FAQ |
Members List |
Social Groups |
Calendar |
Search |
Today's Posts |
#101
|
|||
|
|||
Small world. I have a 6.0 LS in my 71 Cutlass and an EFI 462 in my 63 Catalina. Both are fun in their own right, but as of right now the Cutlass is much faster.
|
The Following User Says Thank You to 62posbonny For This Useful Post: | ||
#102
|
||||
|
||||
What sort of mileage did you Cutlass drivers get? Were they 6L80E's?
|
#103
|
|||
|
|||
My tune needs a little brushing up on light load cruise I believe, I'm only getting 19mpg with a built 4l60e and 3.73's. Made 428hp/400tq at the wheels with a really mild 227/232 street cam. Makes for a fun driver.
|
#104
|
||||
|
||||
Quote:
__________________
"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
#105
|
||||
|
||||
I really haven't driven my Cutlass enough to even bother calculating MPG. It is a cathedral headed motor, 4L60.
My '01 Formula with 4L60 and 2.73's got 25+mpg on a highway trip a few months ago. My '73 has 3.08's, and on a recent hwy trip it got a bit over 13mpg. It also recently ran a traction-limited 13.20 @ 102.9. I know the Cutlass is quicker, but it is a convertible and hasn't been to the track since the swap.
__________________
'73 T/A (clone). Low budget stock headed 8.3:1 455, 222/242 116lsa .443/.435 cam. FAST Sportsman EFI, 315rwhp/385rwtq on 87 octane. 13.12 @103.2, 1.91 60'. '67 Firebird [sold], ; 11.27 @ 119.61, 7.167 @ 96.07, with UD 280/280 (108LSA/ 109 ICL)solid cam. [1.537, 7.233 @93.61, 11.46 @ 115.4 w/ old UD 288/296 108 hydraulic cam] Feb '05 HPP, home-ported "16" D-ports, dished pistons (pump gas only), 3.42 gears, 275/60 DR's, 750DP, T2, full exhaust |
#106
|
||||
|
||||
The ebay turbo builders are BURNING through the LS supply, though. In 10 years, it will be tough to find a decent junkyard.
The supply will be dwindling because all the GM trucks received a LS engine in the early 2000s, if they didn't buy a V6. Now I see a Cadillac SUV over the past weekend with a 2.0 Ecotech with a turbo, so with GM following ford toward downsized displacement, and turbocharging, the V8s will be going away in the light duty trucks/SUVs, cutting into the supply of good used engines. I also own Stratostreak powered cars, and an 05 LS2 GTO. There is no doubt that GM taking all the cues from all divisions V8s, and applying them to one engine (LS) was advantageous. The refinement of fuel and spark controls and computer aided designs for such things as port design, cam and lifter design, all helped over the pre 1955 designs of the original Stratostreak engine. One of thre main advantages is weight savings, vs bottom end integrity by using the skirted block design. I dare say if the early Pontiac Stratostreak design team could see into the future, they would have used a skirted block. They did look into this strengthening the bottom end in the still born OHC concept engine that was shown on Hot Rod magazine cover in the late 60s/early 70s. Fortunately the aftermarket has been pretty kind to the Stratostreak engine, so where the factory dropped off, the aftermarket picked up. It's still an early 50s design, and we can only do so much to try and keep up with other engines in design. My first love will always be the Stratostreak engine, but time marches on, and there is no factory producing Pontiac V8 engines. Even if Pontiac was still around, they would have adopted another design of V8 by this time. You have to give the initial design team credit for closing in on 70 years their engine is still around in the high performance arena. Just look what the Boss Bird team did with it on nitro. I don't think there are ay LS blown nitro cars that I'm aware of, but admittedly, I don't follow drag racing that closely either. Every engine design does some things well, the search is for engine designs that do the most things well. Pontiac has to be in there, because it's still around enough to be noticed. How many choices are there for aluminum cylinder heads?
__________________
Brad Yost 1973 T/A (SOLD) 2005 GTO 1984 Grand Prix 100% Pontiacs in my driveway!!! What's in your driveway? If you don't take some of the RACETRACK home with you, Ya got cheated |
#107
|
||||
|
||||
Quote:
Once the aftermarket really gets in gear on the later stuff and more hit the boneyard they will be more prevalent in builds. Not sure how the later aluminum blocks will do with the turbo stuff. |
#108
|
||||
|
||||
The race never happened. The LS car packed up and went home rather than race. The video is of our first test pass. Thanks for watching.
|
#109
|
||||
|
||||
DIRECT INJECTION is not necessarily the best solution for a street performance vehicle
as historically the cam driven Fuel Pumps were typically limited to about 425 HP. Food for thought. The hot set-up would be to investigate what the 800 plus HP Mopars are doing and the latest LS engines HP numbers vs direct injection. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#110
|
||||
|
||||
Quote:
|
#111
|
|||
|
|||
Quote:
But the main reason I hate chebbys in Pontiac is the Chevrolet itself snuffed all the prototype Pontiac engines that would have beat the Vette. They had veto power. The 1970 10-1 SD 455, 428 RAV with 2x4s and a tunnel, 1970 SOHC Hemi Mod engine. Why was there never a high performance 428-455 in the GTOs and Birds ? They would not let those engines see the light of day. And that is what I have against them. Dan Whitmore told me all about it. Friends with Tom Nell. Held the 96 casting 90 cc 455 SD heads in his lap. Down to the tubes in the intake runners. 2 sets were made. |
#112
|
||||
|
||||
|
#113
|
||||
|
||||
I like Chevy engines in Chevies, Pontiac engines in Pontiacs, cheese on cheeseburgers, ham on hamburg ... hey, wait a minute!!!
|
#114
|
||||
|
||||
If you think the LS platform is bad, you're a fool. Have an intelligent discussion about the design differences if you want to make good use of your time. Quit the defensive excuse making. I used to be a retrofit hater. I'm over it. I'm putting an LS (actually Vortec) engine in my '64 GTO. For the street, I'm gonna love it. I also have most of my Poncho parts. So I can build a drag car or something if I want. Brand allegiance is a joke anyway. LS engines aren't SBC, new Hemi is not a Hemi, SBF.... Hot Rodding has always been about stuffing big power in light vehicles. Embrace it and smile wide!
If you're a Pontiac purist, put one of these in your car: https://en.wikipedia.org/wiki/Pontiac_straight-8_engine Otherwise you're a sellout poser!!! |
#115
|
||||
|
||||
Even though the Pontiac Brand and GTO is dead, GTO never mean 389 or 400 engines.
Gran Turismo Omologato means Grand Touring Homologated, meaning certified as Grand Touring by FIA(Federation Internationale d'Automobile). A GTO could be Ford vehicle that met those qualifications: A Grand Touring Homologated Automobile. Have to smile when I read that Pontiac INVENTED the GTO in 1964. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#116
|
|||
|
|||
Quote:
Ken moved on to Audi so looks like he has handed the Hoonicorn down. Can anyone imagine what it would be like to be born into that heritage. Not quite the same horse most 14 year old girls want. https://www.youtube.com/watch?v=Bc8Yj9J8MQs Barry |
#117
|
||||
|
||||
She probably has better driving skills vs the entire field of women who drove in NASCAR races even at 14 years of age.
And she probably would be less likely to get hurt in a NASCAR "spin" (where a driver gives her a welcome to NASCAR "tap"). That being said the engine in the car is far from a stock mustang. Same deal with LS engines and "other" LS engines. Or Pontiac Engines vs "other" Pontiac engines. The European Pontiac race vehicle as a example. Roger's Car. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#118
|
|||
|
|||
It’s like sticking with a Flathead vs a V8..
|
#119
|
||||
|
||||
Quote:
It's all good with me. We have Fords, Chevys, and Pontiacs in the stable. One Pontiac I had came factory with a SBC in it (71 Ventura Sprint) I actually got a kick out of the look on peoples faces when I'd park with a Pontiac group. I'm okay with all of it. I just enjoy the car hobby for what it is. All the silly bickering about this is better than that is fine for others if that's what they want to do with their time. Personally I don't care. I'm more about driving the wheels off them, race them, and just all around enjoying them no matter what the brand is. I'm just happy seeing classic cars on the road and if that means someone has to swap in their favorite drivetrain to get it on the road, then so be it. It's not mine to tell them what to do. Just drive the damn thing |
The Following User Says Thank You to Formulajones For This Useful Post: | ||
#120
|
||||
|
||||
Funny thing is the Pontiac guys aren't alone in the don't put a LS in every old muscle car. Believe it or not there are some guys that own and admire the early malibu/chevelles/camaros, etc. aren't all that keen on replacing the SBC/BBC engines that the cars were born with, with a LS engine either. Pretty sure olds, and buick guys have the same tug o war internally too.
I know most people think/refer to an LS engine is a chevy, but it's really not, it is a true corporate engine that now is the official V8 of every brand GM has left since 1998. Buick, Cadillac, and chevy, GMC all get the same corporate engine/engines, so it isn't a chevy engine It's what ford and chrysler did back in the 60s, went to one engine for every division. I.E. there wasn't a 426 plymouth hemi, and a 426 dodge hemi, it was a 426 chrysler hemi. Same engine in both divisions.
__________________
Brad Yost 1973 T/A (SOLD) 2005 GTO 1984 Grand Prix 100% Pontiacs in my driveway!!! What's in your driveway? If you don't take some of the RACETRACK home with you, Ya got cheated |
The Following 2 Users Say Thank You to Sirrotica For This Useful Post: | ||
Closed Thread |
|
|