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TR236/230 vs TR230/236

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Old Dec 20, 2005 | 08:46 PM
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Default TR236/230 vs TR230/236

So we have two splits here, one reverse and one standard. The specs are:

Thunder Racing Custom Camshaft - 236/230 .602/.575 112 LSA 2400-6800 RPM Power Band. Excellent mid-range & high RPM power. 3800+ stall, 4.10+ gear, computer tuning required. Due to the fast ramp rate of this camshaft, the use of 1.8 rockers is not recommended.

Thunder Racing Custom Camshaft - 230/236 .590/.598 112 LSA 2400-6800 RPM Power Band. Excellent mid-range & high RPM power. 3200+ stall, 3.42+ gear, computer tuning required. Due to the fast ramp rate of this camshaft, the use of 1.8 rockers is not recommended.

According to this, they suggest a higher stall and gear for the 236/230, but they both show a 2400-6800 RPM Powerband? This doesn't make sense to me.

Any info on these cams and how they would compare? Which one makes more power, and where, and which one drives smoother on the street?

Last edited by BlackHawk T/A; Dec 20, 2005 at 09:50 PM.
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Old Dec 21, 2005 | 12:12 AM
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And another thing...how can TSP claim 1600-6300 RPM Power Band for a similar duration cam (228)?

2300-6800 RPM with a Magic Stick V.3 237/242 .603/.609" ?? And they say it peaks around 6400 RPM...I don't see that happening with such long duration?

I'm starting to think I shouldn't trust any of these RPM range numbers.
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Old Dec 21, 2005 | 03:53 AM
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Originally Posted by BlackHawk T/A
So we have two splits here, one reverse and one standard. The specs are:

Thunder Racing Custom Camshaft - 236/230 .602/.575 112 LSA 2400-6800 RPM Power Band. Excellent mid-range & high RPM power. 3800+ stall, 4.10+ gear, computer tuning required. Due to the fast ramp rate of this camshaft, the use of 1.8 rockers is not recommended.

Thunder Racing Custom Camshaft - 230/236 .590/.598 112 LSA 2400-6800 RPM Power Band. Excellent mid-range & high RPM power. 3200+ stall, 3.42+ gear, computer tuning required. Due to the fast ramp rate of this camshaft, the use of 1.8 rockers is not recommended.

According to this, they suggest a higher stall and gear for the 236/230, but they both show a 2400-6800 RPM Powerband? This doesn't make sense to me.

Any info on these cams and how they would compare? Which one makes more power, and where, and which one drives smoother on the street?

From what I've researched and heard, the reverse split 236/230 is more top end oriented, and according to Geoff from Thunder, it wants to pull above 7K. I wouldn't go too heavily off of the listed powerbands...honestly, the 236/230 is probably more like 2800-7200 RPM power band, hence the bigger stall and gears. A lot of reverse split cams (strictly speaking @ .050") seem to peak a little higher than standard split cams with similar duration numbers.

I'd imagine the 230/236 to be a little lower in terms of powerband than TSP's 233/239. 2400-6800 sounds about right. As far as street driving, the 230/236 would be smooth, idle better, and be easier to tune. That said, I like reverse splits.
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Old Dec 21, 2005 | 03:56 AM
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Originally Posted by BlackHawk T/A
And another thing...how can TSP claim 1600-6300 RPM Power Band for a similar duration cam (228)?

2300-6800 RPM with a Magic Stick V.3 237/242 .603/.609" ?? And they say it peaks around 6400 RPM...I don't see that happening with such long duration?

I'm starting to think I shouldn't trust any of these RPM range numbers.
The TSP cam is a different animal. I believe it's ground on different lobes, and it is smaller, an even split, and probably a lot different @ .006". It's lower definitely, but I couldn't confirm if the power band listed is really that wide.

As far as the MS3, I think it makes it's power just a bit higher than that. I'd say probably 2700 or 2800-7000 or 7200. A 3500 stall is pushing it with that cam, so there's no way the power band is really that wide.
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