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  #16 (permalink)  
Old 12-31-2012, 09:08 AM
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Quote:
Originally Posted by cobalt327 View Post
If you just mat the gas from a stand still or at lower rpm, it may bog because of the gears.

But if the bog is there when the carb transitions into the secondaries- even w/the engine up into the powerband- then there's a problem or problems that need to be addressed.

The carb size needs to be verified, too.
Sheet reads:
XC
Main Body desc. 780

Then gives parts specs. Then reads:

Static Draw Test
200 553 195
250 651 228
300 726 283

Don't know if that helps, but im sure it's a 780 cfm. I would post the whole tech sheet but I can't post pics from my iPhone on here tht I know of.

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Old 12-31-2012, 10:40 AM
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With the combo that you have I am fairly sure that you have the correct carb now..Tuning that carb to get the bog out can be done for sure..just takes a bit of noodling to get it adjusted correctly so when you hit the gas you no longer have that soft spot. I still think the secondaries are opening just a wee bit too soon giving you that what you say is a bog..I would for sure look into the tuning before throwing a bunch of $$$$$$$$$$ at it..

Sam
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Old 12-31-2012, 01:10 PM
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Originally Posted by OneMoreTime View Post
With the combo that you have I am fairly sure that you have the correct carb now..Tuning that carb to get the bog out can be done for sure..just takes a bit of noodling to get it adjusted correctly so when you hit the gas you no longer have that soft spot. I still think the secondaries are opening just a wee bit too soon giving you that what you say is a bog..I would for sure look into the tuning before throwing a bunch of $$$$$$$$$$ at it..

Sam
I've only got about 150 miles on this engine so far. It runs good, and I do plan on a gear swap soon. But for now, it's what I've got. I'm sure Patrick set the carb up right, and I did submit a much lower gear to him to build it. I'll call him after they get back from the holiday and see what he recommends. In the mean Time, I plan on messing with the timing, and curve to help out some. I don't want to put money into tuning that Edelbrock 600, since I'm not going to be using it anyway. Just a waste of $$! I can live with that slight soft spot to put some break in miles on it. Thanks for all the input. I just mainly wanted to know if I would mess anything up by running it as is.
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Old 12-31-2012, 01:48 PM
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I cannot see how it will hurt anything to run it as it is..I would say that you may be gettign the bog in part throttle operation and if you were to get on it hard the bog may not be there at full throttle..carbed engines will act like that sometimes..

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Old 12-31-2012, 04:07 PM
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Thanks everyone for the input. I still can't believe I went from a frame up resto mod 70 Chevelle with carbed LS1 conversion with muncie 21 and built 12 bolt 4.10:1 and moroso posi unit that burned up in a wild fire, to a stock 80K miles restored 70 Malibu sport coupe that I bought the crate engine for, and ended up having 2.56:1 peg leg 10 bolt!!!
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