low-end torque+ LSx motor, is it possible?
04-19-2009, 10:57 AM
#51
To add more to this thread... I've been reading a lot on ls1 tech and if you want to spend the money.. get a set of afr 205 heads and have them ported by Tony Mamo from AFR. All the reviews say it gives the motor amazing low end and throttle response. The intake ports are smaller than the stock 317 (205 vs 210 I believe) and they flow much more. That means huge port velocity, which means tq!
04-21-2009, 04:22 PM
#53
i guess i don't get it. did the old small blocks really have that much down low or did it just seem like it because it fell on its face so soon? has anybody ever dyno'd a newer and old truck stock for stock and see how the low end torque compared. it seems to me it may be similar but not feel like it because the 5.3 keeps going and feels better and better as it goes. i know mine has great low end and pulls fine. i have a buddy that pulled horses with his 1500 silverado 5.3. he had a cummins for doing this on normal basis but towed with the 5.3 when he needed to. granite i have a sc3200 from yank now but when it locks up its great. i went to the sc3200 from a tt3000. the tt300 was just too loose and felt like crap down low. felt like i had no power unless i had over 1/2 throttle. with the tight converter it feels way better. i was driving through mountains in Tennessee and the thing never down shifted and the tcc never unlocked. pulled them no problem. 35-40% throttle. i logged it.
but maybe its just me.
fond a site with some ls1 lt1 lt4 dyno's. stock for stock it doesn't look too much different in the down low area.
http://www.lt1.net/dyno.htm
but maybe its just me.
fond a site with some ls1 lt1 lt4 dyno's. stock for stock it doesn't look too much different in the down low area.
http://www.lt1.net/dyno.htm
Last edited by 4.8T; 04-21-2009 at 05:03 PM.
04-22-2009, 12:38 AM
#56
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I have great low end torque on my truck. hell, part throttle and I cant keep it stuck from a stop, on 34" all terrains.
thats what i call great low end tq to me. Im probably about to lose that with the new setup, but I'll gain much more all over the rest of the powerband.
thats what i call great low end tq to me. Im probably about to lose that with the new setup, but I'll gain much more all over the rest of the powerband.