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Re: 750 carbs on 700hp motors
[Re: B3422W5]
#1501021
09/14/13 12:31 PM
09/14/13 12:31 PM
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Joined: Jan 2003
Posts: 9,876
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,876
Weddington, N.C.
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I agree, part of that is the cam being in early to trap more cylinder pressure. That is one of the best lobes UD/Bullet has, asymmetrical with an agressive opening and slower closing ramp, 183 @ .200 lift. With more cr I would agree the combo wouldn't want or need as much stall, I think the soft 60' is the trade-off of the cr/head flow mismatch but you sure cant argue with the awesome results all thing considered  John calverts super stock mustang is a very highly scienced-out race car, not really an apples to apples regarding the very tricked out induction system, camshaft and exhaust, the hp and performance are the result of years and years of tweaking that car/class/combo and chassis going back to the early 70's, and with a few allowances (to enhance ET's for increasing class parity over the decades) along the way. It is an awesome car to behold. In this day of back halved purpose built FWD conversion cars being legal in SS it's amazing the 40+ yr old cars can still compete at all, but I'm really glad they still can 
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Re: 750 carbs on 700hp motors
[Re: mopar dave]
#1501023
09/14/13 02:57 PM
09/14/13 02:57 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
408 small block. 60 is a consistant 1.51.
do you have a 700hp Small Block? what's the et and mph? whoops et and mph were in the Op... Yeah I'd think at that et you'd be in the low 1.40's. still good numbers.
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Re: 750 carbs on 700hp motors
[Re: mopar dave]
#1501026
09/14/13 06:36 PM
09/14/13 06:36 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
yeah,but its about 5 yrs old now. not quite up to date. jesse a good carb man and he suggested his 950 stage 5+ which is a 850. plugs show it could use alittle more timing reading the ground strap. the color change is just about to the bend,so maybe a degree or 2? i'm at 36* now. 38* sounds like too much for a 11.3:1 408 on pump gas though?
ummm ground strap is plug heat range
http://www.youtube.com/watch?v=fiMM2S0aADM
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Re: 750 carbs on 700hp motors
[Re: mopar dave]
#1501029
09/14/13 07:41 PM
09/14/13 07:41 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
yes,i watched that video last week and read on ngk site heat range was read on ground strap. so I called ngk and talked to one of their techs and he tells me timing is read off the ground strap. so,go figure.
ok so who you trust Larry Meaux one of the best head porters engine guru's or the NGK tech that probably has never raced or messed with a car. 
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Re: 750 carbs on 700hp motors
[Re: Thumperdart]
#1501031
09/14/13 07:59 PM
09/14/13 07:59 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
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Quote:
Quote:
yes,i watched that video last week and read on ngk site heat range was read on ground strap. so I called ngk and talked to one of their techs and he tells me timing is read off the ground strap. so,go figure.
Exactly..........too many opinions on this according 2 who you talk 2............. 
true but can you explain how timing can affect the strap?
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Re: 750 carbs on 700hp motors
[Re: mopar dave]
#1501033
09/14/13 08:21 PM
09/14/13 08:21 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
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Quote:
I hear it both ways all the time,but lately more an indicator of timing. I was under the impression the more timing the more heat.
timing doesn't control the spark, just when it happens.
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Re: 750 carbs on 700hp motors
[Re: Quicktree]
#1501034
09/14/13 08:25 PM
09/14/13 08:25 PM
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Joined: Mar 2009
Posts: 814
in front of the computer
80arrow
super stock
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super stock
Joined: Mar 2009
Posts: 814
in front of the computer
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Quote:
Quote:
Quote:
yes,i watched that video last week and read on ngk site heat range was read on ground strap. so I called ngk and talked to one of their techs and he tells me timing is read off the ground strap. so,go figure.
Exactly..........too many opinions on this according 2 who you talk 2.............
true but can you explain how timing can affect the strap?
I can't explain how it does but when I advance the timing in my car it moves the discoloration on the strap further towards the end of the strap. Some of the guys I talk to with forced induction say that you want the discoloration at the bend of the strap. Might be two different things but that's what happened with my car
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Re: 750 carbs on 700hp motors
[Re: 80arrow]
#1501035
09/14/13 08:27 PM
09/14/13 08:27 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Quote:
Quote:
yes,i watched that video last week and read on ngk site heat range was read on ground strap. so I called ngk and talked to one of their techs and he tells me timing is read off the ground strap. so,go figure.
Exactly..........too many opinions on this according 2 who you talk 2.............
true but can you explain how timing can affect the strap?
I can't explain how it does but when I advance the timing in my car it moves the discoloration on the strap further towards the end of the strap. Some of the guys I talk to with forced induction say that you want the discoloration at the bend of the strap. Might be two different things but that's what happened with my car
yea boost is a whole different story.
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Re: 750 carbs on 700hp motors
[Re: mopar dave]
#1501039
09/14/13 10:01 PM
09/14/13 10:01 PM
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Joined: Jan 2003
Posts: 4,002
Joplin, Mo
rt66jim
master
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master
Joined: Jan 2003
Posts: 4,002
Joplin, Mo
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Quote:
i'll have to contact a carb shop to see what it takes in a smaller carb. jesse bigs setup my 950 and I thought it was working quite well in my 408 with 11.4 comp, indy heads and intake,260/269-700 lift cam, 1 7/8 headers, 5500 8" stall, 727, 4.10, 28" tire. 67 cuda weights 3300 with me and my 60 is a 1.51. best [Email]10.39@131[/Email]
Dave my 416 Dart @ 3200 lbs w/4.56 & 29" tires w/caltrks. Ran a best 60' of 1.47. Usually 1.48-1.50 @ 125mph. I had ported W2's and the cam was 265@.050 590 lift installed @108. TA 4400 converter hat flashes 5400. Carb is a stock PF 950HP. Your running about where I would expect with that combo. JMO
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