H/C vs. F/I
03-10-2006, 11:19 AM
#1
H/C vs. F/I hey guys, i dont know squat bout F/I at all..lol. but anways can you give me me a feedback between the pros and cons of H/C vs. F/I. and also, which supercharger will be more efficient and user friendly? how much hp can you run on a stock ls1 block...car is an auto by the way. how much boost..and stuff like that...car is a daily driver all street no track if that helps...
03-10-2006, 02:37 PM
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heads/cam will be cheaper for the most part.
if you go supercharger, expect around mid-upper 400's rwhp with like 9 lbs(which I wouldnt run more then that).
This woudl include all bolt ons and supportive mods.
I would suggest though at least switching to 6.0 heads. It will lower compression and make it safer for you to get in the upper 400's.
if its stock internals, and you dont change out the heads, you prob dont wanna run more then 6 lbs or so, and should net you 400-430 or so rwhp.
if you go supercharger, expect around mid-upper 400's rwhp with like 9 lbs(which I wouldnt run more then that).
This woudl include all bolt ons and supportive mods.
I would suggest though at least switching to 6.0 heads. It will lower compression and make it safer for you to get in the upper 400's.
if its stock internals, and you dont change out the heads, you prob dont wanna run more then 6 lbs or so, and should net you 400-430 or so rwhp.
03-10-2006, 10:20 PM
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Originally Posted by 2000 Tran Zam
if its stock internals, and you dont change out the heads, you prob dont wanna run more then 6 lbs or so, and should net you 400-430 or so rwhp.
03-11-2006, 02:59 AM
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given that 430rwhp H/C would beat a 430rwhp FI car just because the naturally aspirated has its advantages, however you can be much more stealthy/sleeper with a FI setup
03-11-2006, 09:32 AM
#6
thanks for the input. its just with a head and cam everything has to match and work together. thats the tough part. but for sure that would be bad *** to go h/c and then top it off f/i.. which is the better supercharger to go with for stock internals..vortech or procharger? whats the pros and cons of each?
03-11-2006, 11:49 AM
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Originally Posted by 2000 Tran Zam
heads/cam will be cheaper for the most part.
if you go supercharger, expect around mid-upper 400's rwhp with like 9 lbs(which I wouldnt run more then that).
This woudl include all bolt ons and supportive mods.
I would suggest though at least switching to 6.0 heads. It will lower compression and make it safer for you to get in the upper 400's.
if its stock internals, and you dont change out the heads, you prob dont wanna run more then 6 lbs or so, and should net you 400-430 or so rwhp.
if you go supercharger, expect around mid-upper 400's rwhp with like 9 lbs(which I wouldnt run more then that).
This woudl include all bolt ons and supportive mods.
I would suggest though at least switching to 6.0 heads. It will lower compression and make it safer for you to get in the upper 400's.
if its stock internals, and you dont change out the heads, you prob dont wanna run more then 6 lbs or so, and should net you 400-430 or so rwhp.
As for H/C ....the power gets moved up in the Upper Rpm range were of FI, you can have power in almost any RPm..
As for a H/C car beating a FI with the same HP.. You want to explain that.. HOw N/A cars have advantage to FI
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03-11-2006, 12:22 PM
#8
Well the thing is if you're going to try to make power with H\C it's going to push you to run smaller combustion chambers and a more lopey cam...These are BAD for FI...If you're going to start out with a H\C and you know that you want to go FI make sure that it will work with the FI down the road...There's nothing worse then having to do something twice...
03-11-2006, 12:48 PM
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H/C wouldnt work with FI.. just because.. h/c run higher compression ratio.. which is not something you want with FI.. you'd want low compression ratio..You'd have to swap heads if you went with FI. Basically it all comes down to want you want...
03-11-2006, 01:03 PM
#10
Originally Posted by Sierra5.3
H/C wouldnt work with FI.. just because.. h/c run higher compression ratio.. which is not something you want with FI.. you'd want low compression ratio..You'd have to swap heads if you went with FI. Basically it all comes down to want you want...
!!
03-11-2006, 01:11 PM
#11
Originally Posted by ChaseSS
given that 430rwhp H/C would beat a 430rwhp FI car just because the naturally aspirated has its advantages, however you can be much more stealthy/sleeper with a FI setup
i agree with you. check out my post i just added about the NA power/weight ratio vs FI power to weight ratio
03-11-2006, 01:17 PM
#13
Originally Posted by TXZ28LS1
which supercharger would be better suited for street racing ..the vortech or procharger?
03-11-2006, 01:52 PM
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I have been giving thought to going F/I as well, but would still like a Cam, and to work the heads a bit. What would be a good Cam to install that would be Tutbo or Blower friendly? I just love the sound of a nice cam, and the sound of a BOV when going through the gears.
Has anyone have thoughts of the STS? What are your views?
Has anyone have thoughts of the STS? What are your views?
03-11-2006, 06:52 PM
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ABout the heads.. I was stating that its better to run lower compression with FI.. rather than limiting yourself with the stock heads.. even tho it can be done
For the cam...ith a turbo you want an lsa about 115..
For the cam...ith a turbo you want an lsa about 115..
03-11-2006, 09:29 PM
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The 6.0 heads will only lower your compression.. I dont know how they flow compared to the stock 5.7 heads....
As for the cam, you dont want alot of overlap.. you'll have a little but you dont want so much as all the boost coming in.. goes out the exhaust
As for the cam, you dont want alot of overlap.. you'll have a little but you dont want so much as all the boost coming in.. goes out the exhaust
