help tuning a hp950

GradeA_TireFryer · 05-28-2007, 11:46 AM

anyone have experience tuning a holley hp 950? 454 big block - trying to get this divably for the street and want to get it to the track in about a week. runs pretty good after warm up - it hesitates on first take off, but then screams - spark plugs are dark - i think running a little ruch - anyone have any suggestions?

Drace1963 · 06-02-2007, 07:51 PM

Lean it out alittle. Square your jetting if you do not have a power valve in it.

**Sneakin Deacon** · 06-02-2007, 11:54 PM

check your timing. and maybe experiment with different cams for your accel pump.

Suicidal Racing · 06-04-2007, 02:35 PM

does it hesitate on wide open throttle or part throttle?

there are a couple things that my cause this like other are saying.

u could start off by resetting everything on the carb and the retune the carb..

go to Get SOME Racing - Powered by vBulletin

i got carb tuning 101 and shit like that on there that will help u out.

05-28-2007, 11:46 AM	#1 (permalink)
GradeA_TireFryer All American, rice eater! Car: 70 chevelle, 03 f150, My TRGarage : 61986346	help tuning a hp950 anyone have experience tuning a holley hp 950? 454 big block - trying to get this divably for the street and want to get it to the track in about a week. runs pretty good after warm up - it hesitates on first take off, but then screams - spark plugs are dark - i think running a little ruch - anyone have any suggestions?

06-02-2007, 07:51 PM	#2 (permalink)
Drace1963 Member Car: 63 Chevy 2 nova, 68 El Camino My TRGarage St. Petersburg, Florida : 105887311	Lean it out alittle. Square your jetting if you do not have a power valve in it.

06-02-2007, 11:54 PM	#3 (permalink)
Sneakin Deacon PSSHHH x2 Car: ????? My TRGarage The Burg : 195054630	check your timing. and maybe experiment with different cams for your accel pump.

06-04-2007, 02:35 PM	#4 (permalink)
Suicidal Racing Has V.I.P in HELL! Car: 78 malibu My TRGarage dirty water : 1738382160	does it hesitate on wide open throttle or part throttle? there are a couple things that my cause this like other are saying. u could start off by resetting everything on the carb and the retune the carb.. go to Get SOME Racing - Powered by vBulletin i got carb tuning 101 and shit like that on there that will help u out.