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Old 10-29-2003, 05:47 PM
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350 good for racing

I'm building a 71 nova prostreet car 350 bored 0.30 over dome piston's 11.9to1 compression with aftermarket botieheads 2.02 1.60 valves triple spring's roller rockers 1.5 radio .Hbeam 5.7 Eagle rod's .And crank 4340 forged steel .with Team G intake with 2'' rise. 750 holly double pumper. What cam would go good with my combo. With 150 shot of NOS. powerguild tranny 4,500 stall. 9" Ford rearend 4.88 gears . what kind of power would i have and what would a good 1/8 mile run look like. 70custom/10.

Has any one ever used a 350 for racing.

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Last edited by 70custom/10; 10-29-2003 at 05:47 PM.
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Old 10-29-2003, 06:12 PM
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If it was me I'd get a roller cam, but if your heads don't have roller springs a flat tappet cam will do OK. I am building a 350 0.030 over (355ci) ported and flowed 492 heads with 2.02's TRW pistons 12.8:1@61.5cc Victor JR intake, 750 holley it sounds very simmilar to what you are building. I was going to use a solid tappet cam in my Chevelle and I called CraneCams and they didn't really have what I needed for my car so they custom ground me a cam. I have a brand new Crane cam and lifters on the shelf that havn't even been in the motor, I decided to go roller and have no use for these expensive parts. Hell if you are puttin it in a Nova they are great cars for going fast cheap, with your setup in the 1/8th I bet it would go 7.50's or lower without Nitrous and with you will be close to 7 flat probably more like 7.20 but still that's a pretty fast street car!

The specs on the cam I have are:
Lift: intake-.561 exh-.582
Duration @50 intake- 258 exh- 268
106 deg lobe seperation. This is a very radical cam for being a flat tappet style. I need to sell this stuff off sometime.
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Old 10-29-2003, 09:33 PM
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Re: 350 good for racing

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Has any one ever used a 350 for racing. [/B]
I would sure hope so!
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Old 10-30-2003, 10:57 AM
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How about this cam for my combo Crane soild roller 670/625 lift 290/306 duration .Or the same cam but 630/630 lift 292/302 duration.
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Old 10-30-2003, 12:40 PM
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looked at comp's nitrous cams? where in bama are ya? maybe we can hook em up at a track somewhere. sounds like would be a close race. i think you should get a high 6 with the spray. you can call the cam makers or email them with what you have and they will tell you what to get. i am in huntsville btw run at huntsville and bailyton.
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Old 10-30-2003, 04:23 PM
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Cool, I'm glad you are choosing the roller setup. With a roller cam and nitrous I too think it would get into high 6's. I have ran roller motors and flat tappet motors and they are like night and day to me, the roller motors rap and rev so much faster and I really like when you pull the dipstick and you can hardly see the oil after running the hell out of it, they run so clean because there is hardly any metal to metal contact. You can use a pretty big cam in a light car like you have because they need less torque to take off. The first cam you mentioned IMO is way to big, the 630 lift is still pretty big but it would probably work nicely.
I know a guy who has a 13:1 406 and he had a 690 lift with like 290 duration.. a big cam, this car ran great but it had no low-end power it was all up top and it was almost a worthless cam unless you want to turn 7000 to have fun with the car, he switched to a smaller 636 lift and the engine came alive. Bigger is not always better. It actually took me a month to choose my cam for my motor, call the cam companys like Comp, Crane, Isky, Lunati and tell them your engine specs and they give you a part #, they are very helpful.
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Old 10-30-2003, 08:35 PM
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How does my set look like in power wise . You know Horse's and torque.

I would say 500 to 550 . What do you say.

Last edited by 70custom/10; 10-30-2003 at 08:35 PM.
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Old 10-31-2003, 10:25 AM
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Yes roller everything will get you 500 easy.. probably close to 550. It will be very hard to get into 6's even with Nitrous. I know a guy with a '66 Nova full race car super light weight with a 13:1 350 alcohol motor with the best of parts and it only goes 7.10
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Old 10-31-2003, 01:29 PM
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I don't see a problem hitting 6's with that setup... especially if the car has been lightened any at all. My car (84 Z28) is still at factory 3500lbs, bone stock suspension, no sub-frame connectors, etc.... has a 10.25:1 355, moderately worked 186 double hump heads, Team-G intake, 700 holley, very tight 3000 stall, .512/.533 (w/ 1.6 rollers) solid lifter cam, 3.73 gears, and 200 n2o---and runs 6.85-7.00 (depending on the mood it's in). Even before the stall, with a dual-plane intake, crappy exhaust, 3.23 gears, and a 175 shot--it would bump out consistent 7.20's (which tickled me to death... then when I broke into the 6's... you couldn't have beat the grin off of my face with a 2x4 -- since I drove it to the track, put slicks on, ran the car, changed tires back and drove it home ). My car is still very much streetable...especially in summertime... toss the t-tops out and go... and gets @5000 miles a year on it.

It sounds like you are building more of a motor and putting it in less of a car (weight wise)... so I don't see a problem with you breaking into the 6's. If you can, go ahead and bump the oxide up to 200 ...and, if I could have afforded them, I would have gone full roller w/ the cam & lifters.

By the way, bottom end in my car is stock cast crank, stock 5.7 rods, and TRW forged flats w/valve reliefs.

good luck... sounds like a potential monster
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Old 10-31-2003, 04:10 PM
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I guess it could be possible with a Nova. I know one guy with a 434 SBC 14.5:1 roller motor, in a 67 Pro Street Chevelle.. A heavy car, this car is stupid fast, he let me drive it this summer and it scared the hell out of me when it started going sideways at 70 trying to grab traction, we were on a country road at the time. He told me it makes a little over 700hp with no Nitrous. In the 1/8th it ran 6.95 no nitrous and his best with 100 shot was 6.62 that's all with ET street tires stock car. But if that motor was in a car like a Nova it would probably do low 6's. Nitrous can make you fast pretty easy, like I have seen a 66 Chevy II run 5.60's with a 360 SBC?? I went and asked and he told what was in the motor and then said I'm hittin it with 300 nitrous..
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Old 10-31-2003, 06:52 PM
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around here as soon as you hit 6.99 or faster a roll cage becomes manditory. i think you had better start looking for one.
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Old 10-31-2003, 07:08 PM
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I was a welder for years so yes it has a roll cage 6 point. Tubed out all the way . What do you guy's think . I thing go for 650 to700 pony's . I love to have fast times and people asking how i did . At one time around here is was building motor's for all the hot street car's they loved the power. some guy's was puttins 5,000$ in a street car. Hell didn't bother me i was getting my $$$Money$$$.70Custom/10
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