Hi,
I have a 2001 360 Magnum in a '72 Valiant 4-door sedan that I'm installing a Vortech V-1, S-Trim centrifugal blower on. This is new territory for me. Always wanted a blown car, but never had the chance, 'til now.
I'd love to hear about other setups and what problems and successes other board members have had with their own centrifugally-supercharged A-engines.
Please respond here, or write me an email at [email protected] I will write back, guaranteed.
Mine is a stock 360 Magnum short block (except for the Hughes cam), with pretty much stock heads, TTI headers and 2.5" exhaust, a Crosswind dual-plane intake, and a Carb Shop "blow-thru"-modified, Holley 750 double-pumper.
Cam specs: hydraulic roller; stock lifters; 214/218 degrees of duration @ .050"-lift; 114 degrees lobe separation.... .525"-lift at the valve with 1.6 rockers (stock Magnum ratio.) Crane aluminum roller-tipped, needle-bearing rockers activated by thick-walled, chromoly pushrods, with 120# on the seat and 300# open, springs.
Car weighs 3,340, and has a stock-ratio, early (2.45-low) 904, with a 2,500rpm (unblown) stall speed converter, a TransGo shift kit, and an 8.75" rear end with 3.55 gears and a new Auburn limited-slip.
True 9:1 compression ratio (I cc'd everything) with 185 pounds compression on 4 hits of the gauge.
It ran 13.35 @ 102 mph, unblown (with a 3310 Holley) thru early 340 exhaust manifolds, with an M-P 180-degree, water-heated intake, on 8"-wide T/A "D.O.T." B.F. Goodrich Drag Radials (1.91 60-foot) on a 95-degree day, thru the mufflers.
I am hoping for some low 12's with the blower, but have no idea what to expect, insofar as maximum boost is concerned.
I have a Snowperformance BoostCooler alky/water injector set to start spraying at 4 psi of boost, and an MSD BoostMaster retard set to reduce timing by 2 degrees for every pound of boost, with 93-octane gas.
I'll appreciate advice and information from ANYONE running a ProCharger, Paxton, or Vortech (or any other centrifugal blower), as to what mistakes I might be making, here.
Using a 160-degree thremostat. Half-inch dia. fuel line to a boost-riented regulator, with a 310-gal./hr. punp that pumps at 30 psi., with a by-pass syetm on the pump and another at the regulator.
Stock (composition) head gaskets, and stock, hypereutectic pistons will limit my boost to under 10 pounds, for sure.
I may be stupid, but I'm not crazy... LOL!
I don't have S/S springs, but I have spring clamps on the front section of the stock springs, an adjustable pinion snubber (half-inch air-gap) and an air bag on the right rear spring for pre-load. New KYB rear shocks. I also just installed some 90/10 front shocks. I don't really want to replace the torsion bars unless I have to, but this was a V8 car with A/C, and I've heard that they have the same torsion bars as a 340 car. So, maybe I should.... dunno. Front end rise is pretty good...
I look for my 60-foot times to pick up a bit with the blower. I'd like to keep this 3.55 gear if I can.... I have to drive it to the strip, (60 miles, one-way) so I can't really put a 4.56 in it like I'd like to...
Thanks much for any information and advice. Anyone want to hazard a guess as to how much boost this thing willl produce with max impeller velocity (50K rpm) at 6,000 engine rpm?
I'm guessing 8 pounds.... but that's JUST a guess.
Bill, in Conway, Arkansas
I have a 2001 360 Magnum in a '72 Valiant 4-door sedan that I'm installing a Vortech V-1, S-Trim centrifugal blower on. This is new territory for me. Always wanted a blown car, but never had the chance, 'til now.
I'd love to hear about other setups and what problems and successes other board members have had with their own centrifugally-supercharged A-engines.
Please respond here, or write me an email at [email protected] I will write back, guaranteed.
Mine is a stock 360 Magnum short block (except for the Hughes cam), with pretty much stock heads, TTI headers and 2.5" exhaust, a Crosswind dual-plane intake, and a Carb Shop "blow-thru"-modified, Holley 750 double-pumper.
Cam specs: hydraulic roller; stock lifters; 214/218 degrees of duration @ .050"-lift; 114 degrees lobe separation.... .525"-lift at the valve with 1.6 rockers (stock Magnum ratio.) Crane aluminum roller-tipped, needle-bearing rockers activated by thick-walled, chromoly pushrods, with 120# on the seat and 300# open, springs.
Car weighs 3,340, and has a stock-ratio, early (2.45-low) 904, with a 2,500rpm (unblown) stall speed converter, a TransGo shift kit, and an 8.75" rear end with 3.55 gears and a new Auburn limited-slip.
True 9:1 compression ratio (I cc'd everything) with 185 pounds compression on 4 hits of the gauge.
It ran 13.35 @ 102 mph, unblown (with a 3310 Holley) thru early 340 exhaust manifolds, with an M-P 180-degree, water-heated intake, on 8"-wide T/A "D.O.T." B.F. Goodrich Drag Radials (1.91 60-foot) on a 95-degree day, thru the mufflers.
I am hoping for some low 12's with the blower, but have no idea what to expect, insofar as maximum boost is concerned.
I have a Snowperformance BoostCooler alky/water injector set to start spraying at 4 psi of boost, and an MSD BoostMaster retard set to reduce timing by 2 degrees for every pound of boost, with 93-octane gas.
I'll appreciate advice and information from ANYONE running a ProCharger, Paxton, or Vortech (or any other centrifugal blower), as to what mistakes I might be making, here.
Using a 160-degree thremostat. Half-inch dia. fuel line to a boost-riented regulator, with a 310-gal./hr. punp that pumps at 30 psi., with a by-pass syetm on the pump and another at the regulator.
Stock (composition) head gaskets, and stock, hypereutectic pistons will limit my boost to under 10 pounds, for sure.
I may be stupid, but I'm not crazy... LOL!
I don't have S/S springs, but I have spring clamps on the front section of the stock springs, an adjustable pinion snubber (half-inch air-gap) and an air bag on the right rear spring for pre-load. New KYB rear shocks. I also just installed some 90/10 front shocks. I don't really want to replace the torsion bars unless I have to, but this was a V8 car with A/C, and I've heard that they have the same torsion bars as a 340 car. So, maybe I should.... dunno. Front end rise is pretty good...
I look for my 60-foot times to pick up a bit with the blower. I'd like to keep this 3.55 gear if I can.... I have to drive it to the strip, (60 miles, one-way) so I can't really put a 4.56 in it like I'd like to...
Thanks much for any information and advice. Anyone want to hazard a guess as to how much boost this thing willl produce with max impeller velocity (50K rpm) at 6,000 engine rpm?
I'm guessing 8 pounds.... but that's JUST a guess.
Bill, in Conway, Arkansas