View Full Version : ASA LS1 race motor
Tom Welch
03-11-2006, 05:52 PM
Would this engine be a good choice for a street car?
are you getting this motor from Grimes in ATL also? i dont know the specs honestly but I may be dropping one into an 04 GTO soon.
Tom Welch
03-12-2006, 09:57 AM
No, I'm researching LSx options for my 67 Firebird, my other option is the 428 Poncho that I have. I'm weighing the options, literally and figuratively. I'd probably keep the 428 if I had a reasonable chance to achieve 20 plus mpg with it, doubtful though.
68fusion
03-12-2006, 02:53 PM
The ASA stuff I think is still "crate" based, so the LS1 would be a stock "sealed" GM engine. If memory is correct, they pass out computers before the race starts to prevent tampering.
oh ok. well what you might consider is to build the 428 with lower compression so you can run 87 octane. put an overdrive trans behind it and you might not make 20mpg but if you get close enough the cheaper gas might offset the loss in MPG. of course if you have certain power goals in mind then my idea might not work.
im pretty sure the ASA motors are more built than a crate motor. if the motor im installing is an ASA spec motor as ive been told then why would the owner swap from one stock LS1 to another? i could be wrong though as i honestly dont know any specs on this motor other than its an LS
rocketman
03-12-2006, 06:46 PM
asa engine's were built by lingfitler.they had good parts and i diff cam.teams were given pcm's to test on and then given race tune computers at the race.they made around 550.
Tom Welch
03-12-2006, 08:07 PM
Well, 500 flywheel hp is a snooze for the 428, but the weight penalty and limited rpm range (5800 is safe) would seem to offset the power capabilty. I seek the most power for a normally aspirated street friendly engine. Does the LSx suffer much of a fuel efficiency 'penalty' when cams and such are upgraded? Is the trans the key to the efficiency of the LSx? The ASA engines are rated at 485 flywheel hp.
68fusion
03-13-2006, 03:33 AM
http://www.brownandsonsauto.com/crate_engine_program.htm
What about Durability? Will a Crate Engine Last?
GM's Crate Engines have proved themselves on and off the track for durability. Hundreds of engines have competed full seasons at local short tracks around the country. They have been successful at 12 hrs of Sebring, IHRA drag racing and the One Lap of America. Some engines are still competitive after two seasons with normal maintenance. The ASA program has proven that "Assembly Line to Race Track" can work. ASA engines are on their second season with no reported engine failures other than team errors.
Tom Welch
03-13-2006, 04:53 PM
Durability is also very important, my last 400 inch Pontiac lasted 12 years driven daily and dogged out frequently. I see no less durability from an LSx engine. Fuel efficiency is another matter however.
the over drive transmissions help the fuel economy greatly with the LS engines. the other part is simply the tunning capabilities with the ECM. its not uncommon for a heads/cam LS to still pull around 20mpg on the open road and be capable of around 400rwhp. put that in a low 3000lb vehicle and your gonna fly. throw a blower on there and you've got even more power and until you put your foot into it, no loss in MPG.
element180
03-20-2006, 04:12 PM
The only real 'specs" I've found on the ASA LS1 are
Cam:0.525"/0.525" lift 226/236 duration @ 0.050" 110° °lsa hydraulic roller
Heads:GM part # 12480109
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