11-18-2002, 12:19 PM
|
 |
CC Member
|
|
|
Join Date: Aug 2000
Location: Germantown, TN,
Cobra Make, Engine: Superformance #770, Stroked 351W (393 cubes) w/ Tremec TKO-600, 3.27 Torsen locker, 'Hi-Tech' Blue w/ White Stripes, Wilwoods, Bilstein coil overs...and a big ear-to-ear grin!
Posts: 1,147
|
|
Not Ranked
Mr. Fixit's right....
Most probably your 750 just needs some tuning. You didn't mention which 750 you have, but I just swapped a Holley 4160 series 750 DP for a 4150 series 750 -HP. The difference in the 4160 and 4150 is the 4160's do not have replaceable secondary jets - they have a metering block. 4150's are more like the original everything's adjustable Holley's, and are really more to my liking.
My 4160 had vacuum secondaries, electric choke, and non-replaceable secondary jets. My new 4150 has mechanical secondaries, no choke and fully replaceable jets, power valve, accelerator pump, squirters, etc. etc. The difference is the 4160 is about $260, while the 4150 is $600....big difference, indeed, but the 4150 is bar far the better carb.
Used to run too rich with the 4160, but since I couldn't make adjustments I had to live with the fumes. WIth the 4150 series, I'm running #70 primaries, and #72 secondary jets. The 'fumes' you mentioned are all but gone...and the car really comes on like gangbusters! Everyone said my gas mileage would go to hell with the mechanical secondaries, but I figured what the hell, this ain't no Corolla and I really don't give a flyin' flip about gas mileage in a Cobra...who does? So far, I've been very pleased with the changeover and wonder why more folks don't just go to the 750-HP right on the front end. Sure, it's more expensive, but if you're looking to not spend a lot of money, brother are YOU in the wrong hobby.
The Holley 750-HP seems perfect for my stroked 351... Tastes great, less filling....what more could I ask for?
__________________
Flyin_Freddie
"An opinion on everything...an expert at nothin'!"
WARNING: The opinions expressed herein do not necessarily represent those of the management, editors, or owners. We welcome differing opinions, and recognize our responsibility to offer differing views. May cause drowsiness, restlessness, or irritability. Do not operate heavy machinery while using this product. Void in Alaska, Hawaii, and Puerto Rico, or where prohibited, licensed, or regulated by law. We reserve the right to limit quantities. Offer good while supplies last. No substitutions allowed. Please observe posted speed limits. Professional driver on closed course. Do not try this at home. Please wear your seatbelt at all times. Close cover before striking. Use at own risk. Please dispose of properly. Drink responsibly. Prolonged exposure to vapors has been shown to cause cancer in laboratory animals. Do not use this product of you are pregnant, or plan on becoming pregnant. Intentional misuse by deliberately concentrating and inhaling fumes can be dangerous. Always wear safety glasses. In case of eye contact, flush with water and seek immediate medical attention. For occasional use only as directed. Avoid prolonged skin contact. Discontinue use if rash develops. If symptoms persist for more than three days, seek professional medical attention. Hearing protection required beyond this point. Danger: Hot surfaces. Use as directed. Proceed at own risk. Caution: Filling may be hot. Please don't litter. Actual results may vary. It is a violation of Federal Law to use this product in a manner other than as intended. Do not use this product if you have an enlarged prostate, or have difficulty urinating.
|
Threaded Mode
