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#1
04-18-2008, 09:19 PM
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so how is a 650 holley spreadbore?
I'm gonna be sending out my q-jet to be redone,probably by cliff,but I want a cheap replacement that is easy to tune.Is the holly 650 a good one?how is it performance wise compared to a q-jet,close?any info would help,thanks
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#2
04-18-2008, 09:26 PM
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I have one and it did the job when I ran it. Right out of the box.
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 frittering and wasting the hours in an off hand way.... 1969 GTO, 455ci, 230/236 Pontiac Dude's "Butcher Special" Comp hyd roller cam with Crower HIPPO solid roller lifters, Q-jet, Edelbrock P4B-QJ, Doug's headers, ported 6X-8 (97cc) heads, TKO600, 3.73 geared Eaton Tru-Trac 8.5", hydroboost, rear disc brakes......and my greatest mechanical feat....a new heater core. 
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#3
04-18-2008, 09:48 PM
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i had an old junker, that with a rebuild kit and a little tuning, treated me right. ran mid 13's on a 400 back in '86 with it.
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69 GTO 11:66@114.17 all balls no bottle 406 d-port iron heads 3700lbs all steel |
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#4
04-18-2008, 10:25 PM
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Still having lots of great driving fun with my 4175 vac sec. Been on the car since about 1993 (I have rebuilt it once) and still runs great. I am rebuilding a 4165 DP now to go with a planned 3.42 gear swap and will be seeing how much more gas I can use up!
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1977 TA 400 9.5:1 CR 351hp 414LbFt, #13 Heads + 1.52 Roller rockers, 1968 Pontiac 400 intake, Holley 4165 650 DP #7054 Howards Hyd .447/.467 IN:288 EX:298 214/224@.050, MSD6A + MSD timing control + H2o/Meth 1-5/8" headers, Magnaflow 200CPI Cats + 2.5" Pypes X, Dynomax STs, TH-700R4 2200 stall, 3.42 Eaton 10-bolt, PS/PB/PW/PL/AC/Cruise 13.84@100.14mph 2.18 60' on P255-60-R15 radials, pump gas, mpg : 21.5 hwy 15.2 city 
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#5
04-19-2008, 01:10 AM
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I used one for years and it gave me no problems what so ever. I richened up the jetting and it was one of the best performing carbs that I have used. I took it off when I sold the engine. Buyer didnt want it. This was the Double pumper version. I hear that the vacuum ones suck.
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