I see alot of people have swaped their 4.8/5.3's to LS1/LS6 5.7L motors. Just curious if you will loose that low end torque that trucks need? Or perhaps did it not even bother your power?
thanks
I see alot of people have swaped their 4.8/5.3's to LS1/LS6 5.7L motors. Just curious if you will loose that low end torque that trucks need? Or perhaps did it not even bother your power?
thanks
2000 5.3L A4
Fuddle 2800 + CF 100 jet + HP Tuners
ETstreets + Dual cut outs + KP 4 link
http://memimage.cardomain.net/member.../496250_63.jpg
I don't think you'd lose much if any bottom end power... those motors have more displacment and that usually equates to more torque.
Well if they had a cam like a 224/230 .556/.575 110LSA then you'd lose lowend...
The superior man is modest in his speech, but exceeds in his actions. - Confucius
"He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel
'01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
'80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL
Let's face it, the red hair... makes 'em wet.
alright, thanks man
2000 5.3L A4
Fuddle 2800 + CF 100 jet + HP Tuners
ETstreets + Dual cut outs + KP 4 link
http://memimage.cardomain.net/member.../496250_63.jpg
I swapped my 5.3 for a LS1 in my 99 GMC Sierra. I used the truck PCM and 1st used the LS1 intake. I swapped the LS1 intake back to the truck intake, more lowend torque.
The donor vehicle was a 99 TA, suppose to have 305 hp at the fly wheel.
My last dyno, with stock internals, was 250 rwhp and 296 lb/ft of torque. I am having a problem with 8* of false knock so I know there is more power to be gained.
I recommend this swap, it's what should come in these trucks from the factory.
ts99
99 GMC, ECSB w/ LS1 from 99 TA
E-fans, 3:73, Eaton posi
Ah yes, the typical 1999 model false knock. I'd get that cured and see what kinda numbers you will put down...Originally posted by Trucked-up@Jan 5 2004, 03:25 PM
I swapped my 5.3 for a LS1 in my 99 GMC Sierra. I used the truck PCM and 1st used the LS1 intake. I swapped the LS1 intake back to the truck intake, more lowend torque.
The donor vehicle was a 99 TA, suppose to have 305 hp at the fly wheel.
My last dyno, with stock internals, was 250 rwhp and 296 lb/ft of torque. I am having a problem with 8* of false knock so I know there is more power to be gained.
I recommend this swap, it's what should come in these trucks from the factory.
ts99
The superior man is modest in his speech, but exceeds in his actions. - Confucius
"He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel
'01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
'80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL
Let's face it, the red hair... makes 'em wet.
stock compression on an fbody ls1 is 10:1 right? I was thinkin about some Patriot Performance 5.3 Stage II heads. what do you guys think the compression would run after a head swap like that? Some reason i was thinkin 10:6 or 7. Think i heard someone say that one time, but im not sure. and whats the highest compression you can run while still using pump gas?
2000 5.3L A4
Fuddle 2800 + CF 100 jet + HP Tuners
ETstreets + Dual cut outs + KP 4 link
http://memimage.cardomain.net/member.../496250_63.jpg
my friend here has the Patriot stge 2 5.3's and runs 11.1:1 i think, but he had em milled just a bit for a tad more compression.
Hugger Orange 99 SS Hardtop #756
485rwhp/440rwtq SAE
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