How much NOS?

QuantumMotorsports · 07-09-2003, 03:20 PM

Hey guys,

I've got a 76 302 block with 76 rods, an 87 crank, and TRW L2482F30 forged pistons. It's bored .030 over and has new rings, bearings, it's been balanced, all the shiz. I've got a comp cams 292H which has about a .530 lift. I've also got a 670cfm carb with a Weiand stealth intake. How much nitrous do you think this bad boy could handle? The car is stripped out and it's probably rarely going to see street use. Since I'm running a carb, will I need a wet nitrous setup or dry? Tell me what I should do guys. Here's the engine about halfway through being built, just for grins.

fiveohpatrol · 07-09-2003, 04:50 PM

Since those seem to be stock replacement pistons, I wouldn't put any more than a 150shot of nitrous on it.

oh yeah, and here we call it nitrous, not NOS

Shaggy · 07-09-2003, 06:55 PM

I wouldn't go any further then 150 at first the pistons will take more but with the dual plane intake you are asking for trouble spraying more then about 150 without VERY closely watching your mixtures. if you had a single plane or that intake distributes the 150 shot VERY well then i would go no more then a 200 on that intake and 250 at the very most on a single plane the 250 will be severely sstressing the whole motor... assuming you are making 300 plus 250 put you at 550... more then enough to split a stock block and so on down the line. The HP level i am talking about is actual HP gained not HP rating by the manufacturer.

07-09-2003, 03:20 PM	#1
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	How much NOS? Hey guys, I've got a 76 302 block with 76 rods, an 87 crank, and TRW L2482F30 forged pistons. It's bored .030 over and has new rings, bearings, it's been balanced, all the shiz. I've got a comp cams 292H which has about a .530 lift. I've also got a 670cfm carb with a Weiand stealth intake. How much nitrous do you think this bad boy could handle? The car is stripped out and it's probably rarely going to see street use. Since I'm running a carb, will I need a wet nitrous setup or dry? Tell me what I should do guys. Here's the engine about halfway through being built, just for grins. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

07-09-2003, 04:50 PM	#2
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	Since those seem to be stock replacement pistons, I wouldn't put any more than a 150shot of nitrous on it. oh yeah, and here we call it nitrous, not NOS __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

07-09-2003, 06:55 PM	#3
Shaggy Registered Member Join Date: Feb 1999 Location: Houston,TX Posts: 466	I wouldn't go any further then 150 at first the pistons will take more but with the dual plane intake you are asking for trouble spraying more then about 150 without VERY closely watching your mixtures. if you had a single plane or that intake distributes the 150 shot VERY well then i would go no more then a 200 on that intake and 250 at the very most on a single plane the 250 will be severely sstressing the whole motor... assuming you are making 300 plus 250 put you at 550... more then enough to split a stock block and so on down the line. The HP level i am talking about is actual HP gained not HP rating by the manufacturer. __________________ A good plan, violently executed now, is better than a perfect plan next week. George S. Patton, General (1885-1945)