The lock up is nice too, but the reduced wear and tear of lower RPM cruise is nice. I have not tried it with a 4000 converter, but with my 2800 converter overdrive works well even with the converter unlocked.

dreadedboost

iTrader: (4)

I only have the 700r4 since it came with the car and has stood up well to this setup I have now. Id much prefer a t56 but this still pulls 15mpg hwy. Luckily even with the 4k stall it gets through the gears so fast mileage has never been a concern. Also bracket racing is cool but it ain't my thing, heads up and safe street encounters are my thing. The 700r4 1st gear with my setup is a bit short but it hooks well and pleases me for now.

Paul57

Just wanted to let you know that OD tranny's don't need to be "toggled" for lock-up. They make a vacuum switch.

More speed is great until you can't justify the added expense of terrible MPG's.

twin74s

iTrader: (10)

its been said more than once already but i had a 9-1 454, comp cam, roller rockers, dual plane and a 830 holley, TH350 3k conv and 4.11's car went 12.4x's@107

00 ls1, arp rod bolts, texas speed 233-239 cam setup pacesetter f body longtubes,same 3k conv,TH400 and a 3.25 gear car went 11.95@ 113 on a crappy 1.8x 60ft