LS1 into kit car- carb sizing query?
Originally Posted by holley505
Vcious04 you make a good point, but
the base Kit works... and it comes with the manifold so you get a little savings... if you don't have the LAPTOP or SAVY to program it ? It could be a pain in the A$$ not to mention costs a little bit more.
Of course they have a hand held programmer also...
MO MONEY .... MO MONEY ....
the base Kit works... and it comes with the manifold so you get a little savings... if you don't have the LAPTOP or SAVY to program it ? It could be a pain in the A$$ not to mention costs a little bit more.
Of course they have a hand held programmer also...
MO MONEY .... MO MONEY ....
Victor Jr intake ($279)
MSD-6010 ($303)
total ($582)
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I didnt realise there was a programmable version msd available, i'd only seen the one with the timing plugs that change the ign map.
I had thought that the plug verison would suffice, bearing in mind no major plans to go to 500+bhp etc. the only thing i might do in a couple of years is a cam swap retaining stock heads for a little more uuumph. i'd thought that the msd would have a near as dammit ign map to be honest for stock and stock+cam step 1?
i do have a laptop, and will look at the other programmable msd kit today, does that also come plug n play into the stock look though?
cheers
I had thought that the plug verison would suffice, bearing in mind no major plans to go to 500+bhp etc. the only thing i might do in a couple of years is a cam swap retaining stock heads for a little more uuumph. i'd thought that the msd would have a near as dammit ign map to be honest for stock and stock+cam step 1?
i do have a laptop, and will look at the other programmable msd kit today, does that also come plug n play into the stock look though?
cheers
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Also just realised i had another question re; the edelbrock /msd inlet conversion. i've seen a website detailing a imilar swap with a GM manifold
http://www.chevyhiperformance.com/te...ower_increase/
and in that set of pictures it shows the o.e valley cover being removed and replaced by a different version.
question is to those who have fitted the edelbrock manifold; does the conversion require a similar replacement cover fitting, if so what type etc or is it in the kit?
cheers again!
http://www.chevyhiperformance.com/te...ower_increase/
and in that set of pictures it shows the o.e valley cover being removed and replaced by a different version.
question is to those who have fitted the edelbrock manifold; does the conversion require a similar replacement cover fitting, if so what type etc or is it in the kit?
cheers again!
Originally Posted by chris-m
Also just realised i had another question re; the edelbrock /msd inlet conversion. i've seen a website detailing a imilar swap with a GM manifold
http://www.chevyhiperformance.com/te...ower_increase/
and in that set of pictures it shows the o.e valley cover being removed and replaced by a different version.
question is to those who have fitted the edelbrock manifold; does the conversion require a similar replacement cover fitting, if so what type etc or is it in the kit?
cheers again!
http://www.chevyhiperformance.com/te...ower_increase/
and in that set of pictures it shows the o.e valley cover being removed and replaced by a different version.
question is to those who have fitted the edelbrock manifold; does the conversion require a similar replacement cover fitting, if so what type etc or is it in the kit?
cheers again!
the sheetmetal cover is nice, i like how its got a stand for the breather. not sure it will work with the edelbrock dual plane RPM, but it will work with the VIC JR or the GM manifold.
if you need one anyway, its only 75 bucks w/filter, i think a new stock one from GM is almost that.
good luck.
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Originally Posted by helmet10
holley 505 where did you get those headers?
i have mine on ebay right now if you are interested.
http://cgi.ebay.com/ebaymotors/ws/eB...m=170041952730
Holley HP either 750 or 950.
Edlebrocks are for street cruisers, vacuum secondarys are also.
And people that tell you that they are too big....the carb only adds the amount of gas as the amount of air is sucked it. So you can put a 2000 cfm carb on it and its only going to add the fuel to the small amount of air going in...yet has the capability of adding more if higher RPMs are reached.
I have a 377 (SBC) that was in my car prior and with a holley HP 950 worked perfect. It was an 11 sec combo w/ crappy 3.50 gears.
Edlebrocks are for street cruisers, vacuum secondarys are also.
And people that tell you that they are too big....the carb only adds the amount of gas as the amount of air is sucked it. So you can put a 2000 cfm carb on it and its only going to add the fuel to the small amount of air going in...yet has the capability of adding more if higher RPMs are reached.
I have a 377 (SBC) that was in my car prior and with a holley HP 950 worked perfect. It was an 11 sec combo w/ crappy 3.50 gears.
Originally Posted by pwrtrip75
Holley HP either 750 or 950.
Edlebrocks are for street cruisers, vacuum secondarys are also.
And people that tell you that they are too big....the carb only adds the amount of gas as the amount of air is sucked it. So you can put a 2000 cfm carb on it and its only going to add the fuel to the small amount of air going in...yet has the capability of adding more if higher RPMs are reached.
I have a 377 (SBC) that was in my car prior and with a holley HP 950 worked perfect. It was an 11 sec combo w/ crappy 3.50 gears.
Edlebrocks are for street cruisers, vacuum secondarys are also.
And people that tell you that they are too big....the carb only adds the amount of gas as the amount of air is sucked it. So you can put a 2000 cfm carb on it and its only going to add the fuel to the small amount of air going in...yet has the capability of adding more if higher RPMs are reached.
I have a 377 (SBC) that was in my car prior and with a holley HP 950 worked perfect. It was an 11 sec combo w/ crappy 3.50 gears.
if you put a 950 on top of a stock cube ls1, its gonna feel sluggish driving wise, and if its roadraced, it prolly wont be responsive as a 750.
sure the 950 is gonna give you a few more peak power, but unless its something all out race, the 750 is more than adequate.
annular boosters help out large carbs a ton for what its worth, if you are worried about a sluggish feeling in part throttle conditions.
No way would I put a 950 on a 5.7 or 6.0 LS1 thats BS. What you are gonna do is flood the hell out of it like TJ was understatedly referring to. And Double pumpers don't wait for the air to pull them open. A vacuum secondary is still going to be flooding everywhere. A 950 will have you changing plugs every evening. IMO your 377 would have probably been faster with a properly sized carb.
750 tops man..... heres a calculator that will help.
http://chevynova.ca/73nova/enginecalculator.html
750 tops man..... heres a calculator that will help.
http://chevynova.ca/73nova/enginecalculator.html
Last edited by The stunningman; Oct 28, 2006 at 05:57 PM.
Originally Posted by The stunningman
No way would I put a 950 on a 5.7 or 6.0 LS1 thats BS. What you are gonna do is flood the hell out of it like TJ was understatedly referring to. And Double pumpers don't wait for the air to pull them open. A vacuum secondary is still going to be flooding everywhere. A 950 will have you changing plugs every evening. IMO your 377 would have probably been faster with a properly sized carb.
750 tops man..... heres a calculator that will help.
http://chevynova.ca/73nova/enginecalculator.html
750 tops man..... heres a calculator that will help.
http://chevynova.ca/73nova/enginecalculator.html
with the proper jetting, the carb is only going to "suck" in the fuel thats needed.
its all metered, so tuned properly you can put a 1150 dominator on a honda 4 cly if you wanted to, just lower rpms part throttle are going to be horrible because there will be no draw from the large venturi. a smaller hole is great for response, and the annular boosters would help greatly on a carb "too big" for the application.
Still why bother jetting around a wrong sized carb? doesn't make sense to me. The venturi openings,butterflies, jets,shooters ....every part is tailored in a carb. Why buy a 950 and then re-adjust $$ everything?
Just because it can be done doesn't mean you should.
Just because it can be done doesn't mean you should.
Originally Posted by TJ
with factory jetting in it, yes. it will run **** poor.
with the proper jetting, the carb is only going to "suck" in the fuel thats needed.
its all metered, so tuned properly you can put a 1150 dominator on a honda 4 cly if you wanted to, just lower rpms part throttle are going to be horrible because there will be no draw from the large venturi. a smaller hole is great for response, and the annular boosters would help greatly on a carb "too big" for the application.
with the proper jetting, the carb is only going to "suck" in the fuel thats needed.
its all metered, so tuned properly you can put a 1150 dominator on a honda 4 cly if you wanted to, just lower rpms part throttle are going to be horrible because there will be no draw from the large venturi. a smaller hole is great for response, and the annular boosters would help greatly on a carb "too big" for the application.
right on. The Holley HP is perfect. Tune it and it will be perfect. If you want something to simply throw on and not tune get an edelbrock. You want power and performance get a holley and learn to tune it.
Yea i would suggest the holley HP 750 for more of a street car and the Holley HP 830 for more of a drag car. I am looking at going to either the HP 830 or a mighty demon 850 for next season.
Originally Posted by The stunningman
Still why bother jetting around a wrong sized carb? doesn't make sense to me. The venturi openings,butterflies, jets,shooters ....every part is tailored in a carb. Why buy a 950 and then re-adjust $$ everything?
Just because it can be done doesn't mean you should.
Just because it can be done doesn't mean you should.
but in a situation where you know you are going larger, bigger head, cam, stroker down the road, its cheaper to buy the carb that will work down the road.
10-20 bucks in jets and squirters is cheaper than a 4-500 dollar carb.
i understand where you are comming from. no arguement.
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cheers again. recent advice i've also had from a guy who maintains /races carbd v8 engined lolas (originals!) has been to go 750cfm on a stock ls1, with vacuum secondarys due to the lightweight of the kit car its going into, and track/sprint use, with some low geared /low speed corners and delicate throttle balance etc.
