The LS7 comes out this month
Supreme Member
iTrader: (1)
Joined: Sep 2000
Posts: 1,061
Likes: 1
From: St. Louis, MO
Car: '91 GTA
Engine: 402ci LS2
Transmission: faceplated T56
Axle/Gears: 9" w/ 4.11's
Originally posted by KiLLJ0Y
i know that the LS2 heads will bolt to an LS1 block.. i wonder if the LS7 heads will bolt to the LS2. if so.. they will work with LS1.. BUT im sure you would need the LS2 or LS7 intake to make it all work.
i know that the LS2 heads will bolt to an LS1 block.. i wonder if the LS7 heads will bolt to the LS2. if so.. they will work with LS1.. BUT im sure you would need the LS2 or LS7 intake to make it all work.
Senior Member
iTrader: (1)
Joined: Nov 2002
Posts: 889
Likes: 0
From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
Originally posted by GTA91
Yeah, I know a few guys here in St. Louis that run big cube LSX motors... Doc Otis runs a 427 (5.7 based) and he's had more than a few issues with it... I think they are all ironed out now, but he went thru hell for awhile. It runs in the high 8's or low 9's now I believe. Another local guy has a 422 with no issues that I know of... yet. He's currently the fastest N/A LSX/6spd in the country. There are a few others around here too... 427's seem to have issues though.
Yeah, I know a few guys here in St. Louis that run big cube LSX motors... Doc Otis runs a 427 (5.7 based) and he's had more than a few issues with it... I think they are all ironed out now, but he went thru hell for awhile. It runs in the high 8's or low 9's now I believe. Another local guy has a 422 with no issues that I know of... yet. He's currently the fastest N/A LSX/6spd in the country. There are a few others around here too... 427's seem to have issues though.
and no an LS7 head wont work on an LS1 based block (or ls2 for that matter). the bores arent big enough for the LS7 head to fit and the LS7 intake ports are different than the ls1 based intake ports.
FWIW, HPE (Horsepower Engineering, a sponsor of ls1tech.com) just put down 554rwhp with a cam/long tubes/cai LS7 with NO tuning. it put down 705rwhp with a 150 shot of nitrous still on the stock tune. they are waiting for the tuning software to be released and then all hell will break loose.
Supreme Member
iTrader: (1)
Joined: Sep 2000
Posts: 1,061
Likes: 1
From: St. Louis, MO
Car: '91 GTA
Engine: 402ci LS2
Transmission: faceplated T56
Axle/Gears: 9" w/ 4.11's
Originally posted by 1bdbrd
i thought Doc went with an iron block 422 like Tim Tosto did?
and no an LS7 head wont work on an LS1 based block (or ls2 for that matter). the bores arent big enough for the LS7 head to fit and the LS7 intake ports are different than the ls1 based intake ports.
FWIW, HPE (Horsepower Engineering, a sponsor of ls1tech.com) just put down 554rwhp with a cam/long tubes/cai LS7 with NO tuning. it put down 705rwhp with a 150 shot of nitrous still on the stock tune. they are waiting for the tuning software to be released and then all hell will break loose.
i thought Doc went with an iron block 422 like Tim Tosto did?
and no an LS7 head wont work on an LS1 based block (or ls2 for that matter). the bores arent big enough for the LS7 head to fit and the LS7 intake ports are different than the ls1 based intake ports.
FWIW, HPE (Horsepower Engineering, a sponsor of ls1tech.com) just put down 554rwhp with a cam/long tubes/cai LS7 with NO tuning. it put down 705rwhp with a 150 shot of nitrous still on the stock tune. they are waiting for the tuning software to be released and then all hell will break loose.
Yeah, I can't wait to see what these guys start putting down with modded LS7's... 700RWHP with those mods is insane!
Senior Member
iTrader: (1)
Joined: Nov 2002
Posts: 889
Likes: 0
From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
Originally posted by GTA91
Doc did have a few 427's in his car... maybe its a iron 422 now... not sure. Either way, at one time it hauled *** with a LS1-based 427.
Yeah, I can't wait to see what these guys start putting down with modded LS7's... 700RWHP with those mods is insane!
Doc did have a few 427's in his car... maybe its a iron 422 now... not sure. Either way, at one time it hauled *** with a LS1-based 427.
Yeah, I can't wait to see what these guys start putting down with modded LS7's... 700RWHP with those mods is insane!
Supreme Member
iTrader: (1)
Joined: Sep 2000
Posts: 1,061
Likes: 1
From: St. Louis, MO
Car: '91 GTA
Engine: 402ci LS2
Transmission: faceplated T56
Axle/Gears: 9" w/ 4.11's
Originally posted by 1bdbrd
slightly off topic, but are you going to the shootout march 11th? i REALLY want to see your car in person as its almost exactly the same as i want to do to mine.
slightly off topic, but are you going to the shootout march 11th? i REALLY want to see your car in person as its almost exactly the same as i want to do to mine.
I'm not afraid to drive it 5 hours but if I break then I'm screwed... we'll see. If nothing else I might go and take the GTO or GTP! 
Thread
Thread Starter
Forum
Replies
Last Post
Bohemian
Aftermarket Product Review
11
Nov 25, 2015 09:38 PM